Recent content by Robkh

Thank you - great info as I missed those facts in the manual…from the Wombat

Building 4000W solar array to power two EG4 6000XP inverters in parallel with two EG4 PowerPro batteries in parallel. I read the NEC requires a DC ground fault protector to disconnect PV+ line to prevent fires. So I called Signature Solar tech help and they don’t sell the device and do not...

Yes I had a Lynx distributor but I wasn’t able to find the Victron MPPT manual’s recommended 80-100A Megafuse in 58V size as Victron doesn’t make 58V mega fuses that small. I ditched the Lynx and will use an 80-100A 48V ANL fuse as I am unfamiliar with NH fuses.

1/0 gauge ampacity is 170A X 1.25 = 212A fuse - nearest is 200A T class fuse battery line. MPPT line 70A X 1.25 = 87.5A fuse - I have used ANL fuses before - can I continue to do so using one with a close match to 87.5?

I have 1/0 battery cables. What is your recommended T class fuse size? What wire gauge would you recommend from my 48V battery to the MPPT and what size fuse do you recommend for that MPPT wire? Thanks.

Planning totally off grid EV charging and 240V supply to pool heater. Two EG4 6000XP in parallel to two EG4 PowerPro batteries for 50A 240V supply to an off-grid service panel - grounded to earth ground via continuous 6g copper wire attached to two 8 ft pounded into dirt earth-ground. There will...

Converting 12V system to 48V - 15,360Wh 300Ah battery equivalent wired to 1,820W Solar connected to a Victron Multiplus II 120V 48/3000/35-50 and a Victron SmartSolar charge controller MPPT 150/70 Tr. Victron Multiplus II manual recommends 125A Mega fuse on battery line to inverter but many on...

I forgot that the neutral ground bond clears the fault. My error. Thanks for clarifying Timselectric.

One more question regarding NEC 690.47(A)(1) - most PV systems are functionally grounded rather than solidly grounded. Mike Holt says that for functionally grounded systems, the inverter equipment grounding conductor is connected to the grounded distribution equipment. This connection is used...

Thanks good to know 6AWG is overkill. I will eventually have two ground mounted arrays, each delivering Vmp 310V PV array current 13A. What size copper do you recommend?

I have a 4000W ground mounted array >100 feet from the house. Even though NEC 690.47(A)(1) says that “the PV output circuit is the only connection to ground required for the PV system” do you recommend I still run 6AWG copper ground wire with my PV cables in a buried conduit to join with the...

The 5 HP pump runs the swim current for the Endless Pool and is built in and cannot be switched out. To get over the inrush surge that could overwhelm a high frequency inverter, I wonder if placing a Soft Start on the power line could reduce the surge to tolerable levels. I see that Will Prowse...

Thank you all. I bought two copper ground rods and drove both 8 feet down 10 minutes each about 7 feet apart - review of my house plan showed the riprap boulders were further south from the site of the ground rods. I connected the two rods with a 6 AWG copper wire. Problem solved.

Planning off-grid 240V 25A EV charge system with EG4 6000XP inverter and EG4 PowerPro 14.3 kWh battery in my house garage. My house is built on riprap (boulders to raise it above a flood plain) which I cannot drive an 8 foot grounding rod into. Nearby is a steel garage on concrete pad - I...

Thank you…you did a great build