Quote:
Originally Posted by MBAtarga
The issue is if an electronic device with a 15A plug has an internal failure (short) and draws MORE than 15A. The purpose of the breaker is to trip, and a 20A breaker won't trip until it senses 20A of current. So the 15A outlet, or the 14AWG wire (normal use on a 15A circuit) fails and causes overheating which leads to a fire.
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This is true in theory only. Some federal breakers will need up to three times the rated amperage or more before they throw the circuit. Like in many things , you get what you pay for. Square D or siemens and sleep well at night. Dan.