Double insulated versus grounded plug
Double insulated versus grounded plug
(OP)
Our safety team here at our facility is hell bent on removing all of our desk type fans because the plugs aren't grounded. Where they are made of plastic, most of our department feel this is over the top as far as safety goes.Most of them are probably double insulated anyway. Is there any reference in the NEC or OSHA that anyone can let me know about and help to straighten this problem out?? Thanks, Ballpeen.





RE: Double insulated versus grounded plug
RE: Double insulated versus grounded plug
The above comes from a discussion I remember back in my High School Electricity-I class. We also discussed what double insulated means and IIRC it means that both the hot and neutral lines are switched (I suppose in case it is plugged in backwards) AND there is an insulation barrier to the case, which is generally non metallic.
You might have an easier time finding a UL standard to this effect than finding an NEC standard, though typically UL tends to follow NEC pretty close.
RE: Double insulated versus grounded plug
The nice thing about double insulated appliances is that you can operate them safely outside the equipotential zone without risking a shock should the protective conductor start to float above local earth. Grounding them removes that protection.
Having said that, I wouldn't be at all keen on appliances that are neither grounded, nor demonstrably double-insulated.
A.
RE: Double insulated versus grounded plug
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RE: Double insulated versus grounded plug
RE: Double insulated versus grounded plug
RE: Double insulated versus grounded plug
Cheers,
Nick
RE: Double insulated versus grounded plug
Something with an approval tag.
Like from China...
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Double insulated versus grounded plug