Residential WiringResidential WiringConductors, Regulating Bodies, & DiagramsConductors, Regulating Bodies, & Diagrams

Residential WiringResidential Wiring

• A house must be wired properly to A house must be wired properly to prevent fires. Wires of correct size prevent fires. Wires of correct size must be used to make sure must be used to make sure consuming devices receive the consuming devices receive the correct amount of current.correct amount of current.

• The diameter of wire determines the The diameter of wire determines the amount of current that can safely amount of current that can safely flow through it.flow through it.

Wire SizeWire Size

• Wires are sized Wires are sized according to a according to a table known as the table known as the AAmerican merican WWire ire GGauge (AWG). The auge (AWG). The larger the number larger the number the smaller the the smaller the diameter of the diameter of the wire.wire.

Wire SizeWire Size

• #22 AWG wire: used #22 AWG wire: used for telephonefor telephone

• #18 AWG wire: used #18 AWG wire: used for door bell chimesfor door bell chimes

• #14 & #12 AWG wire: #14 & #12 AWG wire: used for lights, used for lights, switches, receptacles, switches, receptacles, base board heaters, base board heaters, hot water boilers.hot water boilers.

• #10 AWG wire: used #10 AWG wire: used for electric dryersfor electric dryers

• # 8 AWG wire: used # 8 AWG wire: used for electric rangefor electric range

• #2 AWG wire: used for #2 AWG wire: used for whole house ground whole house ground wirewire

• #000 or #0000 AWG #000 or #0000 AWG wire: used for service wire: used for service entrance and cables.entrance and cables.

Color CodeColor Code

• Hot Wire: is usually black or some Hot Wire: is usually black or some other color than white or green.other color than white or green.Neutral Wire: is white. It is grounded Neutral Wire: is white. It is grounded at the main switch and runs to each at the main switch and runs to each 120v outlet without interruption.120v outlet without interruption.

• Ground Wire: is green or bare copper.Ground Wire: is green or bare copper.

• Note: The color of the outer sheathing is of no Note: The color of the outer sheathing is of no significance, only the color of the inside insulation.significance, only the color of the inside insulation.

Color Code / 2-Wire CircuitsColor Code / 2-Wire Circuits

• Black & White wires: used for lights and Black & White wires: used for lights and receptacles indicates 110v A.C. presentreceptacles indicates 110v A.C. present

• Black & Red wires; used for electric Black & Red wires; used for electric heaters and hot water boilers. Indicates heaters and hot water boilers. Indicates 220v A.C. is present. 220v A.C. is present.

• Black and red wires may also be used Black and red wires may also be used between switch and lighting outlet.between switch and lighting outlet.

Color Code / 3-Wire CircuitsColor Code / 3-Wire Circuits

• Black, Red, & Black, Red, & White or Green: White or Green: Used for electric Used for electric dryers and ranges.dryers and ranges.

Schematics & SymbolsSchematics & Symbols

• Switch TypesSwitch Types Single PoleSingle Pole Double PoleDouble Pole Three WayThree Way Four WayFour Way Switch & Pilot LightSwitch & Pilot Light

Schematics & SymbolsSchematics & Symbols

• Receptacle / Receptacle / OutletsOutlets Single ReceptacleSingle Receptacle Duplex ReceptacleDuplex Receptacle Triplex ReceptacleTriplex Receptacle GFCIGFCI Range OutletRange Outlet

Electrical Components & Electrical Components & ToolsTools

Octagon or Junction Box

Wire Strippers/Crimpers

Wire Sheathing StrippersInsulated Electrical Screwdrivers

Electrical Components & Tools

Marrettes / Wire Nuts

Lineman Pliers

Needle Nose Pliers

Electrical Staple

Electrical Components & Tools

Receptacle /Switch Box

Lampholder/Rossette

Switch Plates

Receptacle Plate

Electrical Components & Electrical Components & ToolsTools

Residential WiringResidential WiringConductors, Regulating Bodies, & DiagramsConductors, Regulating Bodies, & Diagrams