ECN Forum Forums General Topics of the Trade General Discussion Area Solar: The Ghost of Carter

Actual utility feeds UPS. UPS output feeds subpanel. Micro inverters connected to UPS subpanel along with "vital loads". Vital loads include battery bank charger for initial UPS.

This assumes UPS can safely support loads when utility power is available and PV is not available. Basically PV powers the loads not utility. Excess power goes into batteries, not backfeeding the utility.

Greg has pointed out another problem endemic to the solar industry: manufacturers vanishing. This would be a natural part of business development - how many car makers have disappeared? - but it's made much worse with the government raising hopes and expectations.

The governmental involvement also gives a major steroid shot to the scam artists. "Solyndra" is perhaps the best know such scam.

"Micros" are listed in both 120v and 240v designs. I am not aware of any LISTED units having simple plugs - they have to be wired to a dedicated breaker for back feeding. At least, that's what the instructions say!

I have no way of knowing how these units- or any other listed solar system- will interact with UPS systems, or other generation systems.

This is the old thread

https://www.electrical-contractor.n..._grid_connect_solar_pane.html#Post203047

Here's a shot of an install we did last fall>

This is a micro inverter pedestal w/ 'gross generation meter' , feeds into the main panel

The layout is via a local solar guru btw, we do our best to meet art 690 , etc.

The poco has their own GGM contingent who sign off

~S~

They anti-island REno

i have no idea how they discriminate a poco sine wave from a ups, or genny for that matter

~S~

Wow, a blast from the past....sparky is in the house!!

It's been a long drought my friend.

Apologies Hot One

anyways, the green machine has got me .....guess it was only a matter of time....:)

~S~

More fat for the OP conflagration if you will gentlemen ....

I hail from a small state, Vermont. It's so 'blue' one could probably pick it out from Pluto...

This means anything 'green' gets a hoof in the door easily here.

Traditionally we've been inundated with 'solar guys' , who appear shortly after most federal funds are sent to our beloved energy nazi's ,,,,Efficiency Vermont, most of which disappear quicker than sh*t thru a goose when it;s dried up...:lol:

Short version, i highly suspect most of these folks could be considered clinically unstable in any other venue given the stark cognitive dissonance they project

But you'd have to be in the trade , and witness the collusive elements behind the ROI involved

This isn't a capitalist venture , it does NOT stand on it's hind legs w/o a handout/up

Worse, they come looking, knocking on doors......all paid via that little 3% 'efficiency premium' on our GMP lectric bills

I'm hard to find (the Jehovahs have given up) yet these sorts KNOW i'm an electrician , and drag me out on my porch for a meet/greet...

I'm slowly being convinced that 'ill retire with some sort of solar powered company baseball cap here while i drool in art 690 .....

~Sparky~

~s~:

I have only seen one solar 'solicitor' knocking at my door.

We have 'solar snipers' that are in the big box stores, on the outside of 'Best Buys' (Electronics), and at the local minor league baseball field.

FWIW, resi solar jobs have been pouring in for plan review and permit release.

The 'grace period' drop dead date for 2011 NEC ends March 6, 2016. The rush is on.