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Old 07-15-2011, 09:29 PM   #16
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#12 internal wiring in a GE 4500w water heater


I didn't say that current doesn't always affects insulation temperature rating I said temp doesn't affect conductor current caring capacity. If you have two units both drawing the exact amount of current, one being a hot oven and the other a refrigerated unit that is at -30F the allowable gage of the wire would be the same but the insulation rating would be required to be different. If a lower rated insulation is used in the oven the current allowed would be dropped because of the amount of heat produced by the amperage which is a de-rating do to a faulty choice not the current carrying capacity of the conductor.


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