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Thread: Why two main breakers?
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11-13-2022, 10:32 PM #1
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11-14-2022, 04:56 AM #2
I would guess that gray box is a sub-panel for your inverter loads.
2023 Momentum 398M-R
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11-14-2022, 09:01 AM #3
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what ^^ he ^^said would also be my guess
Steph & Lise
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11-15-2022, 10:50 PM #4
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Thank you very much! You were spot on!
I don’t have Inverter not solar installed, and never figured out what it was for.
Today I traced the wires and I am more puzzled by this.
From wfco converter, from the Inverter circuit breaker there is a BLUE WIRE that goes to MOLEX box connection box.
From there black wire goes to MAIN IN expansion box left breaker.
From expansion box blue wire to another splitter.
From this splitter black and blue go to RV but only some outlets are powered. Does not appear even microwave would work.
I am thinking getting Victron 12v 2000W multiplus and would like to be able to power up everything with the exception or air conditioner. Should I just get rid off this second box and wire in all into panel directly?
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11-16-2022, 06:51 AM #5
Looking at your original picture, there is a separate circuit for microwave.
You're saying you have an inverter breaker, but no actual inverter?
If it were me and I wanted to do the Victron like you mentioned, I would get rid of that sub-panel, really since it isnt necessary, and have the correct sized wire coming out of that breaker labeled inverter and into the final junction box you mentioned.
You would install the Victron upstream of your breaker box and it would power everything (obviously depends on the power loading, but you get the idea). Assuming that model also does battery charging, I would disconnect your factory converter.
As another option, you could leave everything in place, install the Victron, and it would work the same way, you would still need to disconnect factory converter.2023 Momentum 398M-R
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11-16-2022, 07:03 AM #6
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Thank you @FT4NOW
Anywhere I read for Victron | 12v Multiplus Compact | 2000w Inverter | 80A Battery Charger | 120v recommended placement is in front of CONVERTER. All power leads go to Victron and then out to Converter. I probably need to read up a bit more to confirm…
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11-16-2022, 07:17 AM #7
I think you are meshing converter and breaker box. They are 2 separate units, but yours is integrated. The Victron should be upstream, or before the breaker box, but the converter is what charges the battery and provides 12v when on shore power. The Victron would perform the converter functions as well as the inverter function when not on shore power. You want the factory converter disconnected or it will be trying to run while the Victron is inverting if you're not on shore power, which isnt desired.
2023 Momentum 398M-R
2023 Ford F-450
SOLD - 2021 Reflection 311BHS
SOLD - 2017 Momentum 399TH
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