Pro Power Onboard

[Daveyboi69]

I have the 7.2 kW pro power onboard. When I plug into the 240V 4 prong outlet in the bed to power my generator panel on the house it only draws from the A side not the A+B and when the load get to 3600 watts it shuts itself off. The B side never takes any load and it never comes close to 7.2 kW. Any thoughts?

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[Antimatter22]

Is your panel wired to balance load across each lead? I don't know much about electrical panels, but are all of the breakers located on one side of the panel?

 

[Daveyboi69]

Yes, but I don't think that would determine how the pro power onboard regulates and provides power to the panel.

 

[Antimatter22]

I doubt the Pro Power is smart enough to balance loads on its own. Maybe it is. My guess is that it just receives a load and provides whatever power it can over it's leg of the cable. It still acts as two 3.6kW inverters, but you get the advantage running 240V appliances. If you know your house set up is good, it wouldn't hurt to check the cable between the truck and house but I'm sure you've already done that.

Also, I'm an idiot and didn't think about how an electrical panel board is designed so ignore that from before.

 

[FrankThompson]

It means you are only connected to 1 phase in the house. If all your breakers are on one side then every other one is on a different phase (so a 240v breaker spans 2 phases).

That said if all your load is on 1 phase, you will only get 3.6kw of power.

The generator provides 2 120v legs at 3.6kw each combined you get the 7.2kw at 240v.

I highly doubt your house is wired as single phase (though anything is possible), but also highly unlikely that in a normal situation you wouldn't pull from both phases.

Is this your house? Are you disconnected from the grid when you did this? How are you bypassing the bonded neutral, or do you have a bonded neutral switch in place.

Basically I think we need more info on your setup. Pics help a lot too.

 

[FrankThompson]

Also, it is possible your generator panel is only single phase. If that's the case you only will get 3.6kw.

 

[notabot]

I have the 7.2 kW pro power onboard. When I plug into the 240V 4 prong outlet in the bed to power my generator panel on the house it only draws from the A side not the A+B and when the load get to 3600 watts it shuts itself off. The B side never takes any load and it never comes close to 7.2 kW. Any thoughts?

Great question! I've seen the same thing on my Pro Power thingamabob too...

 

[Daveyboi69]

Yes its my house and yes disconnected from the main grid when hooked up. The Pro Power will power many of the outlets and lights in the house but only up to 3.6 kw on A, B never "connects". B will work at the same time as A is powering the house if I plug something directly into the 120V outlet on the truck. Thanks for all this, pics to follow.

 

[FrankThompson]

If B is never used, then:

1) your generator hookup is only set up for single phase, or
2) the cable you are using is broken and only feeing a single phase,
3) your house is set up for only 120v, which would be really odd in NA.

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