Sorry to post a question I know has been hashed and rehashed for years now but I can't find a straightforward definitive solution, so here goes...
This is a travel trailer install, will use shore power, PV, genie & batteries
MPP LV6548, (mfg date prior to March 2022) original firmware
N/G bond screw REMOVED
2x EG4 48v 100Ah batteries
1200w PV
trailer inlet hardwired to MPP 6548
MPP 110v out wired direct to trailer load center
In operation:
Pretty sure this was not the case prior to removing the internal N/G bond screw - which I removed because of tripping the on-shore GFCI. This is the case whether 48v-12v converter is connected or not.
Shouldn't the MPP unit's internal transfer switch handle switching appropriate ground config automatically?
Is there possibly a simple setting to correct? Or firmware up date (and which one?)
If you have experience with this situation please help.
This is a travel trailer install, will use shore power, PV, genie & batteries
MPP LV6548, (mfg date prior to March 2022) original firmware
N/G bond screw REMOVED
2x EG4 48v 100Ah batteries
1200w PV
trailer inlet hardwired to MPP 6548
MPP 110v out wired direct to trailer load center
In operation:
- 110v shore power via trailer inlet through MPP = all good
(prior to removing MPP internal N/G bond screw it would trip "on-shore" GFCI) - 110v generator using N/G bonding plug via trailer inlet through MPP = all good
- Inverting from batteries or PV gives good power but no ground
Pretty sure this was not the case prior to removing the internal N/G bond screw - which I removed because of tripping the on-shore GFCI. This is the case whether 48v-12v converter is connected or not.
Shouldn't the MPP unit's internal transfer switch handle switching appropriate ground config automatically?
Is there possibly a simple setting to correct? Or firmware up date (and which one?)
If you have experience with this situation please help.