Newbie here that has not ventured into the computer controlled lights yet but give me time!
My latest static light display includes 5 strands of C9 incandescents. I kept blowing the inline fuse in light string number 1 closest to the power source. Power source is a #12 awg 25' extension cord plugged into a dedicated 20 amp GFCI breaker.
I get out my Kill-A-Watt meter and learn the draw is 5.96 amps with a 5 amp fuse. I figure I have some room there so I replace the fuse with an 4 amp/240 volt which I believe should give me 8 amps at 120 volts. I install the new fuse and 1/2 hour later the power cunsumption at the outlet is the same and wire on string 1 is not warm so I figure all is good.
1 hour later new fuse is blown.
What am I missing?
Thanks for any education