Emergency Electrical Power Supply for Buildings

This Standard applies to the design, installation, operation, maintenance, and testing of emergency generators and associated equipment for providing an emergency electrical power supply to electrical loads

a) in buildings and facilities when the normal power supply fails and an emergency electrical power supply is required by the National Building Code of Canada (NBCC); and

b) of essential electrical systems, where emergency generators are intended for use in health care facilities (HCFs) in accordance with Clause 6 of CSA Z32.

Notes:

a) For guidelines on emergency electrical power supply for life-support equipment, see Annex A.

b) In this Standard, the term “building” also includes facilities.

c) Normative provisions of this Standard are not limited to the installations where an emergency generator is used as the NBCC required emergency power supply source to the “life safety equipment”.

d) For guidelines on the use of emergency electrical power supply equipment for purposes beyond the provisions of Clause 1.1, see Annex D.

e) It is intended by the scope of this Standard that equipment other than “life safety equipment” could be connected to the emergency generator (see Clause 6.4.1).

f) For electrical power supply systems designed and installed to operate for purposes other than those specified in Clauses 1.1, the electrical power supply system should meet the requirements of this Standard, where practical, and in conjunction with the guidelines of Annex E of this Standard.

1.2

This Standard does not cover

a) any emergency electrical power supply provided from storage batteries or other sources of uninterrupted power supply (UPS); and

b) design and construction of unit equipment for emergency lighting that complies with CSA C22.2 No. 141.