This is just a suggestion: completely disconnect your water heater (remove supply wires) and then plug your trailer into the GFCI again and see if it trips......on occasion the water heater element has burnt out and is tracking thus tripping GFCI....and it will not trip on a regular breaker.
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Fonzie
2011 Rockwood 8319SS with ProPride 3P hitch/GoodYear Marathons/TST TPMS 507
2019 F350 Ruby Red 6.7l diesel 3.31 axle electronic locker
Yamaha 3000iseb generator:Progressive Ind. EMS-HW30C : Eastern Ontario
Nights Camped: 2014 (18) 2015 (18) 2016 (36) 2017 (32) 2018 (42) 2019 (28) 2020 (35)
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