3 ms·
A company may want an outdoor outlet and for some reason, end up putting it on the same circuit that powers the door locks. The building has backup power so the
by wildzzz 4y ago
A company may want an outdoor outlet and for some reason, end up putting it on the same circuit that powers the door locks. The building has backup power so there's no risk of the door becoming unlocked if the whole building goes down but what if that single circuit goes down (like from a wire jammed in the outdoor outlet)? The doors would lose power and the UPS wouldn't kick in so now the doors are all unlocked.