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Why is 120/208 volt 3 phase used mostly in commercial buildings, and not 120/240v like residential single phase homes? (My question is not about the single or 3 phase, but about 208 vs 240v). What is the 3 phase 208v wild leg usually used for in commercial panels? Also since romex (NM) is not allowed in commercial buildings, has anyone ever seen an application where 277/480v was used, using NM? NM insulation is good for 600v.
The Golden Rule - "The man with the gold makes the rule"
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Entire Thread
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208, 240, & 277 volt questions
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aldav53
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04/23/06 06:35 AM
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Re: 208, 240, & 277 volt questions
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earlydean
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04/23/06 11:46 AM
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Re: 208, 240, & 277 volt questions
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walrus
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04/23/06 11:59 AM
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Re: 208, 240, & 277 volt questions
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Steve McKinney
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04/23/06 12:20 PM
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Re: 208, 240, & 277 volt questions
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aldav53
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04/23/06 04:26 PM
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Re: 208, 240, & 277 volt questions
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NORCAL
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04/23/06 05:33 PM
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Re: 208, 240, & 277 volt questions
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Larry Fine
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04/23/06 05:36 PM
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Re: 208, 240, & 277 volt questions
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JBD
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04/23/06 05:38 PM
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Re: 208, 240, & 277 volt questions
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ShockMe77
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04/23/06 07:24 PM
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Re: 208, 240, & 277 volt questions
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Obsaleet
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04/23/06 11:27 PM
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Re: 208, 240, & 277 volt questions
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frenchelectrican
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04/24/06 12:01 AM
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Re: 208, 240, & 277 volt questions
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aldav53
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04/24/06 01:33 AM
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Re: 208, 240, & 277 volt questions
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caselec
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04/24/06 01:45 AM
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Re: 208, 240, & 277 volt questions
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kencr
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04/24/06 01:49 AM
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Re: 208, 240, & 277 volt questions
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aldav53
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04/24/06 01:59 AM
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Re: 208, 240, & 277 volt questions
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caselec
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04/24/06 02:07 AM
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Re: 208, 240, & 277 volt questions
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aldav53
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04/24/06 03:27 AM
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Re: 208, 240, & 277 volt questions
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Larry Fine
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04/24/06 04:54 AM
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Re: 208, 240, & 277 volt questions
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Larry Fine
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04/24/06 04:55 AM
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Re: 208, 240, & 277 volt questions
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aldav53
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04/24/06 05:06 AM
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Re: 208, 240, & 277 volt questions
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WFO
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04/24/06 11:22 AM
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Re: 208, 240, & 277 volt questions
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Larry Fine
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04/24/06 02:29 PM
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Re: 208, 240, & 277 volt questions
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aldav53
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04/24/06 02:47 PM
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Re: 208, 240, & 277 volt questions
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Roger
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04/24/06 04:16 PM
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Re: 208, 240, & 277 volt questions
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aldav53
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04/24/06 05:54 PM
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Re: 208, 240, & 277 volt questions
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gfretwell
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04/24/06 09:09 PM
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Re: 208, 240, & 277 volt questions
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Scott35
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04/25/06 08:56 AM
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Re: 208, 240, & 277 volt questions
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Larry Fine
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05/07/06 10:10 PM
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Re: 208, 240, & 277 volt questions
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Roger
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05/07/06 10:37 PM
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Re: 208, 240, & 277 volt questions
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e57
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05/08/06 12:00 AM
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Re: 208, 240, & 277 volt questions
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Larry Fine
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05/08/06 12:16 AM
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Re: 208, 240, & 277 volt questions
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Larry Fine
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05/08/06 12:32 AM
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Re: 208, 240, & 277 volt questions
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Larry Fine
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05/08/06 12:43 AM
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Re: 208, 240, & 277 volt questions
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PCBelarge
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05/08/06 02:28 AM
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Re: 208, 240, & 277 volt questions
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georgestolz
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05/08/06 03:36 AM
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Re: 208, 240, & 277 volt questions
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JJM
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05/08/06 06:35 PM
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Re: 208, 240, & 277 volt questions
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LarryC
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05/08/06 07:51 PM
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Re: 208, 240, & 277 volt questions
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e57
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05/09/06 12:29 AM
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Re: 208, 240, & 277 volt questions
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e57
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05/09/06 12:42 AM
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Re: 208, 240, & 277 volt questions
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Redsy
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05/09/06 01:00 AM
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Re: 208, 240, & 277 volt questions
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Scott35
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05/09/06 02:04 AM
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Re: 208, 240, & 277 volt questions
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georgestolz
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05/09/06 04:00 AM
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Re: 208, 240, & 277 volt questions
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aldav53
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05/09/06 06:55 AM
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Re: 208, 240, & 277 volt questions
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SolarPowered
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05/09/06 07:47 AM
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Posts: 44
Joined: July 2013
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