Thiết bị & Bình nước nóngCâu 222 / 360
A water heater installed in an attic must be reached by a passageway and working platform. A typical minimum requirement is a solid, continuous passageway not less than:
a.30 inches wide with a level working platform at the appliance
b.12 inches wide
c.48 inches wide with stairs
d.6 inches wide
Giải thích
Attic-installed water heaters generally require a solid passageway at least 30 inches wide from the access opening to the appliance, plus a level working platform in front of the service side. A light and receptacle are also commonly required. These provisions let the unit be serviced safely.
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