Recent content by krfish

Just an update: Washers count! There was one washer in his system that he installed after the original assemble. That washer was a 3/4" washer. His goal was to level out the bus bar as he was unhappy with it not being quite level with the one it was attached to. He replaced that washer with...

Thanks! Yes, 1800Ah of battery, typed question fast. Technically there are 3 batteries capable of delivering 120 amps each. We have 4/0 wire, good lugs, etc. --- but the washer thing ... will have to go double check that one.

Hi, I have helped a friend build a really big battery setup for his RV. Here is the basics: * 1800 Amps of 12 battery * Victron Shunt * Victron victron multiplus split phase The question: when charging on city power, the inverter pushes almost 120 amps. The bus bar that is connected to the...

Thank you! I was hoping that was the case.

I have purchased a system that consists of 3 EG4 batteries, 1 - 6500EX and a server rack. I have 9 solar panels that will be connected to the 6500EX. But I also have 6 panels that are connected to a Victron 150/100. My question is: The Victron will be charging the EG4 batteries at the same...

The biggest problem I see is that the motor appears to pull about 437 amps at full load startup. In fact, if you look at the link, it appears to state 450a (assuming 450 amps). That motors running amps looks to be around 179. So the key things I would think to consider is making sure your...

Maybe this will help: As others have tried to point out, you are using 8 amps at 120 volts. That is 960 watts (8*120). If your inverter is running at 12 v, then you can divide that 960 watts by 12 to get the amp draw on your system. That is a 80 amp draw... ...and is why you are killing...

I've graduated from buying pre-built batteries, such as the Ampertime Battery, to building my own. Love it - should have done it from the very start. But now I am realizing that the Overkill BMS literally tells me everything. I am going to get rid of the lead acid battery in my RV and build...

Panels dont really care about their degree of rotation to the best of my knowledge and experience. It's mostly about angle to the sun.

It's all about that inrush current. I have not been able to run my HVAC either with that inverter and I am running 4/0 cable. I will be replacing the inverter...

I have heard this particular inverter works well with compressors. It's a low frequency inverter: https://www.electriccarpartscompany.com/3kw-apc-inverter

@gnoeld: I am running that particular inverter - it is a high frequency inverter, not a low frequency inverter. It only holds surge loads for 20 milliseconds. So you need to find a unit that can sustain around 9000 watts for 20 seconds or more.

I have run into this problem myself. The issue is that the spec on your HVAC does not include inrush. Most HVAC compressors have a minimum of 6 times the run current value. Some go as far as 10 times. Your inverter is not 6 times more powerful than your HVAC. FYI .. this is why low...

Circuit breakers are designed to pop slow. The industry standard is for 2 seconds at 6 times the rated load. So your 25 amp breaker would take 2 seconds to pop at 150 amps. It will take longer to pop at say 80. This standard was created because of devices such as compressors.

Do you have any idea how much inrush current your heat pump is pulling. Some compressors can pull up to 4 times their stated runtime current. For example, a HVAC system that runs at 20 amps might pull 80 at startup. I'm not familiar with the specifics of your inverter, but 50 amps of...