All ActivityMost RecentMost LikesSolutionsRe: On demand water heater installationnot exactly sure but the device that will take priority will be an on demand electric water heater. the secondary will be the a/c unit so a 20 will take care of that side.Re: On demand water heater installationthat is exactly what is needed, but in higher amperages.On demand water heater installationdoes anyone know of a device that will turn off one circuit when another is turned on? I would like to disable my a/c when the on demand water heater is turned on. this will keep me from popping breakers when the water heater kicks on.
