Recent content by Cmy

I also want purlin mount, what did you use to connect panel to the VB 67. I was thinking Versagard for the 3.6" bolt height, plus rail height, to help with summer heat.

Probably why I should stay with 120% limit. With a double picking up 120v from L1 and L2 for 240v, it also picks up N amps form each side but ends up with N amps and not 2N So count one side only. Thanks for helping.

No, counted total both sides. So a double 100a counts 100 for each side? Total of 11 doubles out of 16 breakers. Counting again, left side 285a, right side 340a. Left dbl 50, dbl 20, 5 single 15s Right dbl 30, dbl 20, 6 single 20s, dbl 100

Staying with the 120% rule. Counted breakers in the two room addition's 200a main panel and they total 585 amps. That includes the double 100a feeding the shop panel and a double 30a dryer breaker but no dryer.

Didn't know about sum of breakers, thought 120% ruled. Thank you.

Future proofing a second inverter feed to the lightest loaded 200a main, shifting amps from load to solar back feed.. Three mains split at the meter so grid tied nicely avoids which CT to measure. What makes future changes easier? Your 62.5a caution made me thinks some more.

Hoping the 175a main would still work if I ever decided to go hybrid and battery using a Sol Ark 15 or EG4 18kPV. No outages since the freeze making battery backup a low priority.

No, going with a 175a in the 200a main. Easier than a panel swap and gives me 65a of backfeed ability. Covers SA 15 62.5a out, EG4 18 50a, and an 11.4 48a. 1.25x48=60a breakers. Be interesting to see how many amps that 200a uses and see how low that main could go. Doubt it is over 100a...

Tempting to swap the 225 amp main with the 200 amp main breaker, but NEC probably frowns on that. Changing the 200 amp main to 175 amp main should be OK and pass the calculation rules. Swapping enclosures is more than I want to do. The addition doesn't use many amps so a 175 amp should work...

Inverter AC out to a tap on the 100a line to the 200a main panel's breakers, does the 120% 40a limit go away? Is changing the 200a main to 175a easier? The 100a panel is being replaced, perhaps become a one breaker combiner/pass through. A hom3060L225 arrived today and I have a QO225vh...

Sorry to make this so long but comments are helping. First the house panels, 1997 GE. four load wires go through the back of the meter panel, through exterior wall, and through the back of the right 200a panel's lower left corner. One pair to the right main and the other pair through the stud...

Thanks all for the help. This is an old-1987 100a panel, not so old-1997 house, and 2019 addition. Original owners had an apartment in the 50x60 100a building supporting 50g hwh, jacuzzi, dryer, and motel style hvac (low heat, high heat, etc). Still worked when I arrived in 2010. Originally...

Cut and paste dropped lines. Replacing 12 breaker 100a shop panel with larger, need more breakers and amps as need for inverter. 225a on order,

When we did the addition for a mother in law apartment the County asked for a septic engineer's report that the current system could handle an additional bathroom. It could but, before we drain line covered, a County septic person came out, checked the drain connection for proper slope, and...

No city inspectors only utility. Nothing has raised a question about size until you get to megawatt production. Utility currently feeding my meter enough for three 200a main panels, should be able to send a few watts back. Didn't know about the 120% rule until joining here. The 200a picture...