diy solar

diy solar

New 10kw NHX AIO From Watts247

Yes - I want to have it supply solar to cover my loads and feed Grid power in as needed - which it can do. Additionally, I want to backfeed my home grid to do zero export if possible. I mean I know it does that - but I am cautious about any backfeed that the meter can detect.
I'll be watching closely for any info from your testing . Thanks
 
To clarify, I want a critical loads panel on load1 and feed back to the grid via the grid connection for zero export. That way when the power does go out, my critical loads are still covered.
beautiful!!

please post detailed vids.(y)(y)(y)
 
beautiful!!

please post detailed vids.(y)(y)(y)
LOL - looks like I have to work for once. I have been lurking on this forum for a LOOOONNGGGG time. I feel like I know several of you even though I have never met you. I'll see if I can do some decent testing and report back some meaningful results.
 
Sent an email at 8:25 and Watts replied by 9:34.

One thing I must say about Watts247 ... SigSolar needs to learn from Watts customer service!

How many of these 10k units would it take to replace a 200amp utility service?
 
Sent an email at 8:25 and Watts replied by 9:34.

One thing I must say about Watts247 ... SigSolar needs to learn from Watts customer service!

How many of these 10k units would it take to replace a 200amp utility service?
200a is 48kw
 
200a is 48kw
That's what I was thinking, 5 units. It would be awesome to cut the cord and go naked but my amp probe has clocked the load testers, IIRC,

=/>200amps, rough average ~60kwh/day. Stove top, oven, microwave, dishwasher, dryer, washer, a/c, water heater, deep well pump, and of course the tv all going at the same time. That kind of power just isn't feasible with all the trees we have in and around our property. Battery bank would also need to increase from the current 120kwh.

I'm thinking more along the lines of 2-3 units and offsetting the poco bill. No net contract with the poco so absolutely cannot feed to grid.

Wasn't there a unit out there, when paralleling, if the output of only one unit was needed, only one unit drew power, but if more than that was needed, the other unit also began supplying power?
 
Sent an email at 8:25 and Watts replied by 9:34.

One thing I must say about Watts247 ... SigSolar needs to learn from Watts customer service!

How many of these 10k units would it take to replace a 200amp utility service?
You should determine your surge load, that makes a huge difference. A 200A service is never fully utilized, unless there are several large loads running at once.

A pair of 10K units is 20Kw, about 80A per leg. In my shop the peak 15 min demand is 9Kw (about 40A per leg) . While there is surge on starting motors, as long as the inverters can cover that surge, my demand should be 9Kw or less. So a pair would most likely handle my shop needs, Ian showed 11.4Kw draw in his video before overload shutdown occurred.
 
That's what I was thinking, 5 units. It would be awesome to cut the cord and go naked but my amp probe has clocked the load testers, IIRC,

=/>200amps, rough average ~60kwh/day. Stove top, oven, microwave, dishwasher, dryer, washer, a/c, water heater, deep well pump, and of course the tv all going at the same time. That kind of power just isn't feasible with all the trees we have in and around our property. I'm thinking more along the lines of 2-3 units and offsetting the poco bill. No net contract with the poco so absolutely cannot feed to grid.
What's the highest demand you've ever registered? I have an all electric house with 200a service but my highest demand ever was approx 20kw (83a)

95% of the time I'm under 40a
 
You should determine your surge load, that makes a huge difference. A 200A service is never fully utilized, unless there are several large loads running at once.

A pair of 10K units is 20Kw, about 80A per leg. In my shop the peak 15 min demand is 9Kw (about 40A per leg) . While there is surge on starting motors, as long as the inverters can cover that surge, my demand should be 9Kw or less. So a pair would most likely handle my shop needs, Ian showed 11.4Kw draw in his video before overload shutdown occurred.
I got 2 load testers! I'll have to put the amp probe on the meter again some afternoon. For the life of me, I cannot remember the amp draw, but do remember thinking about how the main 200amp breaker hadn't tripped yet.
 
Two nhx 10kw on the way.

Ian doesn't think there will be any issue with a long ct lead. In this case, about ~50'. Is there a specific cat5 cable that I should be looking for as it will be ran in conduit underground.
Awesome! Glad to see these getting out there into users hands for testing. Please over communicate your observations/testing
 
Two nhx 10kw on the way.

Ian doesn't think there will be any issue with a long ct lead. In this case, about ~50'. Is there a specific cat5 cable that I should be looking for as it will be ran in conduit underground.
I'd use direct burial rated shielded twisted pair. Cat5, 5e, 6 etc would work.

Edit it's been over a decade since my networking days so let other advise too.
 
Awesome! Glad to see these getting out there into users hands for testing. Please over communicate your observations/testing
Be patient. There is an occasional 72hr work week but regular work weeks are 12days on, 2off. Makes for very little time for projects and sleep ... sleep is at a premium wherever/whenever it can be found. Still welding together a 12panel ground mount started 2months ago.
 
Really appreciate that. Keep us posted on the install and how it works for you.
Excellent vid Gavin. I'm impressed with the idle consumption. I appreciate that you went over the pluses and minuses.

Sadly it looks like the same megarevo problems that plagued the old units are still there. Namely -it works well as an off-grid inverter but the grid interactive features don't seem to work.
 
Excellent vid Gavin. I'm impressed with the idle consumption. I appreciate that you went over the pluses and minuses.

Sadly it looks like the same megarevo problems that plagued the old units are still there. Namely -it works well as an off-grid inverter but the grid interactive features don't seem to work.


Call and chat with Ian maybe. I believe it functions well in that department also. That’s part of what they worked in the last year or so with firmware updates.

My grid options were limited. So testing would have been a bit complicated for time of use and other settings. In the next couple months I may try to work on ways to test options like this easier.
 
Call and chat with Ian maybe. I believe it functions well in that department also. That’s part of what they worked in the last year or so with firmware updates.

My grid options were limited. So testing would have been a bit complicated for time of use and other settings. In the next couple months I may try to work on ways to test options like this easier.
Thanks! I'll wait for the vid from Ian showing the grid interactive functionality.
 
Back
Top