Residential Electrical

Formal Term For: Panel Cover

Dead Front

Watts

Def: Electrical power measurement Watts (W) = Volts (E) * Amps (I)

Amps (I)

Def: Flow Rate or Current Amps (I) = Volts (E) / Ohms (R)

Formal Term For: Sub-Panel

Distribution Panelboard Without a Service Disconnect

Formal Term For: Earth or Ground Wire

Equipment Grounding Conductor

Formal Term For: Service to Remote Panel

Feeder

Formal Term For: Neutral Wire

Grounded Conductor

Formal Term For: Ground Rod

Grounding Electrode

Formal Term For: Panel Earth Ground

Grounding Electrode Conductor

Formal Term For: Outlet

Lighting and/or Receptacle Outlet

Resistance (Ohms)

Limits the conductor's ability to allow the flow of electrons, just as friction causes losses in any pipe or duct work. This is expressed in Ohms.

_____ Is/are considered unsuitable to wear during an inspection.

Nylon or Polyester Clothing

Arc Clash

Occurs when a flashover of electric current leaves its intended path and travels through the air from one conductor to another, or to neutral or ground.

Volts (E)

Pressure Volts (E) = Amps (I) * Ohms (R)

Ohms (R)

Resistance Ohms (R) = Volts (I) / Amps (I)

Current (Amps)

The flow of electrons driven by electromotive force through a given resistance.

AWG (American Wire Guage)

Also known as Brown & Sharpe wire gauge, is a standardize wire gauge system used in the U.S. and Canada. "AWG" is referred to as a "gauge," and the zeroes in large wire sizes are referred to as "aught."

Formal Term For: Wires to Outlets

Branch Circuit Conductors

Formal Term For: Main (disconnect)

Service Disconnect

Formal Term For: Main Panel

Service or Distribution Electrical Panelboard with a Service Disconnect

Power (Watts or Kilowatts)

The amount of work that the electrical flow can do.

Formal Term For: Hot or Live Wire

Ungrounded Conductor

Electromotive Force (Volts or Voltage)

What drives electrons along a conductor.

kcmil

Wire size that is the equivalent cross-sectional area in thousands of circular mils. A circular mil is the are of a circle with a diameter of on-thousandth (0.001) of an inch. In North America, conductors larger that 4/0 AWG are typically identified by kcmil.