What OC said>
Once you disconnect water supply, the HW tank will remain full. Until you remove the plug on the outside, it will not drain. There is a breaker in the breaker panel and a switch behind the outside panel to disconnect the electric.
I think you are OK.
Life is a journey, not a destination.
2005 Georgetown 359ts
Bill & Virginia, Kentucky
Nights camped in 2011...78 , 2012...73,
Nights camped in 2013...123, 2014 ...101