A Permit

Have a basic understanding of the Electrical Code and fundamental wiring skills. Some inspectors ask these questions informally, while others give a short written test. Inspectors may allow you to do some, but not all, of the work. For example, they may ask that all final circuit connections at the circuit breaker panel be made by a licensed electrician, while allowing you to do all other work. A few communities allow you to install wiring only when supervised by an electrician. This means you...

Back

A wall switch is connected to circuit wires with screw terminals or with push-in fittings on the back of the switch. A switch may have a stamped strip gauge that indicates how much insulation must be stripped from the circuit wires to make the connections. The switch body is attached to a metal mounting strap that allows it to be mounted in an electrical box. Several rating stamps are found on the strap and on the back of the switch. The abbreviation UL or UND. LAB. INC. LIST means that the...

Contents

Introduction 5 Wall Switches Understanding Electricity Electricity & Safety Your Electrical System Parts of the Electrical System. Understanding Circuits Grounding & Polarization Tools for Electrical Repairs. Wires & Cables Service Panels Fuses & Circuit Breakers Mapping Circuits & Indexing the Service Panel Evaluating Circuits for Safe Capacity Electrical Boxes Installing an Electrical Box Replacing an Electrical Box

H

Electrical requirements. 143 Hand-held tester, troubleshooting, 292-293 Heating, evaluating electrical loads. 150 planning circuit, 147 see also Baseboard heater, Blower heater, Furnace High-resistance short circuit. 129,134 testing lor, 135-137 High-voltage receptacle, 66. 68 Home automation, 294-295 interface modules, 275 Home network systems, 272-293 accessories, 272, 277 assessing needs, 278 audio system, installing, 286 cables and wires. 276, 284-285 determining locations, 279 distribution...

Nir

Wall Plug Plastic Concrete Anchors Green

Connect black wires to black lead from fixture 2 Remove access cover on fixture Open one knockout for each cable that enters fixture box. and install cable clamps 5 Connect black pigtail and circuit wire to black lead from fixture Connect white pigtail and circuit wire to white lead from fixture. Attach green pigtail and copper circuit wire to green grounding wire attached to the fixture box IMake connections before installing wallboard the work must be inspected first, and access to the...

Info

In a typical incandescent light fixture, a black hot wire is connected to a brass screw terminal on the socket. Power flows to a small tab at the bottom of the metal socket and through a metal filament inside the bulb. The power heats the filament and causes it to glow The current then flows through the threaded portion of the socket and through the white neutral wire back to the main service panel. Incandescent light fixtures are attached permanently to ceilings or walls. They include...

Installing a Home Network System

With the increasing need for networking capabilities in the home for work and entertainment, standards have been developed by the Telecommunications Industry Association (TIA) and the Electronic Industry Alliance (EIA) in accordance with the Federal Communications Commission (FCC). These standards are becoming the code requirements for home network wiring installation across the country. Make sure to check with your local building inspector for the current codes in this new and changing area of...

Jack

2 The backside of most RJ45 jacks are color-coded in the T568A wiring standard, so the proper colored wire from the UTP cable can be easily terminated to the proper terminal of the jack. Video cameras also have plug-and-play, self-terminating F-connector connections. Consult the manufacturer's installation guide for setup and playback of your particular camera. All coaxial video cables have plug-and-play connectors. The F-connector cable end is simply screwed to the back of the self-terminating...

K

Kitchen wiring, 138,148, 226-243 codes. 145 remodeling project. 228-229 diagram view of sample kitchen remodeling project, 230-231 evaluating electrical loads. 148-151 installing boxes for, 234-235 planning circuits, 232-233 receptacle recommendations, 142, 228-233 switch recommendations. 175. 232 see also Fluorescent light fixtures, GFCI. Recessed light fixtures. Small-appliance circuits, specific appliances Knob and tube wiring, 20 Incandescent light fixture, 78-87 chandelier, 78-79, 86-87...

