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Another reason for 2 screws


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Posted by John T on December 23, 2011 at 14:47:55 from (173.243.181.15):

In Reply to: Re: simple wiring question posted by Stephen Newell on December 23, 2011 at 14:19:51:

Stephen, Thanks for the post, gotta love this enjoyable sparky chat.....Your experience is certainly appreciated, at least by those of us who are sparkies lol

You say

"Really the outlet having two sets of screws is what its made for, to string one to another."

Im NOT agreeing or disagreeing or arguing but with all due respect to educate some here who may not be aware (electricians and engineers will most likely and maybe you also) of this procedure, PLEASE BE ADVISED

Theres yet ANOTHER POSSIBLE REASON for those two sets of screws!!!!!!!!!! ITS SO YOU CAN BREAK OFF THE TIE/JOIN TAB AND FEED THE TWO (of a duplex receptacle) FROM INDIVIDUAL BREAKERS/CIRCUITS Such is whats referred to as a "multi wire branch circuit".

How it works is you can use just a single Neutral (GrounDED conductor) and two hot phase wires L1 & L2 so the top outlet is on one 20 amp circuit (one of the 2 screws) and the other bottom outlet (the other of the 2 screws) is on another 20 amp circuit yet one Neutral can suffice for BOTH. The 2 branch circuits are fed with a two pole circuit breaker with tied handles so if one is off both are. There are reasons for and aganst this but Im not going to go there now, Im not wanting to sTART a fight or argument, just to educate some who may not be aware of this particular reason and method of having two not just one screw.

NOTE this was NOT my usual method of specifying, I didnt use many multi wire branch circuits, theres a time and place for them. I have already voiced my preference opinion of wiring and others have done likewise, this post is NOT about any of that or tended to re hash it or whats best, the poster has made his choice which I respect regardless if it agrees with my method or not. THIS WAS TO EDUCATE ANOTHER POSSIBLE REASON EXISTS FOR HAVING TWO SCREWS.

God Bless yall, keep safe, were headed to see Annie with the son whose comin home for Christmas from San Diego and the Daughter form Austin TX woooooooo hoooooooooo

Merry CHRISTmas Stephen and all the others

John T


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