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. % }+ W y$ w5 G: o9 T 7 r# o& ?' `) p; c$ }5 p2 B" }what is best connection?