Your toaster oven and coffeemaker each dissi-
pate 1200 W of power. You have a 114 V line
in your kitchen.
For what current must the circuit breaker
be rated for you to operate both of these
appliances at the same time?
Answer in units of A.
I'm doing online hw and I CAN'T mess up or else I lose points
pate 1200 W of power. You have a 114 V line
in your kitchen.
For what current must the circuit breaker
be rated for you to operate both of these
appliances at the same time?
Answer in units of A.
I'm doing online hw and I CAN'T mess up or else I lose points
-
Well,
total power dissipated = 2 * 1200 = 2400 W
line voltage = 114 V
Recall that
Power = Volts * amps
amps = Power / Volts = 2400 / 114 = 21 A
So the circuit breaker must be able to handle at least 21 A before it blows.
total power dissipated = 2 * 1200 = 2400 W
line voltage = 114 V
Recall that
Power = Volts * amps
amps = Power / Volts = 2400 / 114 = 21 A
So the circuit breaker must be able to handle at least 21 A before it blows.
-
2400 / 114 = 21.05A
The circuit would need a 30A breaker but the outlets for standard plugs are only rated for 15 or 20A. You would need two 20 A circuits.
The circuit would need a 30A breaker but the outlets for standard plugs are only rated for 15 or 20A. You would need two 20 A circuits.
-
I=P/E
= 2400/114
= ~ 21 amps
use a 25-30 A breaker
= 2400/114
= ~ 21 amps
use a 25-30 A breaker