Hedges

Better to say: -20C minus +25C = -45C deviation from STC -0.35%/degree C times -45C = +15.75% It's important to get the sign of the...

No -20 to +25 equals 45. Try it on a calculator or do it on graph paper with a line in the middle for zero. If you are math challenged...

You pay $0.19 to $0.23/kWh. If you do 100% DIY labor yourself, including building batteries from individual cells or buying cheapest...

Examine MC4 connectors for corrosion before assembling. They are in the weather, and some may have ended up in puddles. I got some...

Offgrid or ongrid? Your panels and microinverters, if M215 puts out 215W, would deliver 47kW, 197A. Is net metering available? If so...

The SI 6048US I bought 3 years ago (DC Solar inventory) have Li BMS option. The 5048US I bought years before do not. The 5048US do...

Are you counting single-pole breakers? Count breakers on L1. Separately count breakers on L2. Select the larger of the two numbers. But...

If 2s and 2s were wired in parallel but oriented differently with a 60 degree angle between them, they would never present more area to...

That's what doesn't work well. The 1 panel will pull down voltage of 2 panels series. You'll end up with output similar to 2P. You will...

Only to inquire. First, visit your utility (PG&E) website. Register an account and enter your system design, using their pull-down...

Most decent MPPT, SCC or inverter, can handle PV capable of delivering excessive current. They will declare an Isc limit. That...

Well, inverters record lifetime power production. Record lifetime PV MPPT harvesting, record lifetime export through CT to grid and make...

OK, so just to comply with tariff requirement that battery doesn't get charged from the grid, then later discharged to grid? If only...

I don't understand what the issue is regarding PCS. Was that to limit 18kpv to 16A backfeeding into 100A panel? Limit backfeed to grid...

You might do a line-side tap, 100A fused disconnect, feed 18kpv from that. If you can free up 2 slots in your panel by using tandem...

A 320W panel is going to be at least "24V" nominal, 35Vmp, 40V or so open circuit. That shouldn't be used with PWM and 12V battery, need...

I don't think heating elements have high TCR like an incandescent bulb (10x current when cold). Current draw the moment heating element...

1) Main breaker + backfed PV breaker at other end of bus doesn't exceed 120% of busbar. 2) Main breaker + backfed PV breaker anywhere on...

If you have lugs allowing 3x 200A panels and one is available, maybe 200A panel with 125A main and 100A backfed breaker. Or 225A, 125A...

Installer, I think, and from there you can set user password as well.