As Arkware said! - You can get the adapter on Amazon that adapts a 110 extension cord to you 5er's 4 prong plug. I have it connected right now in my driveway - I can run everything but AC units off a 20 amp circuit. Charges the batts and the frig stays frozen 
https://www.amazon.com/ABN-15A-30A-P...2Badapter&th=1
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Steve & Lisa
2015 Montana High Country 353 RL | Sailuns | Kodiak Disc brakes
2015 F-350 DRW Crew Cab | Reese Goosebox
Retired and Lovin’ it!
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