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Old 06-30-2016, 09:40 PM   #31
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A total length of 50 feet is all you can do for 30 amps on a #10 wire at 120 volts. Get the free app from Southwire and that will help answer a lot of questions the next time you think it's your cords. southwire voltage drop calculator
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Old 07-06-2016, 01:18 AM   #32
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Have run that calculator and with 100' of wire, the voltage drop is about 5%. It's not the voltage from what I can tell, it's that the amps go up to compensate to achieve the needed wattage. The voltage was not tripping the breakers, the amps were. Comments/feedback?

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Old 07-06-2016, 04:41 AM   #33
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Quote:
Originally Posted by MNtraveler View Post
Have run that calculator and with 100' of wire, the voltage drop is about 5%. It's not the voltage from what I can tell, it's that the amps go up to compensate to achieve the needed wattage. The voltage was not tripping the breakers, the amps were. Comments/feedback?

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You are 100% correct; low voltage caused high amp draw in inductive loads. There is also a thermal circuit breaker in the compressor motor that will shut down the compressor (but not the fan) when the excessive amps causes the compressor to overheat. The result is poor cooling as the compressor only runs intermittently as it overheats; shuts down; cools off; and restarts.

This can happen with or without breaker issues depending on the tenacity of the breakers and the sensitivity of the thermal overload switch in the compressor.

This can happen
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Old 07-07-2016, 08:10 PM   #34
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Thanks!


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