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Re: Cables
I'm with Don, if you're referring to electrical wires, they need to be insulated so as not to contact the frame, and color coded to denote positive and negative. Additionally, you're only supposed to strip a certain amount to go into the WAGO connections on the distribution block ( 5/8", IIRC ). Furthermore, you should always strip only a little bit more than you need, otherwise you run the risk of shorts, and other nasty things.
If you're referring to wire rope, aka aircraft cable, then no, you dont need to cover it, unless it could present a safety hazard, which might run you into some trouble with the <Sxx> rules. In the past 1075 has used an uncovered cable to drive our pneumatically-powered roller-coaster style launch track in 2008.
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