120 VAC mini lights dimming and going out periodically

Discussion in 'Tips and Tricks' started by DanJ, Nov 17, 2013.

  1. DanJ

    DanJ Full Time Elf

    Aug 14, 2013
    Likes Received:
    I put ~1500 lights (mini incans) on a large oak tree today. I figured I would just keep stringing them in series until I blew a fuse on the first string, then power up from that point on with a "new" 120 VAC feed. Well, I ran into an interesting problem. I did blow a fuse; replaced it and everything was good. But I kept having about 500 lights dim, then go out, then come back on periodically. So I picked a point relatively close to the "center" of the strings and a point near the top 1/3 of the strings and provided each of those with separate power feeds. After that, no more dimming or going out. Just figured I would share with others.... I am figuring perhaps the "shunts" in the light strings may have resulted in some voltage drops or something. Not worth troubleshooting; I just added some new feeds with vampire plugs and SPT-2 wire.

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