It is very likely that the power converter used on your unit is the same one that is used in many other units, as well. The breaker either is not wired to anything, as a spare, OR the water heater is indeed a dual powered unit, which I personally thought that they all are. Have you opened the outside cover, and checked in there for a hidden switch?? It would need to be on if indeed it happens to be AC powered, as well. It has a clip through it, locking it in the off position. Randy
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/SIGPIC]'08 V-lite Flagstaff 30WRLS
'06 Ram 1500 QC hemi Reese dual cam sway control,
K&N series 77 intake, Hellwig helper spgs. LT tires,
Flowmaster "true duals", 380 h.p., Bilstein shocks
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