Recent content by time2roll

State of charge is interesting. What is the actual voltage of each battery? Use a separate voltmeter. Have the batteries been through a charge/discharge cycle?

THHN will be very stiff. Will still take a lug and connect. Going to be an effort to get the wire bent to avoid stress on the component terminals.

I use a Meanwell NPB-450-12 as my generator is small and mostly charged with solar. There is a larger 1700 version. I don't think even 100 amps would hurt those batteries one bit.

My electrician just pulled #2 NM-B across my attic for a sub panel. It could take your arm off.

How will load dump work if the water is hot? Need two thermostat settings. May need a separate pre heat water heater to be left cold and only power with 120v. Existing can stay at 240. Space could be an issue.

Posts? There is a bar to bolt the lug to. I have an old discontinued Go Power 2000w sine wave inverter. But any brand will connect with 2/0. Quality 2/0 marine wire is good for at least 280 amps and a 2000w inverter will pull 170-190 amps as it approaches peak rated power. I installed 4/0...

2/0 feeds a 2000 watt inverter nicely on 12v. Probably go 4000w on 24 volts.

May as well get the 1288 for 30a rating

The bus bar gets more convenient as more circuits are added for other loads and charging. Eventually the terminals fill up. For that set up no bus is needed. Can be easily added in the future if needed.

Yes!

Put your volt meter across the fuse and see what it reads. Start at the wires and work your way in to direct on the fuse and see if anything jumps. This is to verify all connections are tight.

1/0 to #2 pin connector - amazon

I have 5' of 4/0 on a 2000w inverter and it is always cool. Even at 170 amps. Today I would go 2/0 unless the connection is more than 6'. #6 on the controller is fine. Still should have a fuse on the battery side of the wire...

If the battery is full and very little power is flowing the controller has already adjusted to restrict power to near zero. The solar power is not moving anywhere. As for disconnected.... my controller will not power up until the battery is connected. Manual is very specific to connect to...

Depends on the controller. Some have very specific warning. I believe the issue is at higher current flowing through an MPPT and the controller may not have time to adjust for a battery disconnect. Will it automatically always destroy the controller, NO. If the batteries are floating there...