I finally got a response from MPP Solar.... :unsure::fp2
Output N-G is automatically bonded in inverter (battery) mode and this is meant to address any RCD application at the output side which could trip if it senses a differential between N-G. This is known as the N-G bond feature.
1. LINE...
Are you saying try bonding neutral and ground in the breaker box before the inverter? (big blue line)
Or are you talking about the line side of the GFCI?
A Clue!
I just put the inverter in bypass mode and plugged in shore power. The GFCI trips when pushing its test button, it trips when I use a circuit tester test button, and I don't get any weird reversed polarity lights. It also tripped the supplying grid GFCI outlet.
So I'm assuming the...
This is what I was thinking as far as bus bar vs battery terminals. If I only have 2 terminals on the positive and 3 on the negative it might not be too bad.
I just temporarily bonded the output side of the inverter N-G and everything seemed to function as it should.
On battery power, grid side disconnected.
GFCI test button worked
Circuit checker showed correct and test button worked
119v L-N
119v L-G
0v N-G
Continuity(obviously) N-G
Continuity...
Thanks for sticking with me on this, here are the measurements. I added one more at the end.
On shore power with Inverter set to utility first:
N in to N out 0v
G in to G out 0v
N out to G out 0v
On shore power with Inverter set to utility first but the breaker is off supplying the...
So I have my system up and running in my camper and I'm wondering if I can get the GFCI outlet to work with how my setup is configured.
My all-in-one inverter is the MPP PIP1012LV-MS.
The GFCI measures 120v hot to neutral, 120v hot to ground and 0v neutral to ground. Circuit tester shows...
For grounding on the DC side the Battery neg is attached to chassis at a single location.
On the AC input side from shore or grid power the breaker box is grounded to chassis at a single location.
The breaker box has one breaker and only feeds the inverter when on shore power.
My diagram above...
I initially set up the inverter to never charge on grid power just while I was getting things going.
Maybe if I go back in and change that setting to solar first and grid second it will pick up the AC chassis ground.
For grounding on the DC side the Battery neg is attached to chassis.
On the AC input side from shore power the breaker box is grounded to chassis.
The breaker box has one breaker and only feeds the inverter when on shore power.
I did some more testing yesterday and I'm not sure how originally I saw continuity between NG on load side when the inverter was on because you can't test a powered circuit that I'm aware of. Or am I missing something?
Maybe I was confused. I did add a hard bond as a test in the RV breaker...
Hello, I posted a similar question in the beginner forum but I'm thinking I should have posted it here.
I am building a small system for my camper and am wondering how my plan looks. The camper has no air conditioning or fridge.
The only 120 A/C we will be using will be small loads and not...
Well unfortunately I have zero experience with relays. I wouldn't know where to start unless I could find some documentation or instructions. :oops:
Not sure about program 38 either without seeing some examples and so far I haven't had any luck.
Hello.
I am building a small system for my camper and was just wondering if I could get some eyes on my diagram to see if it looks alright.
I'm wondering what gauge to use on the chassis ground to battery.
Any other issues? Thanks.
I did build it but haven't used it much yet.
The biggest thing was figuring the neutral to ground bonding and trying to get an answer from MPP Solar.
https://diysolarforum.com/threads/gfci-outlet-with-n-g-bonded-just-kidding-mpp-solar-all-in-one-inverter-on-battery-power-questions.84209/
The...
This is getting stranger. I just did another test with two outlet circuit testers to make sure one wasn't bad.
First off... the test button on the GFCI does trip it.
When I plug in both of my testers one at a time they both show correct circuit, but when I push their test button neither one...