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ejm avatar image
ejm asked

breaker to protect the inverter

I have a 48/5000 Quattro and have the AC output to a circuit breaker panel. I currently have it wired to a 100 amp breaker. I know that's way overkill, but I figured if i ever upgrade I would have a the # 2 wire already in place and wouldn't have to rewire it. The question I have is when I did this i didnt thhink about protecting the inverter. Should I change the breaker, so it would trip before the inverter was overloaded? I see it works in tandem with a generator, so that was another reason why I have it to a big breaker so if i need the extra power it would not trip. Please help and let me know if i should change the breaker to protect the inveter and what size would breaker would protect it from damage

MultiPlus Quattro Inverter Charger
2 |3000
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2 Answers
Guy Stewart (Victron Community Manager) avatar image
Guy Stewart (Victron Community Manager) answered ·

The breakers are primarily to protect the wires. They should be sized according to wire size (and both recommended fuse size and wire size are stated in the product manuals).

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ejm avatar image ejm commented ·

The wire is the correct size and will not burn at 100 amps. The question I have is could I damage the Quattro if for some reason i am way over the 5000 running watts it is rated for.. If it will cause damage at 10000 watts i could set a breaker to trip at 9000 watts, so that breaker would protect it. Or does it not matter and it will push as much as it could with no damage?

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Guy Stewart (Victron Community Manager) avatar image Guy Stewart (Victron Community Manager) ♦♦ ejm commented ·

There is a maximum current rating to the AC internal transfer switch that connects AC input to AC output for each Multi/Quattro, so the incoming AC breaker should be rated to the same or less.

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ejm avatar image
ejm answered ·

Then the breaker would trip when I am using it in tandem with a generator for extra power.

What is the maximum watts, so I could put the correct breaker?

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Guy Stewart (Victron Community Manager) avatar image Guy Stewart (Victron Community Manager) ♦♦ commented ·

I am not sure what you mean, could you post a wiring diagram?

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