TT plugged in at home?

SoundGuy wrote:

Terryallan wrote:
Fact is. IF it pulls too many amps it will trip the breaker. then you know you need more

Not as simple as that as success depends greatly on the ability of the circuit in question to provide voltage within the specified norms and to not suffer excess voltage drop under load due to excessive cable length and/or inadequate cable gauge. One must also factor in the breaker tripping time which for a typical 15 amp / 20 amp TM (thermal magnetic) breaker will allow up to 7 times surge voltage before causing an instant trip, ergo the reason an A/C's LRA (Locked Rotor Amp) rating that can easily be 65 amps isn't normally a factor.

I keep our trailer here at the house during the camping season plugged into a 15 amp drop in the workshop (here in Canada 20 amp is not a standard as it often is in the US). That 15 amp drop is fed from the house breaker box with an estimated 60' of 14 gauge Romex ... from there I have 25' of 10 gauge main service cable feeding the trailer. Ambient outside temperature both outside and inside the camper as I write this is ~ 85F or ~30C. With the trailer plugged into my workshop 15 amp source and everything in the trailer switched off, including the converter, unloaded source voltage reads ~ 121.5 vac. When I turned on the A/C fan voltage dropped a couple of volts, when I then turned on the A/C compressor voltage momentarily dropped to ~ 108 vac then quickly recovered to ~ 114.5 vac with a current draw reading on my Progressive EMS (which reads just to the volt) ranging from 12 to 13 amps. As A/C compressor head pressure began to increase voltage gradually dropped another volt to ~ 113.5 vac and current reading on my EMS reads 14 amps (again just to a unit value). It's now been running for a 1/2 hour just fine off this 15 amp circuit and would continue to run the rest of the day until I turn it off. :B

I agree with this. Our TT is stored in an old barn with electrical service installed in the 1950s. We don't run the A/C because we can see the voltage drop big time on our EMS. We want our A/C to last. ;)