There may be an NFPA reg somewhere, but the practice is based on liability.I know it's good practice, but is there any code out there (in the US) that governs safties on lights and other equipment that is hung in the air? Of course the ADHJ can decide that they want something, but is there any actual code involved?
I think that safetying is based on weight, so I would have one on each lamp, and then safeties to the weight of the bar. I probably would drill a hole in the bar and thread a cable through that, so the safety would not slide off.
Would the live wires inside have any influence on your decision?I would probably not drill a hole in a load bearing structure such as the bar. ...
Would the live wires inside have any influence on your decision?
Steel PARs or aluminum?
it's alumin i um ( make sure you add the i !!)
"Aluminum" is the American spelling.
I think?
My take is that clamps are a temporary attachment device, thus require a safety cable. Add to the fact that cast c-clamps are not load rated and can pop apart under the right conditions.
Are safety cables a good idea, even on lights that are bolted to a par bar? Absolutely. But are they as required as if you were using clamps? Not in my opinion.
I almost never see safety cables around fixtures hung from flush-mounted unistrut. In some cases, it's not even possible. Bolts just aren't as likely to come undone.
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