FREE E2 Emergency and Standby Systems Questions and Answers

Question 1

According to NEC Article 700, what is the maximum time permitted for an emergency system to automatically connect to its power source after an interruption of the normal supply?

Accepted Answer

10 seconds

Answer

60 seconds

Answer

30 seconds

Answer

2 minutes

Question 2

How must emergency circuit wiring be installed relative to other non-emergency wiring?

Accepted Answer

It must be kept entirely independent of all other wiring and equipment.

Answer

It can be in the same raceway if separated by a partition.

Answer

It can be in the same junction box as long as the conductors are from the same system.

Answer

It only needs to be separated from communications wiring.

Question 3

What is the maximum time permitted for a Legally Required Standby System to be automatically connected to its power source after a normal power failure?

Accepted Answer

60 seconds

Answer

10 seconds

Answer

30 seconds

Answer

5 minutes

Question 4

Which of the following is NOT a permissible source of power for an emergency system as described in NEC 700.12?

Accepted Answer

A tap ahead of the service disconnecting means

Answer

Storage batteries

Answer

A generator set

Answer

A separate utility service

Question 5

The primary purpose of an Optional Standby System (NEC Article 702) is to:

Accepted Answer

Protect a facility from economic loss or provide convenience during a power outage.

Answer

Power life safety systems such as fire alarms and egress lighting.

Answer

Provide power to systems that are required by a governmental agency for public safety.

Answer

Ensure the orderly shutdown of hazardous industrial processes.

Question 6

An emergency system must have adequate capacity and rating to:

Accepted Answer

Supply all loads that are to be operated simultaneously on the system.

Answer

Supply all loads in the building.

Answer

Supply 125% of the largest single emergency load.

Answer

Supply only the fire alarm and egress lighting.