This is a hypothetical question, for now.Has anyone tried to run 2 a/c units with 1 large gen? 15k and 13.5k btu.I have a 3500 watt gen with 4600 watt surge. I'm wondering if it would be possible to run both a/c units using the 30 amp twist-lock outlet if both a/c units had a soft-start installed?

Stagger the start up and yes. From Micro air site the watts run around 1500 with the soft start in place.

Doubtful.Softstart only helps on startup surge, doesn't help on overall running wattage and that goes up as the temps increase..Try running both on your gen as is, start one up wait a few seconds then start the second one.. Then see how long it is until your breaker trips.

Coleman lists their 13.5K Mach 3+ as drawing 12.8 amps (1540 watts) in moderate weather, or as much as 15.4 amps (1850 watts) in "desert" conditions.Coleman lists their 15K Mach 15 as drawing 13.9 amps (1670 watts) in moderate weather, or as much as 16.0 amps (1920 watts) in "desert" conditions.That's the continuous running wattage - not the startup surge.

I run my two on an Onan 5500w. I'm guessing you could run either of yours but not both.

Tend to agree, 5500 W will run two 15K ACs, but 3500 is questionable.Try it and see what happens, make sure everything else is turned off or disconnected.

2 a/c units on 1 gen? | Good Sam Community

joebedford
Nomad II
Jul 22, 2022
I run my two on an Onan 5500w. I'm guessing you could run either of yours but not both.
Skibane
Explorer II
Jul 22, 2022
Coleman lists their 13.5K Mach 3+ as drawing 12.8 amps (1540 watts) in moderate weather, or as much as 15.4 amps (1850 watts) in "desert" conditions.

Coleman lists their 15K Mach 15 as drawing 13.9 amps (1670 watts) in moderate weather, or as much as 16.0 amps (1920 watts) in "desert" conditions.

That's the continuous running wattage - not the startup surge.
Gdetrailer
Explorer III
Jul 22, 2022
Doubtful.

Softstart only helps on startup surge, doesn't help on overall running wattage and that goes up as the temps increase..

Try running both on your gen as is, start one up wait a few seconds then start the second one.. Then see how long it is until your breaker trips.
wanderingaimles
Explorer
Jul 22, 2022
Stagger the start up and yes. From Micro air site the watts run around 1500 with the soft start in place.

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