agesilaus wrote:
You are going to burn up your a/c doing that. Your house outlet is either 15 amp or 20 amp no matter what size extension cord you use. Not enough to start and keep running the a/c. You'd have to have a 30 amp breaker installed in your service box and wire that to a 30 amp outlet.
An old wives' take that ignores the facts of the matter. :R I can run
any 13,500 BTU A/C regardless of make / model on a standard 15 amp drop located in my garage which is fed with ~ 50' of Romex 14/2 from the house breaker box. With my trailer parked on the driveway the trailer's stock 25' 10 gauge main service cable will easily reach this 15 amp receptacle so in total any voltage drop is over 50' of 14 gauge and 25' of 10 gauge plus a short length of 12 gauge that runs from the back of the trailer's converter to the A/C itself.
Secondly, I wouldn't do this unless the unloaded circuit voltage at the receptacle was at least 115 vac because with the A/C running I know voltage drop will be several volts. I obviously also don't run anything on that same circuit when I'm running the trailer's A/C.
The OP hasn't said a word about nominal unloaded voltage nor voltage with the circuit under load ... ignorance may be bliss but without knowing what you're starting with no wonder it doesn't work for him. :R
Bottom line - start with a nominal unloaded voltage ~ 115 to ~ 120 vac, use the correct gauge of cable, minimize length of that cable, and there's absolutely
no reason whatsoever that a 15 amp drop can't successfully start and run
any typical 13.5K BTU A/C unit.
I do it all the time. ;) But hey, if you don't believe it
here's a video that proves otherwise. :)
