Code Q&A: Transfer Equipment Requirements

Code rules for Code transfer equipment of emergency systems

Q. What are the Code requirements for transfer equipment of emergency systems?

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A. As noted in Sec. 700.4 of the 2014 NEC, an emergency power system must have adequate capacity to carry all emergency loads expected to operate simultaneously. If an alternate power supply has adequate capacity, it’s permitted to supply emergency loads [Art. 700], legally required standby loads [Art. 701], and optional standby system lo

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