[RE-wrenches] Magnum MS4024 grief

[Ray Walters]

Undoing the N-G bond at the E panel may not do it either.  Are you sure 
neutral isn't also bonded in the main distribution panel?  It usually is 
bonded at the generator, so you definitely have to unbond there.  I'd 
say 60 to 70% of off grid systems are not bonded correctly that I've 
seen.  Just what Kirk said: it should only be bonded N-G at one and only 
one spot.  Check sub panels too.  My record was seven N-G bonds on one 
site.  It caused the shower to be energized; the customer thought that 
was normal....(don't touch the shower head!?!).....That site even had a 
N-G bond in the well pump wiring!  Took 3 days of unF***ing that wiring 
to finally get it.

It ain't safe, until it's right.  The GFCI is doing its job, and so is 
the Magnum.  Now the electrician has to do his job.  Unless you wired 
the whole house, you're On to fix it.  Especially off grid, I see an 
amazing bunch of DIY garbage.  Find out who did the original wiring.  
Probably not a pro.

Ray Walters
Remote Solar

On 12/16/2022 11:35 AM, Kirk Herander via RE-wrenches wrote:
> You may have neutral and ground connected at more than 1 location, 
> meaning at the genset and in house panel, which means the ground is 
> carrying current back to the generator in parallel with the neutral.
>
> I remember with some Honda portables we had to float the neutral at 
> the genset or the inverter would trip the generator's GFI when trying 
> to charge the batteries.
>
> On Fri, Dec 16, 2022 at 1:16 PM Dave Angelini Offgrid Solar via 
> RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
>
>     The easy answer is try another genset ! You have to be more
>     specific, did it ever work? Is it new? etc. Good Luck !
>
>     *Dave Angelini Offgrid Solar "we go where powerlines don't"
>     http://members.sti.net/offgridsolar/ e-mail offgridsolar at sti.net
>     text 209 813 0060*
>
>
>     On 2022-12-16 10:04 am, Chris Daum via RE-wrenches wrote:
>
>>     Hi folks:
>>
>>     We have a new Magnum MS4024 mounted on an E-Panel using a MidNite
>>     Classic 150 and Whiz-Bang JR with power coming from an array of
>>     Trina TSM365-De06X-05(II) (three strings of three) with the
>>     ME-RC50 and a HUP SolarOne 6-85-14/24 battery.
>>     When we attempt to use the PFC (Power Factored Charger), the Gen
>>     Set’s GFCI outlets trip.  Thus far we have verified the
>>     connections are secure, assured that the gen set is grounded,
>>     disconnected the jumper within the E-Panel between the ground
>>     buss and neutral, checked AC voltages, removed the MNSPD’s from
>>     the buss(s)…  Stumped now on what an appropriate next step should
>>     be.  How do we get the PFC to function properly?  What are we
>>     missing?
>>
>>     Best,
>>
>>     Chris Daum
>>     Oasis Montana Inc.
>>     406-777-4309 or 4321
>>     406-777-4309 fax
>>     www.oasismontana.com <http://www.oasismontana.com>
>>
>>
>>
>>
>>
>>
>>
>>
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> -- 
>
> *Kirk Herander / **kirkh at vermont.solar*
>
> *Owner|Principal, VT Solar, LLC*
>
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>
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>
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