NCCER Ch 9 Review

Front

True or False? All current-carrying conductors (including the grounded conductor) must be insulated when used on the inside of buildings.

Back

True

Front

What is a manually operated device used to pull a wire through conduit?

Back

Fish tape

Front

What is the maximum size solid wire that should be terminated in pull boxes and disconnects?

Back

No. 10

Front

Which wire size represents the largest: 50, 10, 5, or 4/0?

Back

4/0

Front

Where must Type SE cable be installed as specified when used as a service-entrance cable?

Back

NEC Section 402.3

Front

What does NEC stand for in electrical installations?

Back

National Electrical Code

Front

What is the purpose of a pull box in electrical installations?

Back

To provide a means to pull wires and make splices in a conduit system.

Front

What is the significance of grounding conductors in electrical systems?

Back

To provide a safe path for fault current and prevent electrical shock.

Front

What is the difference between solid wire and stranded wire?

Back

Solid wire consists of a single conductor, while stranded wire is made up of multiple smaller wires twisted together.

Front

What is the function of a disconnect switch in electrical systems?

Back

To provide a means to safely disconnect power from a circuit.