Hey guys, I'm working on a quasi-temporary install of my 18Kpv and I wanted to see if anyone might have some feedback on safety or best practices.
Background: My electric service has a history of power outages, some several days long, the worst year I had about half a dozen outages. I've had a ~4kW solar system installed for a few years now, but it's kind of a goofy setup that makes it difficult to integrate batteries without a larger electrical tear up. I put in a 7500W transfer switch in the basement about a year ago and it's been great, but I've only got an EU2200i. It runs most the house (lights, TV, internet, ceiling fans, furnace fan) but I don't use the high load circuits (AC/Microwave etc.).
After watching one of Will's videos on split phase inverters as a backup I decided to invest in 6 EG4 LL batteries and a split phase all-in-one inverter to be used solely for battery backup for the time being, and charge it using a chargeverter if need be. Here's where the challenge comes in. To future proof a bit for either tearing up my current house or for moving to a new place, I decided to oversize to the 18kpv. I've only just realized it's not the greatest idea to throw a 10/4 SOOW generator cable on the 18kPV load output directly because it's nowhere near the 6 gauge minimum at the load terminals to support a 50a output.
I'm thinking the best course of action is running 6/3 wire to a split phase sub panel with a 30A breaker, then 10/3 going to a L14-30R outlet that I can run to the transfer switch.
I'm not sure if there's any safe way to limit the inverter output or the battery discharge amps as a work around. Seems kind of sketchy to me. Anyway, was just curious if anyone had any thoughts on the matter.
Background: My electric service has a history of power outages, some several days long, the worst year I had about half a dozen outages. I've had a ~4kW solar system installed for a few years now, but it's kind of a goofy setup that makes it difficult to integrate batteries without a larger electrical tear up. I put in a 7500W transfer switch in the basement about a year ago and it's been great, but I've only got an EU2200i. It runs most the house (lights, TV, internet, ceiling fans, furnace fan) but I don't use the high load circuits (AC/Microwave etc.).
After watching one of Will's videos on split phase inverters as a backup I decided to invest in 6 EG4 LL batteries and a split phase all-in-one inverter to be used solely for battery backup for the time being, and charge it using a chargeverter if need be. Here's where the challenge comes in. To future proof a bit for either tearing up my current house or for moving to a new place, I decided to oversize to the 18kpv. I've only just realized it's not the greatest idea to throw a 10/4 SOOW generator cable on the 18kPV load output directly because it's nowhere near the 6 gauge minimum at the load terminals to support a 50a output.
I'm thinking the best course of action is running 6/3 wire to a split phase sub panel with a 30A breaker, then 10/3 going to a L14-30R outlet that I can run to the transfer switch.
I'm not sure if there's any safe way to limit the inverter output or the battery discharge amps as a work around. Seems kind of sketchy to me. Anyway, was just curious if anyone had any thoughts on the matter.
