A/C work on 15 amp circuit?
Afternoon all! I have a 13,500 A/C unit in my trailer. The trailer power is 30amp. Is it safe to run my trailers A/C on the 115V 15amp supply at the trailer storage place? I don't want to run it for l...
Forum Discussion
jaredcb03 wrote:kellertx5er wrote:
The most honest answer is "maybe". As stated above, a 15A circuit will have #14 wire, which can carry the load. The question is how far is your receptacle from the breaker/panel? It could be 20 feet or 75 feet. Your biggest enemy is voltage drop.
The only way to be sure is to plug in and run it. Measure the voltage inside the trailer. If it's less than 112 volts I say shut it off. I know others will say 110 or even 108 but that is too low for my comfort. The bottom line is MEASURE.
Of course, if the breaker won't stay closed it doesn't matter.
Where would I connect the multimeter to measure? Sorry I'm new to this.
Leave the breaker on that feeds your receptacles in the RV and stick the meter into one of those. If there is low voltage, it will be low everywhere in the RV.
For those with inrush current concerns, a breaker can withstand a decent amount of current above its rating but only briefly. It's the continuous running current that is the primary concern.
