polyester fiberglass resin, from the boat store or home improvement.
irie-i said:8 gauge wire from a 40 amp circuit into an intermatic timer. it then splits into 120v, the two right boxes, and also 240v through the breaker box on the left, one 15a breaker for each of the 4 left boxes. i also wired in a plugin right to one of the circuitbreakers because i have 9 lights. so 2 lights on each of 3 circuits and 3 lights on the 4th circuit. i think my ballasts run about 3a or 3.5a
You're blowing air through instead of sucking it through? I always set them up to suck air through.