Planning a Wiring Project

Hooking Sub Panel

Careful planning of a wiring project ensures you will have plenty of power for present and future needs Whether you are adding circuits in a room addition, wiring a remodeled kitchen, or adding an outdoor circuit, consider all possible ways the space might be used, and plan for enough electrical service to meet peak needs. For example, when wiring a room addition, remember that the way a room is used can change. In a room used as a spare bedroom, a single 15-amp circuit provides plenty of...

R

Range circuit, 226-233 circuit map. 161 evaluating loads. 149 installing, 234, 240 planning circuit, 232-233 see also Cable Receptacle, 11,13-15 caps and covers. 9, 69 childproofing, 69 codes, 144 electrical boxes for, 36-37 inspecting. 132-133 older receptacles, 62. 64. 66-67 preparing for multimedia use. 280 recessed, 69 repairing and replacing, 72-77 split-circuit, 64-65. 154 surface-mounted, 67-68 switch-controlled, 64 switch receptacle, 49. 55 testing for power, grounding, and polarity....

S

Safety, 5. 8-9, 18, 36. 40 avoiding underground utility lines. 254 childproof receptacles. 9. 69 devices, 14-17,62, 74 evaluating circuits for safe capacity, 34-35 inspections, 122-133 preventing circuit overloads, 143,190 preventing fire hazards, 143, 152 preventing shock, 154.156, 226, 255. 264 shutting off power, 26-27 tips. 8-9 when working in circuit breaker, 178, 187, 190-192,196 Sconces, 271 Screw terminal, common screw terminal, 46, 53, 58 connecting to wires. 24, 126 traveler screw...

T

Task lights, see Fluorescent light fixture Telecommunication modules. 275 Telephone home system, 118-121 junction box, installing, 121 modular connector, replacing, 119 module, mounting and connecting, 291 troubleshooting problems. 119 Telephone outlet wiring, cable used to connect outlets, 176 installing telephone wiring outlet, 198-199, 203, 205-206, 216-217 wiring symbol, 153 Television jack, see. Cable television jack Terminating connectors, 288-289 Testing for power, hand-held tester,...

Tools Materials Techniques for Projects

Electric Energy Good Condutors

To complete the wiring projects shown in this book, you need a few specialty electrical tools (above), as well as a collection of basic tools (page opposite) As with any tool purchase, invest in good-quality products when you buy tools for electrical work. Keep your tools clean, and sharpen or replace any cutting tools that have dull edges The materials used for electrical wiring have changed dramatically m the last 20 years, making it much easier for homeowners to do their own electrical work...

Tzec6ft

Yard is drawn to scale, with the lengths of trenches and cable runs clearly labeled. Decorative light fixture is positioned to highlight the deck. Decorative fixtures should be used sparingly, to provide accent only to favorite features of your yard, such as flower beds, ornamental trees, or a patio. Outdoor receptacle is positioned on the deck post, where it is accessible yet unobtrusive. Another good location for a receptacle is between shrubs. diagram for your own project may differ greatly...

V

Amp ratings of receptacles must match the size of the circuit A common mistake is to use 20-amp receptacles (top) on 15-amp circuits a potential cause of dangerous circuit overloads A metal brace attached to framing members is required tor ceiling tans and large light fixtures that a re too heavy to be supported by an electrical box Label new circuits on an index attached to the circuit breaker panel List the rooms and appliances controlled by each circuit Make sure the area around the panel is...

1

Vanity light fixture, 198, 202, 218 Vert fan, 198, 205-206 determining proper size, 204, 208 installing, 172, 198, 208-211, 219, 234 wiring symbol, 153 Vent hood, 6 cabinet-mounted, 247 downdraft. 247 installation, 244-247 wall-mounted, 244-247 cameras, terminating. 289 coaxial, terminating. 289 distribution modules, 275 F-connectors, 272 Voltage, 10 measuring, 19 Voice, data, video (VDV) Information, 273 cable for, 278 distribution modules, 275 jacks for. 272 Voltage ratings, circuits. 26-27...

