Hi All,
I have a couple strings of new Halloween lights, which are essentially like the small incandescent bulb Christmas lights (not LED) that plug directly into AC mains (120V). I would like to splice several of these lines together to make one long string of Pumpkin lights. Each run of lights (10 lights/run) is terminated with a polarized 2-prong plug. The way they are constructed, you basically have to connect each line to an AC power src. The plugs are cascadeable but this enforces a star like configuration which is less desirable.
Now, the real question, I would like to splice 4 runs in total, together, hence 40 bulbs total and the safety warning label says not to exceed 210 lights so I am well under the max load rating. The wiring is insulated 20 AWG stranded copper. What is the best way to insulate each joint? My approach is to use a "Western Union Splice", solder, and wrap 1-2 revolutions of 600V electrical tape around each joint and slide over some standard heat shrink tubing to seal the deal. My question for the group is whether this combined electrical tape and heat shrink is adequate enough to _safely_ insulate these joints from electrical shock?.
How does one properly interpret the 600V rating on black electrical tape? I would _assume_ that applies to a single layer of the tape. Theoretically speaking, would the tape alone be enough to insulate the joint to prevent electrical shock? What about the standard electronics hobbyist grade heat shrink? What is its insulating properties? Is it similar to electrical tape in terms of insulating properties?
Thanks in advance,
Mike