I would like to know why and when house wiring in the U.S...

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Question by Larry
Submitted on 7/18/2003
Related FAQ: Electrical Wiring FAQ (Part 1 of 2)
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I would like to know why and when house wiring in the U.S went from 2 wire duplex outlets to 3 wire duplex outlets?

Answer by SHAUN31
Submitted on 11/20/2003
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YEARS AGO THEY DIDN'T USE A GROUND WIRE. NOW WE USE 14/2 WITH GROUND FOR MOST HOUSE WIRING AND USUALLY USE 14/2 WITH GROUND FOR LONGER RUNS OR MORE LOAD. IF A LONG DISTANCE LIKE TO A GARAGE DETACHED USE A 10/2 WITH GROUND. IT IS REALLY STILL TWO WIRES----A WHITE (NEUTRAL) AND A BLACK (HOT) ONLY WITH THE GROUND COPPER WIRE ALONG WITH THOSE MAKING IT 3 WIRES. THATS WHY THEY CALL IT 3 WIRE OR 14/2WIRE WITH GROUND. GLAD TO HELP

Answer by msj520
Submitted on 2/19/2004
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++vkkkkkkkkh hl

Answer by mister switch
Submitted on 5/24/2005
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14/2 romex is used for loads 15 amps or less because it has a ground it is not considered 3 wire romex three wire romex has two current carrying conductors and a netural and a ground wire is rated in amps match wire size with the load it is serving example 12/2 wg 20 amps 10/2 wg 30 amps long runs you need to concider voltage drop some instances you can go to the next size wire depending on the current load

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