Wire Cable

House Plan 9665

Double Receptacle Circuit with GFCIs & Shared Neutral Wire Use this layout variation ot circuit map 10 to wire a double receptacle circuit when code requires that some o' the receptacles by GFCIs The GFCIs should be wired tor single-location protection isee circuii nap 2i Requnes three-wire and two-wire cables

Wire Cables Projects

Many types o* wire and cable are available at home centers but only a few are used in most home wiring proiects Check your local electrical code to learn which type of wire to use and choose wire large enough for the circuit ampacity (page opposite) Cables are identified by the wire gauge and number of insulated circuit wires they contain In aodition all cables have a grounding wire For example a cable labeled 12 2WG contains two insulated 12-gauge wires plus a grounding wire Use NM cable for...

With Ground

Recondition Battery Guide

Inexpensive aluminum wire was used in place of copper in many wiring systems installed during the late 1960s and early 1970s, when copper prices were high Aluminum wire is identified by its silver color by the AL stamp on the cable sheathing A vana-tion copper-clad aluminum wire has a thin coating of coppe- bonded to a solid aluminum core B the early 1970s all-aluminum wire was found to peso a safety hazard if connected to a switch or recep-iacle ith brass or copper screw terminals 8ecause jmi...

Receptacle Wiring

House Wiring White Wire

A 125-volt duplex receptacle can be wired to the electrical system in a number of ways. The most common are shown on these pages. Wiring configurations may vary slightly from these photographs, depending on the kind of receptacles used, the type of cable, or the technique of the electrician who installed the wiring. To make dependable repairs or replacements, use masking tape and label each wire according to its location on the terminals of the existing receptacle. Receptacles are wired as...

Gkl

Schlauchschelle Adapter

22-gauge tour-wire phone cable (or eight-wire cable, if required by your telephone company), flush-mount telephone outlet. Coaxial cable with F-connectors, signal splitter, cable television outlet with mounting brackets Circuit 5 A 20-amp. 240-volt circuit that supplies power to three baseboard heaters controlled by a wall thermostat, and to a bathroom blower-heater controlled by a built-in thermostat Includes 12 2 NM cable. 750-watt blower-heater. single-gang box. line-voltage thermostat,...

Learn about Codes

2x2 Metal Furring Strips

To ensure public safety, your community requires that you get a permit to install new wiring and have the completed work reviewed by an appointed inspector. Electrical inspectors use the National Electrical Code (NEC) as the primary authority for evaluating wiring, but they also follow the local Building Code and Electrical Code standards. As you begin planning new circuits, call or visit your local electrical inspector and discuss the project with him. The inspector can tell you which of the...

Kilowatts 240 Volts

Small Permanent Outside Air Conditioner

Add 1500 watts for each small appliance circuit required by the local Electrical Code. In most communities, three such circuits are required two in the kitchen and one for the laundry for a total of 4500 watts. No further calculations are needed for appliances that plug into small-appliance or basic lighting receptacle circuits. Find wattage ratings for permanent appliances by reading the manufacturer's nameplate. If the nameplate gives the rating in kilowatts, find the watts by multiplying...

Repairing Replacing Receptacles

Replacing Old Receptacles

After shutting off power to the receptacle circuit, remove the coverplate and inspect the receptacle for any obvious problems such as a loose or broken connection, or wire ends that are dirty or oxidized. Remember that a problem at one receptacle may affect other receptacles in the same circuit If the cause of a faulty receptacle is not readily apparent, test other receptacles in the circuit for power (page 70). When replacing a receptacle, check the amperage...

