CEI Emergency & Standby Systems 3

Question 1

NEC 700.3 requires emergency systems to be tested under load at what minimum frequency?

Accepted Answer

Monthly for 30 minutes

Answer

NEC 700.3(B) requires emergency systems to be tested under load conditions at least monthly for a minimum of 30 minutes.

Question 2

Which of the following loads is classified as an emergency system load under NEC Article 700?

Accepted Answer

Exit signs and egress lighting

Answer

Exit signs and egress lighting are classic life-safety loads assigned to the emergency system under NEC Article 700.

Question 3

What is the maximum allowable voltage drop on emergency system branch circuits under NEC 700.10?

Accepted Answer

No specific limit is stated

Answer

NEC Article 700 does not specify a maximum voltage drop for emergency circuits, though good practice and NFPA 110 recommend limiting drop to ensure reliable operation.

Question 4

An optional standby system is covered by which NEC article?

Accepted Answer

Article 702

Answer

NEC Article 702 covers optional standby systems, which protect private business operations but are not required by law for life safety.

Question 5

A sign reading 'EMERGENCY CIRCUIT' or similar must be posted at:

Accepted Answer

The emergency panelboard and all boxes containing emergency wiring

Answer

NEC 700.10(A) requires a permanent sign at each box, enclosure, or panelboard containing emergency wiring to identify it as an emergency circuit.

(CEI) Certified Electrical Inspector Practice Test

(CEI) Certified Electrical Inspector Practice Test

CEI Emergency & Standby Systems 3