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Basic Electricity Facts and Diagrams. Romex Types Determine your need to determine the type of Romex needed Gage Size of the wire (common = 12 or 14)

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Presentation on theme: "Basic Electricity Facts and Diagrams. Romex Types Determine your need to determine the type of Romex needed Gage Size of the wire (common = 12 or 14)"— Presentation transcript:

1 Basic Electricity Facts and Diagrams

2 Romex Types Determine your need to determine the type of Romex needed Gage Size of the wire (common = 12 or 14) 2 wire 1 black, 1 white, and 1 bare/green ground wires 3 wire 1 black, 1 red, 1 white, 1 bare/green ground wires

3 Wire Types There are 4 basic types of wire Black wire = hot White wire = neutral Bare/Green wire = ground Red = hot

4 Wire Types

5 Device Types Various devices are needing in wiring Light fixture Single-pole switches 3-way switch Duplex receptacles

6 Device Types

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9 Device Screws There is 3 basic types of screws Brass (gold) – hot (black) Silver – neutral (white) Green – ground (bare/green)

10 Device Screws

11 Connector Types Connecting caps are colored by size and use Red Yellow Green – primarily for ground

12 Connector Types

13 Wiring Rules Neutral wire goes without interruption to every place in the circuit where current may be used Neutral wire is connected to the silver-colored terminal. The neutral wire is white.

14 Wiring Rules Black or red wire is always connected to a brass- colored terminal. Black or red wires carry “hot” power or current from the source to the devices within the circuit

15 Wiring Rules The green, or bare, grounding wire is connected to the grounding terminal (green screw) of a grounding-type electrical fixture. All wires must be spliced or connected to a terminal screw in each box. Only one wire is allowed to be fastened under a terminal screw.

16 A single-pole switch to a light fixture

17 Duplex Receptacle with continuous Circuit

18 A single pole switch to two light fixtures

19 A single-pole switch controlling a light fixture with a line coming in and a line extending beyond the fixture.

20 Two 3-way switches controlling a light fixture with the power coming in through the first switch.


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