Journeyman Electrician’s Exam Journeyman Electrician's Emergency and Standby Systems 2

Question 1

Under NEC Article 701, Legally Required Standby Systems must restore power within how many seconds of normal power loss?

Accepted Answer

60 seconds

Answer

10 seconds

Answer

30 seconds

Answer

120 seconds

Question 2

Optional Standby Systems covered by NEC Article 702 are primarily intended to:

Accepted Answer

Protect private business interests and equipment

Answer

Protect life safety during power outages

Answer

Meet government-mandated safety requirements

Answer

Supplement legally required standby loads

Question 3

NEC Article 708 covers which specialized power system type?

Accepted Answer

Critical Operations Power Systems (COPS)

Answer

Emergency Systems

Answer

Legally Required Standby Systems

Answer

Optional Standby Systems

Question 4

Per NEC 700.12(B)(2), the minimum duration for monthly load testing of an emergency generator is:

Accepted Answer

30 minutes

Answer

15 minutes

Answer

60 minutes

Answer

90 minutes

Question 5

A separate utility service is permitted as an emergency power source under NEC 700.12(D) when:

Accepted Answer

The AHJ approves it and the conductors are adequately protected

Answer

The normal service exceeds 400 amperes

Answer

The building is classified as a high-rise occupancy

Answer

The utility provides a dedicated redundant feed

Question 6

NEC 700.3(D) requires periodic testing of emergency systems by a qualified person at intervals not exceeding:

Accepted Answer

30 days

Answer

7 days

Answer

90 days

Answer

6 months

Question 7

Which of the following is a load typically served by a Legally Required Standby System under NEC Article 701?

Accepted Answer

Ventilation systems in hazardous locations required by the AHJ

Answer

Exit and egress lighting

Answer

Residential backup power for household appliances

Answer

Optional UPS systems for office equipment