NEC General Requirements and Definitions 3

Question 1

NEC Section 110.12 requires electrical equipment to be installed in a:

Accepted Answer

Neat and workmanlike manner

Answer

Section 110.12 mandates that electrical equipment be installed in a neat and workmanlike manner, ensuring reliable, safe operation.

Question 2

Under NEC Article 100, a 'dwelling unit' is defined as:

Accepted Answer

One or more rooms used as a housekeeping unit with space for eating, living, and sleeping plus permanent provisions for cooking and sanitation

Answer

Article 100 defines a dwelling unit as one or more rooms used as a housekeeping unit with space for eating, living, and sleeping along with permanent provisions for cooking and sanitation.

Question 3

What is the NEC definition of 'interrupting rating'?

Accepted Answer

The highest current at rated voltage that a device is identified to interrupt under standard test conditions

Answer

Interrupting rating is the highest current at rated voltage that a device is identified to interrupt safely under standard test conditions.

Question 4

According to NEC Table 110.26(A)(1), what is the minimum working space depth in front of electrical equipment operating at 0–150 V to ground under Condition 1?

Accepted Answer

36 inches (3 ft)

Answer

NEC Table 110.26(A)(1) requires a minimum working space depth of 900 mm (3 ft) for voltages of 0–150 V to ground under Condition 1.

Question 5

The NEC term 'overcurrent' includes which of the following conditions?

Accepted Answer

Overload, short circuit, and ground fault

Answer

Overcurrent is any current exceeding the rated ampacity of equipment or conductors, and includes overload, short-circuit, and ground-fault conditions.

NEC Practice Test

NEC Practice Test

NEC General Requirements and Definitions 3