Posted by John T on June 11, 2016 at 12:22:07 from (216.249.76.23):
In Reply to: Re: Electrical help posted by Stephen Newell on June 11, 2016 at 10:57:43:
EXCELLENT, love good sparky chat, just to add a bit more detail and info for the non sparkies:
"The ground and neutral are often joined in a main breaker because it's connected to the Utility"
NEUTRAL GROUND BONDING IS REQUIRED BY THE NEC and in addition, the Neutral MUST be connected to a proper Grounding Electrode(s) usually using for example a No 4 Soft Copper "Grounding Electode Conductor" at A) The service entrance drop or B) In the Meter Base or C) In the main panel. Id go one more step then say "OFTEN" as EVERY Main Service Entrance Panel I ever designed or specified or supervised installation of had a Neutral Ground Bond. Some Buss Bars were bonded together using a cross tie bar, other cheaper Panels may have just used one single common Buss. When I designed power distribution systems I bonded Neutral to the utility transformer frame and to a No 4 Bare Copper wire down the pole to an earth ground rod and then at the building main panel or service drop or meter base, I again bonded Neutral to a Grounding Electrode Conductor to a proper Grounding Electrode(s).
"This is why I suggested wiring the ground to it's own earth ground rod."
IN ADDITION my reading of the NEC (no warranty I'm long retired) requires every buildings (I consider a remote shop or barn a building myself???) electrical service be connected to a Grounding Electrode. Of course, the Equipment GroundING Conductor that runs out from his Main Panel is tied to the Equipment Ground Buss also WELL DUH LOL I have read arguments no Grounding Electrode is required out at the shop, sub BUT NO WAY IM EVER SUGGESTING OR DESIGNING IT THAT WAY LOL
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