Newbie alert --drawing a blank on this simple connection question.

[cyberfed]

Hello bright minds,

I have serveral 48V rack mount style pack. It has two positive and two negative terminals on it. I have the appropriately sized cables with a fuse and breaker going to the inverter depending on the inverter size (some will only accept 8AWG or 6AWG).

My question is I am about to tie both of my arrays together which will allow for input amperage way higher than the breaker/fuse setups for some of these light duty inverters. If I hook up my solar power from my SCC using something like say an Anderson connector connected to one set of the + and - terminals and lets say its charging the battery at 60Amps, will that cause the other set of terminals connected to inverter (light duty ones) to have the breaker trip and the fuse pop since they are not rated to handle that kind of load, or will the 60A simply flow into the battery and charge it and the "output" (to the inverter) will be independant and draw only the amperage it need based on the inverter load? Say 10A (max) for a small 250watt inverter I have.

The charging of the battery shouldn't impact the power being drawn from the load right? Meaning the system isn't going to bypass the battery and take its power from the incoming 60A and bust up the breaker/fuse/inverter?

I'm drawing a total blank on this I dont think its an issue but I'm looking for confirmation. I'm pretty sure I've had my array charging a pack that had a light duty inverter powered on and providing power to devices and it didn't trip or bust the fuse. I think....I think....

This is how I over complicate myself sometimes. This should be a non issue right?

 

[BentleyJ]

If I hook up my solar power from my SCC using something like say an Anderson connector connected to one set of the + and - terminals and lets say its charging the battery at 60Amps, will that cause the other set of terminals connected to inverter (light duty ones) to have the breaker trip and the fuse pop since they are not rated to handle that kind of load, or will the 60A simply flow into the battery and charge it and the "output" (to the inverter) will be independant and draw only the amperage it need based on the inverter load? Say 10A (max) for a small 250watt inverter I have.

As long as the Anderson connector wiring is connected directly to the battery terminals. Charge current will flow to batteries and the inverter(s) will continue to just draw only what they need. In fact, with the batteries being charged, voltage will be higher so current to the inverter will be slightly less for any given load or amount of Watts.

The charging of the battery shouldn't impact the power being drawn from the load right? Meaning the system isn't going to bypass the battery and take its power from the incoming 60A and bust up the breaker/fuse/inverter?

As long as the Voltage is within the operating range of the Inverter, there is no way for the Charge Controllers to FORCE current into the Inverters. They simply draw what they need for the load.

 

[cyberfed]

Ok that's what I thought but I was drawing a serious lapse in memory for a second. Because I was like 99% sure I have done this scenario before. (Powered some indoor plant LEDs that use like 60 watts) but I was intaking like 1600 watts of solar (one arrary) I think they were even stacked on the same terminal post.

I know I know I'm breaking that habit, hence the anderson connectors. Each pack will have its own anderson heavy gauge wire set to charge the battery (fused at the max of what the mppts should push out, anything higher, there's a problem and other fuses and breakers will trip).

I dunno I guess I got it in my head since the 2 terminal post share the same copper busbar in the side of the enclosure that solar energy would do a basically a U-turn and go right to the inverter. Inverters are never stressed, not even close. Now that I think about this more I ran my office in this setup for weeks! While working I draw around 200 watts give or take, and about 30 or so idle. So every morning when I would start the day and the sun crept up I would see the SCC starting putting out tons of watts for solar into the battery, eventually hitting a state where it was full, then the wattage would drop to whatever I was needed at that time.

Better to ask and be safe!