meternerd
Senior Member
- Location
- Athol, ID
- Occupation
- retired water & electric utility electrician, meter/relay tech
I installed a couple of LED grow lights in my garage (built in 2013 to Code). They came with a switched connection cord, two prong polarized. They came with a jumper for connecting two lights to one cord. The jumper and the associated sockets were three prong. I hung the lights on a PVC rack, and plugged 'em in to the garage GFCI receptacle. Used to light a hydroponic herb garden...NO, NOT Marijuana..... Yesterday, I was leaning over the trays, standing on a damp concrete floor in my stocking feet and accidentally touched the metal housing of one of the lights with my forehead. I got the SNOT knocked out of me! The GFCI never tripped, polarity of the receptacle is correct and I haven't dissected the cord yet to see what went wrong. But how do you wire a three prong jumper safely to a two prong power cord. And, why did the GFCI not trip when I sent what felt like jiggawatts thru my skull? No UL label on the lights, but sold thru Amazon. Shouldn't the GFCI have tripped? I don't want to go into an in-depth investigation, but take this more as a warning. Don't be stupid and ground yourself on a bare concrete floor when working around electricity! I'm not a newbie....I should know better. I did run a jumper from the light housings to the receptacle ground and the problem disappeared.
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