A 30 amp breaker wired with AWG #10 wire.
To calculate the amperage needed for 1500 watts at 120 volts, use the formula: Amps = Watts / Volts. In this case, it would be 1500 watts / 120 volts = 12.5 amps. Therefore, you would need a 15 amp breaker for this circuit to accommodate the power load safely.
I = W/E. 1500/240 = 6 amps for each heater. In parallel the total connected load will be 12 amps. A #14 conductor is rated at 15 amps and de rated to 80% can carry 12 amps continuous. The breaker needed for this would be a two pole 15 amp breaker. If this is a new installation I would use a #12 conductor for the two heaters on a two pole 20 amp breaker. The conductors will run much cooler using a larger size.
The circuit breaker for the headlights is intergrated with the headlight switch.
A 400 watt heater can safely be used on a 15 amp circuit. The size breaker needed for a circuit is determined by the size of the wiring in that circuit. AWG #14 wire requires a 15 amp breaker. AWG # 12 wire requires a 20 amp breaker.
To calculate the breaker size for a 1500-watt 120-volt heater, use the formula: Breaker size = Power (Watts) / Volts. In this case, 1500 watts / 120 volts = 12.5 amps. Therefore, you would need a 15-amp breaker for a 1500-watt 120-volt heater to allow for a safety margin.
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where is the power window circuit breaker located on a 1999 GMC Serria 1500
The circuit breaker is self resetting. you may have a short in the wiring.
Using the formula I = W/E, the current of the circuit will be 6.8 amps. As long as the wire is at least a #14 and is protected by a 15 amp two pole breaker There will be no problem. Just make sure that the specifications on the 1500 watt device clearly show that the voltage range is 220 - 240 volts. It certainly can, but it would depend on the fuse rating and existing load on the circuit.
A 15-amp breaker can handle a maximum load of 1800 watts (15 amps x 120 volts). However, it is recommended to only load a circuit up to 80% of its capacity, so in practice, you should only use up to 1440 watts on a 15-amp breaker.
At 120 Volts your heater is drawing about 12.5 Amps. If your house only had 120 V then it would draw 13.6 Amps. Problems could be 1.) Other devices on same circuit. 2.) Internal short in the heating element that reduced resistance and increased current. 3.) Faulty heater in that it really delivers more than 1500 watts because heating elements are less resistance than rating would require. 4.) Faulty breaker. These are in order of likelihood. You are close enough to the limit of the breaker that it could be any of these things. Typically you should not exceed 80% of the breaker rating and that is just where you are operating.
A circuit break will reset until it mechanically breaks down. What you should be looking at is why is the breaker tripping all the time. A breaker is a safety device that stop current from overloading the wire that it is protecting. When the breaker trips check and find out what other devices have stopped working. Total up the wattages. If the total is above 1500 watts then something is going to have to be disconnected on that circuit.