A house owner he want to put SR heat trace in rain gutters and downspouts for winterization, he has a single house and 4 gutters/downspouts at each side, only one outlet at outside wall and one plug for plug in truck. 8 P. a* U z; u1 H; m8 D 9 t' h9 t) j; Z9 q( Nwhat is best connection?