Kitchen

Kitchen Wiring Ontario Amp

Ceiling fixture (circuit 7) provides general lighting for the entire kitchen. It is controlled by two three-way switches located by the doors to the room See page 242 (circuit 5) is controlled by a switch near the sink and supplies power to the disposer located in the sink cabinet. See page 241 The kitchen is the greatest power user in your home. Adding new circuits during a kitchen remodeling project will make your kitchen better serve your needs. This section shows how to install new...

Inspectors Notebook

Electrical Exposed Wires Protruding

An electrical inspector visiting your home might identify a number of situations that are not up to code. These situations may not be immediate problems. In fact, it is possible that the wiring in your home has remained trouble-free for many years. Nevertheless, any wiring or device that is not up to code carries the potential for problems, often at risk to your home and your family. In addition, you may have trouble selling your home if it is not wired according to accepted methods. Most local...

Fixing Replacing Doorbells

How Twist Door Bells Work

Most doorbell problems are caused by loose wire connections or worn-out switches. Reconnecting loose wires or replacing a switch requires only a few minutes. Doorbell problems also can occur if the chime unit becomes dirty or worn, or if the low-voltage transformer burns out. Both parts are easy to replace. Because doorbells operate at low voltage, the switches and the chime unit can be serviced without turning off power to the system. However, when replacing a transformer, always turn off the...

Testing Receptacles for Power Grounding Polarity

Grounded Receptacle With Ground Wire

Test for power to make sure that live voltage is not reaching the receptacle during a repair or replacement project. Test for grounding to plan receptacle replacements. The test for grounding will indicate how an existing receptacle is wired and whether a replacement receptacle should be a two-slot polarized receptacle, a grounded three-slot receptacle, or a GFCI If the test indicates that the hot and neutral wires are reversed (page 133), make sure the wires are installed correctly on the...

Small Eth Pigtail

Install cables for an under-cabinet light al he knockouts nstailed atter place) Cabi drilled holes .iO'tcnt to position the Choose the proper type of recessed light fixture for your proiect There are two types oi fixtures those rated tor installation vviihm insulation iiefn and those which must be kept at least 3 trom insulation (right) Self-contained thermal switches Shut oft power if the unit gets too hot tor its rating A recessed light fixture must be installed at least from comDustiDie...

Watertight Uf Connector Installation

Plastic Wall Anchors Brick

Consider the circuit length when choosing cable sizes for an outdoor circuit. In very long circuits, normal wire resistance leads to a substantial drop in voltage If your outdoor circuit extends more than 50 feet, use larger-gauge wire to reduce the voltage drop For example, a 15-amp circuit that extends more than 50 feet should be wired with 12-gauge wire instead of 14-gauge. A 20-amp circuit longer than 50 feet should be wired with 10-gauge cable. As you begin planning an outdoor circuit,...

Bus Bar For Building Wiring

Ground Bus Bar

Wiring a Water Heater with Flexible Conduit Install a 30-amp, 240-volt circuit for most electric water heaters A water heater circuit is wired in much the same way as an air conditioner circuit (circuit map 12. page 160). Install a junction box near the water heater then use 10 2 NM cable to bring power from the service panel to the unction box ieft) Use flexible metal conduit and 10-gauge THHN,THWN wires to bring power from the unction box to the water heater wire connection box trighti...

Lowvoltage Outdoor Lighting

Conduit House Wiring Materials

An alternative to 120-volt outdoor landscape lighting is to purchase and install a low-voltage outdoor wiring kit These kits have several advantages over 120-volt lighting systems. They are safe and easy to install, use less energy, and don't require complicated hazard precautions. You can buy kits with low-profile fixtures to illuminate your deck, tier or globe lights for landscaping or lining paths, or flood-lamps to illuminate a larger area. Inexpensive kits, which are self-contained but...

Installing Electrical Boxes

Elctric Boxes Adjustable For Thickness

Install electrical boxes for receptacles. switches, and fixtures only after your wiring project plan has been approved by your inspector Use your wiring plan as a guide, and follow electrical code height and spacing guidelines when laying out box positions Always use the deepest electrical boxes that are practical for your installation. Using deep boxes ensures that you will meet code regulations regarding box volume and makes it easier to make the wire connections. Some electrical fixtures,...

