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Why does my 1500 watt heater consistently blow my 15 amp breaker fuse?
Wiki User
∙ 13y ago
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.
Wiki User
∙ 13y ago
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