Q1: Should there be a(n emergency) power switch next to an electric water heater?
Q2: If A1 is no, is it okay to have one anyway?
Q3: If A2 is yes, what kind of power switch should I use? I don't think I can use a regular light switch because this cable is 10/2 AWG and both the black and the white are hot. I need something that has two charges in and two loads out.