Equipment & SystemsQuestion 325 of 521
What capacity must an emergency system power source have?
a.Adequate capacity to carry all emergency loads simultaneously
b.50% of the connected emergency load
c.Only the largest single load
d.No minimum capacity is specified
Explanation
Section 700.4 requires the emergency source to have adequate capacity and rating to supply all loads that will operate simultaneously. Sizing for only a fraction of the load or the largest single load would leave emergency loads unsupplied during an outage.
Law Reference: 2023 NEC §700.4Practice all 521 questions free — no signup required.
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