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. $ U' O! J1 Z" p3 J% s, ]5 n : Q7 j; e S. q% e" }8 g* gwhat is best connection?