To avoid cutting extra holes in the roof, power is normally provided to curb-mounted rooftop units:
A) Wirelessly using Wireless Power Connectors (WPC).
B) Directly from the power company's utility pole.
C) Through the same conduit as the low-voltage control wiring.
D) From underneath through the curb.
Question 2
Water and air leakage between the rooftop unit and the rooftop curb are prevented by:
A) UL-rated duct tape applied from the inside of the curb.
B) UL-rated duct tape applied over the outside of the curb.
C) UL-rated duct tape applied to both the inside and outside of the curb.
D) Gasket material between the curb and the unit.
A comparison of the sizes of various chemical and biological structures, and the resolving power of
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