Single Electrical
Posted March 29, 2011
By admin
Physics help? Max # of heaters safely plugged into a single outlet and turned on for extended period of time?
The insulated wiring in a house can safely carry a maximum current of 18 A. The electrical outlets in the house provide an alternating voltage of 120 V. A space heater when plugged into the outlet operates at an average power of 1500 W. How many space heaters can safely be plugged into a single electrical outlet and turned on for an extended period of time?
a) zero
b) one
c) two
d) three
e) four
1500 watts / 120 volts = 12.5 amps
so only one can be plugged in.
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