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04-13-2010, 05:41 PM
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#1
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Fried Bologna um um good!
Join Date: Jan 2010
Location: nc
Posts: 8,092
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Do you indentify your ungrounded conductors on a single phase system
Was at a job today. Single phase service, only one voltage in building 120/240. One ungrounded conductor indentified with a "hot color".
I do that on 3 phase systems and where there are different voltages in a building but thats it. Anyone else mark theirs? Why? Why not?
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04-13-2010, 05:44 PM
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#2
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PGW Professional
Join Date: Jan 2007
Location: Rahway, NJ
Posts: 12,804
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I used to do it and sometimes still do specifically for this reason. Whatever you do don't use red because the poco guys might think it's single phase high-leg delta I use blue when I do.
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04-13-2010, 05:56 PM
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#3
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ET Road Warrior
Join Date: Feb 2009
Location: Long Island, N.Y.
Posts: 27,336
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I always mark one leg red.. the SEU comes with either black/red tracer or one leg completely red.
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04-13-2010, 06:10 PM
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#4
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Fried Bologna um um good!
Join Date: Jan 2010
Location: nc
Posts: 8,092
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I dont run alot of seu.I usally run a riser and xhhw alum. I dont take the time to indentify the phase's because I see no reason to. I have seen others that were marked but never had the urge to do it myself.
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04-13-2010, 06:16 PM
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#5
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ET Road Warrior
Join Date: Feb 2009
Location: Long Island, N.Y.
Posts: 27,336
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If you lose one leg of the service, it just makes it easier to follow the bad leg... always good to take the guess work out of the service call 
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04-13-2010, 06:19 PM
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#6
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Chief Electron Relocator
Join Date: Sep 2007
Location: Cornpatch USA
Posts: 31,315
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How does a 120/240 volt service only have one voltage? 
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In winter, why do we try to keep the house as warm as it was in summer when we complained about the heat?
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04-13-2010, 06:22 PM
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#7
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Fried Bologna um um good!
Join Date: Jan 2010
Location: nc
Posts: 8,092
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Quote:
Originally Posted by Magnettica
I used to do it and sometimes still do specifically for this reason. Whatever you do don't use red because the poco guys might think it's single phase high-leg delta I use blue when I do. |
Ok 110.15 requires a 4wire delta to have the high leg marked orange. Only seen one of them. Never heard of marking the high leg red. Different voltage delta???
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04-13-2010, 06:50 PM
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#8
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child please.....
Join Date: Oct 2008
Location: Hack City, USA aka New Orleans
Posts: 5,267
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Quote:
Originally Posted by jwjrw
Ok 110.15 requires a 4wire delta to have the high leg marked orange. Only seen one of them. Never heard of marking the high leg red. Different voltage delta???
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That's how they used to mark the high leg around here..with red...I did one the other day and I used black, red and orange...I wonder if I confused the lineman?
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04-13-2010, 06:53 PM
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#9
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Wire Ninja
Join Date: Jan 2007
Location: Beautiful Cumberland Valley, in PA
Posts: 16,794
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I've never built a new high leg service. The only time I mark phases at a service head is when it's an upgrade, and I want to make sure the rotation gets put back correctly. I normally even write on the service head something like "Bk-Rd-Blu, CW"
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04-13-2010, 06:58 PM
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#10
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Fried Bologna um um good!
Join Date: Jan 2010
Location: nc
Posts: 8,092
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Quote:
Originally Posted by MDShunk
I've never built a new high leg service. The only time I mark phases at a service head is when it's an upgrade, and I want to make sure the rotation gets put back correctly. I normally even write on the service head something like "Bk-Rd-Blu, CW"
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I started the post asking about marking the ungrounded in a single phase 120/240. We ended up talking about deltas.
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04-13-2010, 06:59 PM
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#11
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Wire Ninja
Join Date: Jan 2007
Location: Beautiful Cumberland Valley, in PA
Posts: 16,794
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Quote:
Originally Posted by jwjrw
I started the post asking about marking the ungrounded in a single phase 120/240. We ended up talking about deltas.
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That's how it goes. Welcome to the forum.
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The Following User Says Thank You to MDShunk For This Useful Post:
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04-13-2010, 07:00 PM
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#12
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child please.....
Join Date: Oct 2008
Location: Hack City, USA aka New Orleans
Posts: 5,267
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Quote:
Originally Posted by jwjrw
I started the post asking about marking the ungrounded in a single phase 120/240. We ended up talking about deltas.
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OK then...no, I don't mark those, just leave them both black.
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04-13-2010, 07:00 PM
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#13
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Fried Bologna um um good!
Join Date: Jan 2010
Location: nc
Posts: 8,092
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Quote:
Originally Posted by 480sparky
How does a 120/240 volt service only have one voltage? |
Well you read what I said and not what you know I meant. Did I mean Different Voltage systems? Spit it out 480. 
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04-13-2010, 07:00 PM
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#14
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child please.....
Join Date: Oct 2008
Location: Hack City, USA aka New Orleans
Posts: 5,267
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Quote:
Originally Posted by MDShunk
That's how it goes. Welcome to the forum. |
Yeah, really. When does anything stay on topic?
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04-13-2010, 07:01 PM
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#15
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Wire Ninja
Join Date: Jan 2007
Location: Beautiful Cumberland Valley, in PA
Posts: 16,794
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FWIW, I've never felt especially compelled to mark each leg of a single phase system.
__________________
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Catch a man a fish and you can sell it to him.
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04-13-2010, 07:02 PM
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#16
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Fried Bologna um um good!
Join Date: Jan 2010
Location: nc
Posts: 8,092
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Quote:
Originally Posted by Black4Truck
If you lose one leg of the service, it just makes it easier to follow the bad leg... always good to take the guess work out of the service call |
Most of our stuff is back to back or side by side so that isn't an issue usally.
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04-13-2010, 07:05 PM
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#17
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Fried Bologna um um good!
Join Date: Jan 2010
Location: nc
Posts: 8,092
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Quote:
Originally Posted by NolaTigaBait
Yeah, really. When does anything stay on topic?
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About 10% probably. But I do enjoy a smart a** comment as well as the next guy.
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04-13-2010, 07:06 PM
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#18
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Les Voltage
Join Date: Nov 2009
Location: MS
Posts: 901
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Quote:
Originally Posted by 480sparky
How does a 120/240 volt service only have one voltage? |
opps!!!!!!
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04-13-2010, 07:07 PM
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#19
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Fried Bologna um um good!
Join Date: Jan 2010
Location: nc
Posts: 8,092
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Quote:
Originally Posted by MDShunk
FWIW, I've never felt especially compelled to mark each leg of a single phase system.
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Me either. Never have. But see it sometimes and was wondering if the electrician thought he had to or just did it for the heck of it. Could be either or both I guess.
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04-13-2010, 07:11 PM
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#20
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Les Voltage
Join Date: Nov 2009
Location: MS
Posts: 901
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Maybe it was a T&M job..
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