New 10kw NHX AIO From Watts247
- Thread starter Kornbread
- Start date
Zwy
Emperor Of Solar
Gavin wasn't on a grid connection but rather feeding power from another inverter.
I would not call that a fail for grid interactive features.
Zwy
Emperor Of Solar
Thanks for putting this out there, this unit remains on my list for my shop system. Good info.
I'm not so sure I care for the electrical push in connections. That is a minus for me.
Gavin Stone
Solar Addict
Not a fan of push connections as it seems sooner or later, the spring or some other component of the connector, becomes weak and creates a poor connection. Have a lot of issues at work from loose/failing push connections. Space wise, yeah, I get it.
Zwy
Emperor Of Solar
I think over time the heat generated weakens the spring, once it gets to a certain point, it compounds.
It must have a pretty good spring in the connector if fine stranded wire requires a ferrule.
Zwy
Emperor Of Solar
I have to ask if you had any N-G bond in the breaker panel after the NDX when performing this test?
Gavin Stone
Solar Addict
Zwy
Emperor Of Solar
Did you have a bond in the sub panel?
The reason I ask is the both inverters are of common neutral architecture and if there was a bond present in the subpanel at the time power was fed from the 18Kpv, then it ends up a parallel path. These inverters use ground as a zero reference point, any voltage on the ground can cause the light flicker you experienced.
Gavin Stone
Solar Addict
Gavin Stone
Solar Addict
So ... yeah ... the inverters have been sitting at UPS, in the next town over, for the weekend. Been welding up the next pole mount and PaTiEnTLY waiting for the man in brown.
That’s always the way it is. If you ordered a pair of socks they would be there the next morning. But an inverter? 4 day delay.
@Gavin Stone
I noticed when you had the CT connected and were pulling from the "grid", it showed negative watts. Is that correct?
I noticed when you had the CT connected and were pulling from the "grid", it showed negative watts. Is that correct?
Gavin Stone
Solar Addict
It was showing the watts the 18k/grid was using to supply loads.
yes but in negative numbers, so I'm wondering if the wires are passing through the sensors in the correct direction. with my clamp meter if I clamp backwards the numbers are negative forwards positive (just by reversing which way the wire goes through the clamp) just wondering if that could be the reason for the misbehavior?
Gavin Stone
Solar Addict
Gavin Stone
Solar Addict
It was likely something simple though. I think @Adam De Lay needs to get one of these on his wall and he can delve into it deeper.
Ok. Gotcha. I watched Ian's video again where he was pulling from the grid and it showed negative numbers as well so It looks like all is well
They're here. Expected the bent top mounting brackets as that was also an issue on Gavin's video. Did not expect 3 out of 4 cts to be broken. The included cts are ~16mm id and the 4/0 feeding my mains panel are a bit over ~17mm od. Looks like I'll have to get larger cts anyway.
Heavy buggers. Manual says 41kg/90lbs. Feels heavier to me. Wish some of these manufacturers would include some kind of grab point, or mounting handles. Even a temporary pair of handles to be removed after mounting would be very useful.
Heavy buggers. Manual says 41kg/90lbs. Feels heavier to me. Wish some of these manufacturers would include some kind of grab point, or mounting handles. Even a temporary pair of handles to be removed after mounting would be very useful.
