Question on Current Limit for Victron Multiplus Inverter

[ryandand]

Hi all,

I'm still a bit new at trying to understand how the electrical system on these rigs work. I have a 30 amp rig, and we have a Victron multiplus inverter. When I'm using my generator or plugging into 30 Amp shore power, I keep the current limit on my Multiplus set to 30. If I'm plugging into my house outlet, I set the limit to 15. We just arrived at a campsite that only has a 50 amp outlet. I do have a 50/30 amp adapter, but am wondering what I should set the current limit to if plugging into a 50 Amp outlet. Since our rig is 30 amp, should I make sure to keep the current limit at 30 amp and not exceed that? Or do I want to match the output from the outlet I'm plugging in to, and set the current limit to 50?

I really appreciate your help!

[fcbbob15]

Since your rig is 30 amp set it to 30. You never want to exceed the rating of the wiring and circuit breaker in your rig. Personally I would not set to 30 amp. You should not exceed 80% of your breaker rating.

[ryandand]

Ok, thanks so much! So, you would recommend not setting the current limit above 24 for a 30 amp rig?

[bigb56]

Pulling a full 30 amps for a short time won't hurt a thing. The 80% rule was put in place for continuous loads which are loads that "continue" for 3 hours or more without interruption/cycling.

[Captain8]

Victron is smart enough to lower down your limit to the 80%. Since you have a 30a cable you need to limit to 30a so you don't overload the cable.

You could upgrade that cable to 50a and at least get 50a/120v into the inverter. Even if the rest of the coach is 30a you could use 30a plus have that extra 20a to charge the batteries