EGSA EGSA Safety Standards and Code Compliance 1

Question 1

Which NFPA standard specifically governs the installation and performance of emergency and standby power systems including generator sets?

Accepted Answer

NFPA 110

Answer

NFPA 110, Standard for Emergency and Standby Power Systems, covers the installation, testing, maintenance, and performance of generator-based emergency power systems.

Question 2

Under NFPA 110, what is the maximum allowable transfer time for a Level 1 emergency power supply system (EPSS) to restore power after a utility failure?

Accepted Answer

10 seconds

Answer

NFPA 110 Level 1 systems must restore power within 10 seconds of loss of normal power to protect life safety loads.

Question 3

What NEC article governs the wiring requirements for emergency systems, including circuits supplied by on-site generators?

Accepted Answer

Article 700

Answer

NEC Article 700 covers the installation of emergency systems, including wiring, transfer equipment, and sources of power for life safety applications.

Question 4

Which OSHA standard addresses hazardous energy control (lockout/tagout) procedures that must be followed when servicing generator sets?

Accepted Answer

29 CFR 1910.147

Answer

OSHA 29 CFR 1910.147, The Control of Hazardous Energy (Lockout/Tagout), requires written procedures to isolate electrical, mechanical, and fuel energy before servicing generators.

Question 5

What does the EGSA classification 'Level 1' for a generator set signify?

Accepted Answer

Failure of the equipment to perform could result in loss of human life or serious injuries

Answer

EGSA and NFPA 110 define Level 1 as installations where failure of the equipment to perform could result in loss of human life or serious bodily harm, such as hospitals.

(EGSA) Electrical Generating Systems Association Certified Practice Test

(EGSA) Electrical Generating Systems Association Certified Practice Test

EGSA EGSA Safety Standards and Code Compliance 1