UFC 3 -520-01
June 10, 2002
EGSA 100S, Performance Standard for Transfer Switches for Use with Engine
requirements for transfer switches for emergency and standby transfer switches.
IEEE 446--discusses ATS applications.
NFPA 99--provides specific electrical requirements for medical facilities and
addresses transfer switch requirements in detail.
NFPA 111--establishes the NFPA requirements for A TS designs.
UL 1008--establishes ATS certification requirements and is a useful reference
source for ATS ratings.
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