Hi Jay,
Don’t forget to check at the inverter. As you probably know, VFXs come with
a ground-neutral bonding jumper at the AC terminals on the unit. If this
issue is not happening in bypass mode or normal inverter mode without Gen
input, then it could be possible that there is a bond both at gener
Hi Dave
I’ve already suggested that. However the house hasn’t finished final sign off
due to C19 and gross incompetence from the county process, so it’s not
possible, yet.
It’s entirely possible that at least part of the issue could be poor quality
GFCI or good quality and overly sensitive.
I second Dave's comment on trying different GFCIs. Definitely had some
that wouldn't work correctly with generator/ inverter systems. I'd take
2 or 3 other choices.
Otherwise your check list looks like the way to proceed. We always love
to hear back what you find.
Ray Walters
Remote Solar
Chris Worcester
> ch...@solarwindworks.com
> 530-448-9692
>
> Sent from my Samsung Galaxy s9.
>
>
> Original message
> From: William Miller
> Date: 12/19/20 6:30 PM (GMT-08:00)
> To: RE-wrenches
> Subject: Re: [RE-wrenches] generator tripping GFCI
>
> Fri
One way to troubleshoot this is by elimination. The genset would be a
start. The GFCI itself. I have had to switch from the contractor grade GFCI
to a quality make in new construction.
Since this is new I would make
sure on the AC panel, critical loads like the house pump or fire pumps and
refri
It might be worth checking the brushes if it is an older unit. Chris Worcester
chris@solarwindworks.com530-448-9692Sent from my Samsung Galaxy s9.
Original message From: William Miller
Date: 12/19/20 6:30 PM (GMT-08:00) To: RE-wrenches
Subject: Re: [RE-wrenches] generator
Friends:
I have seen THD on the voltage waveform trip GFIs and AFCIs. The case where
this happened was during gen run periods. AC to DC converters can be brutal in
regards to generating distortion and sending it to loads.
I am out in the shop away from the manuals, but check if these FX invert
Hi Ray
I will have to triple check, but even if it’s yes.
How does that explain the time differences?
If it was a neutralground loop, then why not it tripping everything right away?
That’s why I was thinking it’s related to the control board in the generator?
Jay
> On Dec 19, 2020, at 5:10
Jay,
Agree with Ray that two neutral ground bonds can cause strange behavior.
But the timing near the end of the charge cycle makes me wonder if the
issue is related to one inverter shutting down the charger before the
other. The VFX 3648 charger mode is a terrible load and will cause weird
o
The way a GFCI operates is by comparing the line current and the neutral
current inside the device. If some of the neutral current is returning
through a ground circuit instead of the neutral the imbalance will trip the
device. The generator neutral and the inverter neutral must have a common
neu
Is it possible that neutral is bonded to ground in the generator? I've
found lots of multi-bonded neutrals over the years, and had it cause all
sorts of weirdness.
Ray Walters
Remote Solar
303 505-8760
On 12/19/20 5:33 PM, jay wrote:
HI All,
I have a client with a older Kohler 8-10kw genera
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