I can't make sense of it. I manage to run two A/C's off a single leg of 30A divided to both A/C's. I do have the MicroAir Softstart on both units. When running they pull less than 14A. So...if you are in a 50A shore power connection, and the panel is balanced...you should easily run four...
That is not how a softstart works, that plug-in device would effect all the power in your RV.
I have installed softstarts on 200 HP motors to small half HP motors. They HAVE to be connected to the specific device (motor) and controlled to operate during start up (and sometimes shutdown)...
Very,vary sceptical!!!
Why???
15k unit runs, not starts on 1500 watts. Or roughly 100 watts for 1k BTU.
So you can softstart one ac on 3000w generator, but the second will exceed the capacity of the generator.
But there's more! The generator has a power dip before the engine catches up...
What we are looking at!
A single phase(technically two phase) compressor motor has a run capacitor. In the old days a softstart device was an increased capacity capacitor (typically under 10bucks.)
In a dedicated system there may have been a relay and a start capacitor.
No matter, when the...
Finished up everything and turned my system on to test yesterday. All is well. Next week I will install two softstart units. Going to wait and see if I even need solar.
...3100 for running the A/C. I think this unit should be able to start an run my 13.5 A/C with no problems but I have been looking into the softstart products and came across this product on Ebay; RV A/C Starter™ Easy start your Camper Rooftop Air Conditioner, SIMPLE DIY! | eBay
I was...
...usage and unless there is a pms involved there's no chance of running two rooftop units on 30 amp, ordinarily (unless the rooftop has a softstart capacitor) a 30 amp won't support a running 15k btu unit and microwave simultaneously. I suspect running a 50 amp trailer through a 30 amp dogbone...
You may need a full blown vehicle charger... sone "trickle chargers" wouldn't pump out much.
I haven't tried this... butbif you can start your coach, or start your coach with a jump. Let it run...and check the voktage on the chassis on your digi-level display. When it gets up around 13+...
Running draw for a new 13.5 btu a/c is 12-13 amps in a ‘spec world’.
However you will need a “softstart“ device as most motors pull significantly more at start up without some type of modification.
...an option for an overnight stay while on the road. As mentioned previously the start up of the AC is where you are probably getting overloaded. Last time I looked Softstart makes a dogbone version of their otherwise "installed at each AC" device, might be worth a look for use while traveling.
...get an adapter (below) to run all the small stuff, but you wont be able to run an AC. You might be able to run an AC if you install a “softstart” kit (second pic) on it. I don't have any experience with these but others here seem to have had good results. I’d post another question such as...
By replacing your startup capacitor with its much smarter electronics it lowers the amount of AC current required to start your air conditioner or heatpump by up to 60% to even 75%. So, let's say you are plugged into a 15 or 20 Amp circuit while moochdocking, you might be able to run one of...
Your AC might require less to start, might be smaller unit, or could have a softstart processor already in it, and might be newer then mine. Glad yours works, 3000 is your running watts most likely, not your surge watts.
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