Posted by John T on February 18, 2014 at 05:11:35 from (108.106.209.146):
In Reply to: Outlet box grounding posted by Bkpigs on February 18, 2014 at 04:33:21:
When I was an electrical design engineer I always specified BOTH (Metal Box & Receptacles Green Grounding screw) were to be connected to a Green/Bare Equipment GroundING Conductor. Our electricians used the little braded wire grounding pigtails with the green screw to ground the metal box and sometimes used greenies with the green wire nut having the hole out the top for splicing all the ground wires together with the extra long wire out the top to attach to the Green Ground screw on the receptacle itself (or vice versa to the receptacle). NOTE there are other ways to accomplish the same, but regardless I would somehow attach BOTH the metal box and the Receptcles own Green Grounding screw to GroundING Conductors even if only one were used a contact between the receptacles mounting strap and the metal box is present. But that's just me and my years ago NEC training as I best recall it IE GROUND BOTH
Sure Billy Bob, if EITHER the metal box orrrrrrrr the Receptacles green grounding screw are grounded, those two get connected together when the receptacles metal mounting strap screws into the box, and yes Bubba that can work to bond both to the Equipment GroundING Conductor BUT FEEL FREE TO DO AS YOU PLEASE.
Also consult with local authority or the Utility as to what they require (NONE of us here)
NOTE This, like all other posts here (Electrical and Legal questions always draw plenty of opinions) IS ONLY MY OPINION with NO warranty, it may be right and it may be wrong, I'm NOT saying if it is or it isn't, I'm ONLY saying that's how I did it when and where I was a design engineer. Yall wire anyway you please.
John T Too long retired Electrical Engineer and rusty as an old nail on the latest codes, so some may agree with this and others may not, lets see lol
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