Home Telephone System

Telecommunication System Wiring

Although the telephone company owns the wires that bring telephone service to the house, repair and new installation can take place in any part of the telephone system that extends past the company's demarcation jack. The demarcation jack is usually located in a basement or utility area, although it may also be mounted on a baseboard in a home's living quarters. Because the voltage running through telephone wires is very low, there is little danger of shock when working on the wiring. Still, it...

Wg Wo Wbl

How Install Speakers House

How to Attach F-connectors to Coaxial Cable A home audio system routes speaker wire from a central receiver or amplifier, through the network distribution center, and back through to any room in the house. Each room can then be outfitted with either binding posts for an external speaker system or a recessed speaker system that is wired directly. A volume control knob can be installed, typically at or near a light switch, to control the input level to the speakers in rooms wired to an external...

Home Wiring Info

Ceiling Grid Main Splice Connector

'Do not count pigtail wires or grounding wires 'Do not count pigtail wires or grounding wires igie-s ze -ectanguia' snown aocve) ma> nave aes 'a a lew tner-together form -5 ze ccxes enough -or Tios ng apCH ions The> are jsec 'c caci splices a a ganaec -eceotac or switches Tc nsta o e s.v or receo acie m a sajare oc* an adaote- -er a a toam gaskets to guard or receptacle against Corrosion-resistant coat-cotec1 an metal parts Retrofit boxes upgrade older boxes to larger sizes One type (above)...

Wiring a Room Addition

Wiring Bed Room

This chapter shows how to wire an unfinished attic space that is being converted to a combination bedroom, bathroom, and study. In addition to basic receptacles and light fixtures, you will learn how to install a ceiling fan, permanently wired smoke alarm, bathroom vent fan, computer receptacle, air-conditioning receptacle, electric heaters, telephone outlets, and cable television jacks. Use this chapter and the circuit maps on pages 155 to 167 as a guide for plan- (circuit 2) is connected to a...

Oeckeb

Neon circuit tester is used to check circuit wires for power. Testing for power is an essential safety step in any electrical repair project (page 70). essential for home wiring projects. It cuts cables and individual wires, measures wire gauges, and strips the insulation from wires. It has insulated handles. Cordless screwdriver drives a wide variety of screws and fasteners. It is rechargeable and can be used in either a power or manual mode. A removable tip allows the cordless screwdriver to...

Fixing Replacing Thermostats

Wire Thermostat Wire Low Voltage

A thermostat Is a temperature-sensitive switch that automatically controls home heating and air-conditioning systems. There are two types of thermostats used to control heating and air-conditioning systems. Low-voltage thermostats control whole-house heating and air conditioning from one central location. Line-voltage thermostats are used in zone heating systems, where each room has its own heating unit and thermostat. A low-voltage thermostat is powered by a transformer that reduces 120-volt...

Installing Track Lighting

Track Lighting Tracks Installation

Track lighting allows you to create custom indoor lighting at a small cost. Use it to highlight a wall, illuminate a sculpture, or brighten a dark corner the possibilities and effects are limitless. You can purchase track lighting kits at most home improvement retail outlets. They come in a variety of styles, which allows you to mix and match components to suit your needs. Installation is easy. All you need are a few household tools. While not necessary, it is helpful to have a second person to...

Replacing a Plug

Not Touch The Wires Sockets

Replace an electrical plug whenever you notice bent or loose prongs, a cracked or damaged casing, or a missing insulating faceplate A damaged plug poses a shock and fire hazard Replacement plugs are available in different styles to match common appliance cords. Always choose a replacement that is similar to the original plug. Flat-cord and quick-connect plugs are used with light-duty appliances, like lamps and radios. Round-cord plugs are used with larger appliances, including those that have...

