In the NEC, the normal philosophy for circuit protection is to shut down equipment before allowing the supply conductors to overheat. Article 695 departs from this philosophy. The fire pump motor must run no matter what. The pump supplies water to a facility’s fire protection piping, which supplies water to the sprinkler system and fire hoses. Article 695 contains many requirements to ensure an uninterrupted supply of water. Some of these requirements seem wrong at first glance, until ...
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