Milton passed over us a week ago. About 11:30 PM on Wed the utility power went out. I turned off the main and WH breakers, plugged in the gen cord to Pro Power and gen receptacle, turned on truck, and off we went to power the house. At about 9:30 AM the next morning the Pro Power tripped out with a message to get Ford service. Oh No! I turn off truck, restarted and Pro Power started exporting again but tripped out about 5 min later. I tried this reset strategy about 4 times. I thought I was out of luck and something had failed. Then I thought to myself that I had a solar system and it was useless when the grid was down. I then realized I had forgot to turn off the solar because when the sun came up that next morning and solar production exceeded what the house was using the excess solar production was sent back to the truck (backfeeding the inverter and tripping it out). Once I turned off the solar everything went perfectly for the remainder of the outage. About 42 hours, 100% SOC down to 59% with 3 1/2 ton AC set at 77 F. I figure I could have gone about 4 days before needing a fast charger. The best news was that the Pro Power didn't blow up when solar was fed back into the 240 outlet and the truck protected itself. I was wondering about that and now I know the answer, found out the hard way.
Milton passed over us a week ago. About 11:30 PM on Wed the utility power went out. I turned off the main and WH breakers, plugged in the gen cord to Pro Power and gen receptacle, turned on truck, and off we went to power the house. At about 9:30 AM the next morning the Pro Power tripped out with a message to get Ford service. Oh No! I turn off truck, restarted and Pro Power started exporting again but tripped out about 5 min later. I tried this reset strategy about 4 times. I thought I was out of luck and something had failed. Then I thought to myself that I had a solar system and it was useless when the grid was down. I then realized I had forgot to turn off the solar because when the sun came up that next morning and solar production exceeded what the house was using the excess solar production was sent back to the truck (backfeeding the inverter and tripping it out). Once I turned off the solar everything went perfectly for the remainder of the outage. About 42 hours, 100% SOC down to 59% with 3 1/2 ton AC set at 77 F. I figure I could have gone about 4 days before needing a fast charger. The best news was that the Pro Power didn't blow up when solar was fed back into the 240 outlet and the truck protected itself. I was wondering about that and now I know the answer, found out the hard way.
I have a NEMA 14 50 240 plug that is powered by my 7kw solar system. If you had something like that you could charge the truck with your excess solar. I have charged my Lightning at 4kw/16 amp while powering a 240 load off the PPOB 240 generator connector.
It is great to know the truck handled the solar back feed with no damage.