Installing Outdoor Wiring

Outdoor Wiring

Adding an outdoor circuit improves the value of your property and lets you enioy your yard more fully Doing the work yourself is also a good way to save money. Most outdoor wiring projects require digging underground trenches, and an electrician may charge several hundred dollars for this simple but time-consuming work. Do not install your own wiring for a hot tub, fountain, or swimming pool. These outdoor water fixtures require special grounding techniques that are best left to an electrician...

Electrical Boxes Projects

Thru Box Clamp For Ground Wire

Use the chart below to select the proper type of box for your wiring project For most indoor wiring done with NM cable, use plastic electrical boxes Plastic boxes are inexpensive, lightweight, and easy to install. Metal boxes also can be used for indoor NM cable installations and are still favored by some electricians, especially for supporting heavy ceiling light fixtures If you have a choice of box depths, always choose the deepest size available Wire connections are easier to make if boxes...

Remodeled Kitchen

Dedicated Amp Receptacle

The kitchen remodeling viring proiect shown on the toll wing pages includes the installation of seven new circuits Four of these are dedicated ci its a 50-amp circuit Suppi mg the range a 20-amp ci cower inc the microwave an l5 -amp circuits supplying tr-dishwasher and food osoost In addition two 20-amp circuits for small appliances supply power to an receptacles above the countertops anc n tne eating area Finally a 15-a p basic lighting c cc- roi the ceiling fixture ' tne recessed fixtures a1...

Repairing Replacing Fluorescent Lights

Wiring Fluorescent Lights Series

Fluorescent lights are relatively trouble-free and use less energy than incandescent lights. A typical fluorescent tube lasts about three years and produces two to four times as much light per watt as a standard incandescent light bulb. The most frequent problem with a fluorescent light fixture is a worn-out tube. If a fluorescent light fixture begins to flicker, or does not light fully, remove and examine the tube. If the tube has bent or broken pins, or black discoloration near the ends,...

Draw a Wiring Diagram

Drawing a wiring diagram is the last step in planning a circuit installation. A detailed wiring diagram helps you get a work permit, makes it easy to create a list of materials, and serves as a guide for laying out circuits and installing cables and fixtures. Use the circuit maps on pages 155 to 167 as a guide for planning wiring configurations and cable runs. Bring the diagram and materials list when you visit electrical inspectors to apply for a work permit. Never install new wiring without...

Basic Types of Receptacles

Several different types of receptacles are found in the typical home. Each has a unique arrangement of slots that accepts only a certain kind of plug, and each is designed for a specific job. Household receptacles provide two types of voltage normal and high voltage Although voltage ratings have changed slightly over the years, normal receptacles should be rated for 110, 115, 120, or 125 volts. For purposes of replacement. these ratings are considered identical. High-voltage receptacles are...

Circuit Maps for 26 Common Wiring Layouts

Single Swith Multiple Light Fixtures

The arrangement of switches and appliances along an electrical circuit differs for every project. This means that the configuration of wires inside an electrical box can vary greatly, even when fixtures are identical. The circuit maps on the following pages show the most common wiring variations for typical electrical devices. Most new wiring you install will match one or more of the examples shown. By finding the examples that match your situation, you can use these maps to plan circuit...

Evaluating Old Wiring

If the wiring in your home is more than 30 years old. it may have a number of age-related problems. Many problems associated with older wiring can be found by inspecting electrical boxes for dirty wire connections page 72 , signs of arcing page 132 . cracked or damaged wire insulation page 127 , or dirt buildup page 129 . However, it is difficult to identify problems with wiring that is hidden inside the walls. If old wires are dusty and have damaged insulation, they can leak electrical...

Distribution Modules

Distribution Box 120 Volts

The distribution modules are the interface devices used to maintain and strengthen the signal for further routing throughout the system Each module contains at least one INPUT port for receiving the incoming signal to be distributed or redistributed , and a series of OUTPUT ports for routing the desired signal to the desired locations Each module is designed to serve a particular function Video distribution modules receive and distribute cable, satellite. UHF VHF and other coaxial signals...

