Quote:
Originally Posted by Mudfrog
Before closing,,, How did you load test the breakers? You stated 2 x 250 = 500. I'm trying to figure out how you worked them together to make a 500 amp protected circuit. Is the 1000W load correct?
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Yeah it's complicated, I did not say everything in order to avoid unnecessary discussion.
Instead of 1 x 500 Amp circuit breaker I had 2 x 250Amp Circuit breakers protecting my inverter & 2 chargers.
The reason for this is that single 500Amp fuses were absolutely unavailable (maybe except some industrial solutions I had no access to) when I was designing the installation.
Generally I have 6 Exide Dual AGM Deep Cycle batteries, 180Ah / 1500Wh each, total 9000Wh / 1080Ah 12V.
1 Battery is in the usual battery compartment, 3 batteries are in front of the coach, 2 batteries are in the back of the coach for weight balancing (the GCWR/GVWR per axle weight limits are not as strict in the Europe as they are in the US though, so I am able to do that)
- The 3 batteries in front are protected by 2 x 200Amp fuses (or maybe 250Amp fuses, not completely sure)
- The 1 battery in the battery compartment under stairs is protected by 100 Amp fuse
- The 2 batteries mounted in the back are protected by 2 x 200Amp fuses
- All of the batteries are joined after the breakers to make one single circuit
- 8000 Watt Inverter is then connected to the joined single circuit through the protection of 2 x 250Amps breakers (total 500 Amp): I designed/predicted the maximum peak load on the inverter to be 6000 watts, which is 500Amps, hence the 500Amp breaker for peak load.
I also previously battle-tested the inverter with about 4200 Watt load with the car audio breakers and they worked at the time - years later their casings completely melted and got destroyed unfortunately.
The plastic was not designed for high temperatures at all. Shocking. What were they thinking?
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Right now I think I will go for single MEGAVAL fuses since they are available in 500Amp versions currently.
I really hope these work, I am really annoyed by this.
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