Ch. 4 Flashcards
1
Q
Large transformers are usually set on the ______? While smaller units may be mounted on wall brackets or suspended from the roof or floor above.
A
Floor
2
Q
Most modern dry transformers are designed for use inside __________ spaces ?
A
Sprinklered
3
Q
The electricity is used at _____ volts by HVAC equipment , refrigeration and other motors?
A
480 volts
4
Q
The electricity is used at ______ volts for light fixtures ballasts?
A
277 volts
5
Q
_________________ are located throughout the building to step down the voltage to 120volts for use in resources?
A
Dry transformers