Distribution Center

The distribution center is the central hub of the network wiring system, housing the distribution modules and the cable and wire connections that link the entire network. All service cables from outside your home antenna, cable TV. telecommunication lines, etc. are routed from the service entrance to the distribution center, where their signals are then distributed to every room in your house. In addition, signals generated within your home such as DVD, VCR, audio, or computer networks can be...

Common Electrical Code Requirements

Common Electrical Code Requirements

Maintain a minimum 30' x 36 of clearance in front of the service panel. Ground all 120-volt and 240-volt circuits. Match the amperage rating of the circuit when replacing fuses. Locate service panels and subpanels a maximum of 79 above floor level. Use handle-tie breakers for 240-volt loads line to line . Close all unused service panel openings. Label each fuse and breaker clearly on the panel. Use boxes that are large enough to accommodate the number of wires entering the box. Locate all...

Home Network Wiring Systems

The ability to send and receive information electronically has become an important part of our lives Internet access, multiple phone lines, cable television, satellites, home computer networks, and security systems are commonplace in many homes. And as our telecommunications needs grow, a better, faster, and more convenient way to manage these separate systems will be necessary. A home network system brings all these single systems together at one central location. It provides a transmission...

Wiring Of Building Or Homes Introduction

In everything from food preparation to climate control, from entertainment to work, electricity plays a critical role in our lives. Knowing about your electrical system and how it works will allow you to make sensible, effective, and economical decisions for your home's functionality, convenience, and safety. This newly updated and revised edition of the top-selling The Complete Guide to Home Wiring is a comprehensive tour through the sometimes intimidating subject of electricity. With...

Emt Compression Fitting Pull Apart Strength

Pull Green Wire Emt

1920 watts 120 volts 3840 watts 240 volts 2880 watts 120 volts 5760 watts 240 volts Wire ampacity is a measu'eme'' sa'eK Ampacity vanes accor Vhen installing a new circuit i. the circuit size For dea ting of the appliance an . attage loao of the ci'cui Use plastic cable staples to anchor cables to the sides of framing mem-Crocse staples sized to match the cables they anchor Stack-it -facnmg up to four 2-wire cables to the side of a framing ies B for 12.2 12 3 and all 10-gauge cables staples 3...

What Wire To Use For 30 Amp Air Condition

Air Conditioner Grounded Plug

Polarized two-slot receptacle is common in homes built before i960 Slots are different sizes to accept polarized plugs 15 amps, 125 volts. Three-slot grounded receptacle has two different size slots and a U-shaped hole for grounding. It is required in all new wiring installations. 20 amps, 125 volts. This three-slot grounded receptacle features a special T-shaped slot. It is installed for use with large appliances or portable tools that require 20 amps of current 15 amps,...

A

Circuit installation. 198, 200,202-204, 220 circuit map. 160 evaluating electrical loads, 148-151 planning circuits, 147 AL-CU wire rating. 22, 44. 63 Aluminum wire, 21-22, 24 cleaning, 57, 72 identifying. 22 receptacle for. 63 switches lor. 44 American Wire Gauge AWG system, 21 Ampacity. 176 circuit breaker amperage, 192 wire gauge wattage load, 177 Amperage rating, main service rating, 138, 140,191 of appliances. 34-35 of circuits, 26-28, 32. 143 of receptacles. 63, 66 of switches. 44...

Which Wire Is Hot - Black Or White

Wiring Black And Silver Screws

Is attached to a black hot wire, a red hot wire, a white neutral wire, and a bare grounding wire The wiring is similar to a switch-controlled receptacle The hot wires are attached to the brass screw terminals. and the connecting tab or tin between the brass terminals is removed. The white wire is attached to a silver screw terminal, and the connecting tab on the neutral side remains intact The grounding wire is pig-tailed to the grounding screw terminal of the receptacle and to the grounding...

