Forum Discussion
tatest
Apr 24, 2018Explorer II
If the A/C is the only major load and connections are good, there should be no problem. Your A/C is probably 10-12 amps running, and the higher starting loads are very short. The adapter will have no time to overheat. More often a problem will be long, too small, extension cords.
How long it can run on a 15 amp circuit depends on what else is on that circuit. The 15 amp circuit in my garage carries other loads (garage lighting, basement lighting, outdoor lighting, garage door opener) so I have to be careful about turning off everything else if I want to run the A/C while the RV is plugged in to the garage. A lot of garages these days have 20 amp utility circuits (as do kitchens) rather than 15 amp lighting circuits, so you may have more headroom than you think you do.
But I don't generally plug in at home to cool the RV. I do it for battery charging and precooling the fridge, so I'm usually drawing 5-8 amps for the RV, from a 15 amp adapter plugged into a 15 amp circuit.
How long it can run on a 15 amp circuit depends on what else is on that circuit. The 15 amp circuit in my garage carries other loads (garage lighting, basement lighting, outdoor lighting, garage door opener) so I have to be careful about turning off everything else if I want to run the A/C while the RV is plugged in to the garage. A lot of garages these days have 20 amp utility circuits (as do kitchens) rather than 15 amp lighting circuits, so you may have more headroom than you think you do.
But I don't generally plug in at home to cool the RV. I do it for battery charging and precooling the fridge, so I'm usually drawing 5-8 amps for the RV, from a 15 amp adapter plugged into a 15 amp circuit.
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