Chapter 6

Metal underground water piping with at least ___' of piping in direct contact with the earth shall be part of the GES.

10

The minimum burial depth required for plate electrodes is ___ ' below the surface of the earth.

30

The minimum diameter is ___" for stainless steel rods and copper - or zinc coated steel rods.

5/8"

AC systems of less than ___ V to ground shall be grounded when installed as overhead conductors.

50

The minimum length of a rod or pipe electrode is ___'

8

A damp location is a(n) ___. A partially protected area B. area subject to some moisture C. all of the above

C

A wet location is a(n) ___. A. installation in concrete slabs contacting earth B. underground instalation C. locations saturated with water or other liquids. D all of the above

D

Electrical service equipment which shall be bonded together includes ___. A. service raceway with GEC B. service conductor enclosures C. metallic raceways protecting the metallic sheath

D all of the above

Aluminum electrodes may be used as grounding electrodes.

False

The grounded conductor shall never be smaller than 10 1/2 % of the largest service entrance conductor.

False

The only choice for the grounding electrode of a separately derived system is the grounded building steel.

False

A(n) ___ is an electrical conductor that provides a ground fault current path.

Grounding electrode

The minimum size of the EGC is based upon the rating of the ___ ahead of the supplied equipment.

OCPD

___ wiring is basically all interior and exterior wiring installed on the load side of the service point or the source of a separately derived system.

Premise

Electrical systems are grounded to limit and stabilize voltages to ground.

True

In general, the EGC may be bare, covered, or insulated conductor.

True

The amount of current that flows in any circuit is determined by the voltage and resistance of the circuit.

True

The ___ connects the EGC and the grounded conductor at the service or separately derived system to the grounded electrode.

grounded electrode conductor

The ___ is the connection between the grounded circuit conductor and the EGC at the service.

main bonding jumper

The ___ conductors extend from the service point to the service disconnecting means.

Service