I

Home Wiring Central

6 Connect the low-voltage wires to the tr and reattach the electrical box cover I on the power at the mam service panel ITurn off power to the heating unit at the main ser- Q Loosen the thermostat mounting screws, and care-vice panel Remove the thermostat coverplate. fully pull the thermostat from the electrical box. 4 Identify the two circuit wires that are attached to the thermostat leads marked LINE. The circuit wires attached to the LINE leads bring power into the box and are known as feed...

W

Wall-mounted light fixture, 78-79 wiring symbol. 153 see also Vanity light fixture Wall switch, 42-61. 78-79 automatic. 51. 55 codes, 144 common problems. 42-43, 56.133 diagram, 42 dimmer. 60-61 double switch. 48. 55 electrical boxes for, 36-37 electronic. 42, 50-51. 55 fixing and replacing, 56-59 four-way, 44. 47. 53. 59 inspecting, 133 mercury. 43 motion-sensor, 43, 51. 55 programmable. 51. 55 push-button. 42 rotary snap switch. 42 single-pole, 44-45,49. 52.56-57, 60-61 switch-controlled...

4 Way Switch Wiring

Way Switch Terminals

Four-wa switches have four screw terminals and do not have ON-OFF markings Four-way svutches are always installed between a pair of three-way switches This switch combination makes it possible to control a set of lights from three or more locations Four-way switches are common in homes where large rooms contain multiple living areas, such as a kitchen opening into a dining room Switch problems in a four-way installation can be caused by loose connections or worn parts m a four-way switch or in...

How 120 Volt Wiring Works

Red Black And Green Wires Into Breaker

Test for current before touching any parts inside a circuit breaker panel With main breaker turned OFF but all other breakers turned ON. touch one probe of a neon tester to the neutral bus bar and touch other probe to each setscrew on one of the double-pole breakers not the main breaker If tester does not light for either setscrew it is safe to work in the panel. The last step in a wiring project is connecting circuits at the breaker panel After this is done, the work is ready for the final...

G

GFCI ground-fault circuit-interrupter , 9, 11,28,62,74, 154 circuit maps, 155-156 code requirements, 142,145 installing, 75-77,219, 239 kitchen wiring, 226-232 laundry circuit, 188 outdoor circuits, 249, 251, 253, 255, 266 room addition bathroom. 198-202 testing. 29 wiring diagram, 74 wiring symbol. 153 Glossary of terms. 7.154 Gray wire, see Neutral wire Green wire, see Grounding wire Greenfield cable, see Armored cable Grounded receptacle. 13,17. 63-66. 70-71 Grounded switch, 44 Grounded...

How To Install Electrical Conduit

Conduit Installation

EMT lightweight and easv to install ut should not oe used r-er can oe damaged IMC eke- galvanized walls an coa choice 'or e poseo out-jse Rigid metai conduit pr ides the greatest protection tor ou gt is more expensive an . res 'hreaded 'i'tmqs Plastic PVC conduit s allowed o. manv oca' codes it 'S assen-pieo .ut solvent ue ano PVC'1 mat'esemoi en How to Install Metal Conduit amp THHN THWN Wire on Masonry Walls 1 Measure from floor to position electrical boxes on wall, and mark location for...

E

Electric door opener, wiring symbol. 153 Electric heater, sea Baseboard heater. Blower-heater Electric meter, 10-12,134 Electrical box, 13,170-171 and light fixture, 36.129 braced box tor ceiling tan, 207 cleaning, 129 code requirements for, 36,128,144 for conduit wiring, 184-185 for kitchen wiring, 234-235 for outdoor wiring, 258-261 for room addition wiring, 206-207 inspecting, 128-129, 134,147 installing, 38-39,172-173 replacing, 40-41 types, 36-37 Electrical code chart, 144-145 Electrical...