From what I understand the issue to be is not the radio or the way it is wired into the circuit, it is the fact that when you sweat, there are salts in the moisture that conduct electricity. There have been several cases (6 I think) where loaders, unloaders, sorters have reached up to the radio for what ever reason, sweat running down their arms, and been killed by the shock. So this is not some joking matter like FE's post. It is a really serious problem. After the fact it is usually traced back to a problem with the radio, but that is not much consolation to the dead employee or UPS.
You could/would have the same problem stepping out of a hot tub, reaching down to turn on a light switch. All it takes is a little sweat into the switch and you get zapped.
BTW FE Your post " When I'm walking down the belt, I'd like to know there isn't some stray voltage waiting to knock me down. " spoke volumes about your knowledge base. But I am sure it is not some stray voltage that you really need to worry about that would be waiting to knock you down.
And of course we all knew "Yes, you guessed it, I'm on the CHSP committee."
Im sorry. I get this picture of a little guy with a pee wee herman look skipping down the belt, keeping a sharp lookout for bolts of stray voltage that are shooting out from everywhere to knock him down. Damn you are just too funny. I bet the guys in your building get a real kick out of you every day!
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