The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#186945 - 06/06/09 05:14 PM Lucky carpenter
petey_c Offline
Member

Registered: 01/30/05
Posts: 62
Loc: Miller Place, NY USA
Carpenter working in a small strip mall went to remove what he thought was a plumbing waste or vent line. Turns out it was the three phase feed for the unit he was working in. Good thing the power was turned off. He didn't realize it until he was through all four lines. The electrician who wired the mall had schedule 80 on the exterior wall and SCH 40 DWV for the interior. Next door is a day care center.... The carpenter took the rest of the day off to reflect on his good fortune.



Edited by Trumpy (06/06/09 08:27 PM)
Edit Reason: To add picture

Top
Tools for Electricians:
#186951 - 06/07/09 11:43 AM Re: Lucky carpenter [Re: petey_c]
packrat56 Offline
Member

Registered: 03/03/08
Posts: 76
Loc: MT, U.S.
Man, that carpenter is lucky.
_________________________
I have a sense of adventure, I just keep it leashed with common sense.

Top
#186960 - 06/07/09 07:07 PM Re: Lucky carpenter [Re: packrat56]
frenchelectrican Offline

Member

Registered: 02/06/03
Posts: 938
Loc: Wi/ Paris France { France for ...
One.,

The carpenter is dangbat lucky He do need to take the day off to get his nerves relax.

Now the other issue is the DWV pipe I do not know how they allow it in first place for myself I will never go that route too easy to make a mistake like that.

Merci,Marc
_________________________
Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)


Top
#186965 - 06/08/09 07:24 AM Re: Lucky carpenter [Re: frenchelectrican]
ghost307 Offline
Member

Registered: 05/09/05
Posts: 876
Loc: Chicago Illinois USA
I try to avoid MI cable for a similar reason.
I can just see someone deciding to reroute those Copper water lines...not knowing that it's really the feed to the fire pump.
_________________________
Ghost307

Top
#186991 - 06/09/09 07:11 PM Re: Lucky carpenter [Re: ghost307]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6785
Loc: Brick, NJ USA
Petey:
You said....'The electrician who wired the mall had schedule 80 on the exterior wall and SCH 40 DWV for the interior.'.....

Sure it wasn't a plumber? Your area of NY has permits/licenses/inspections right??
_________________________
John

Top
#186992 - 06/09/09 07:16 PM Re: Lucky carpenter [Re: HotLine1]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6785
Loc: Brick, NJ USA
Marc: (Frenchelectrician)

DWV (plumbing) pipe is NOT allowed. I have seen plumbing PVC used for irrigation (low volt) wiring for lawn sprinklers, and the occasional homeowner using plumbing pipe, but I have to say in 40+ years.....I have not met a hack that used DWV for a feeder, much less an electrician
_________________________
John

Top
#187000 - 06/10/09 04:04 AM Re: Lucky carpenter [Re: petey_c]
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8530
Loc: SI,New Zealand
One thing that seems strange about this.
Isn't DWV white and electrical conduit grey?
Sure, only a real hack would use DWV to enclose wiring with water pipe, but the onus is on the "carpenter" to actually identify the service in the pipe, before cutting it.

By this I mean, if the pipe did not head to a water fitting, would that not make you think twice?

Let's be real here, it only takes a minute or two to trace where a conduit/pipe leads to.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

Top
#187006 - 06/10/09 06:40 AM Re: Lucky carpenter [Re: Trumpy]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6785
Loc: Brick, NJ USA
Mike:
I agree with you 100%. Things happen when people hurry a job, or do things 'outside' of their trade, specially during 'demo' stages of jobs. Fortunatley in this situation, the power was off.

A quick side note:
Years back, industrial bldg, interior demo & renovation. WE marked all conduits w/fluor. orange or red spray that where 'live' and were to remain. The 'demo' guys with long oxy.acetleyne torches 'cut' a 4160volt feeder. The cut was 6" from the marking spray, and next to a 4160 sticker. That was one large 'boom'.
_________________________
John

Top
#187008 - 06/10/09 07:52 AM Re: Lucky carpenter [Re: HotLine1]
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5299
Loc: Blue Collar Country
Mike, I think that "DWV" is actually black, and made of a different plastic than PVC. Ordinary PVC glue won't work.

Ampther mistake was calling it 'schedule 40.' Drains need not withstand the same pressures as water pipe, and thus is usually a much lighter material.

In the picture, the stuff looks gray, but that is probably because of lighting, and the 'fuzz' on the cut edge.

As for the carpenter not feeling the wires inside: There have been many times I have used my saw on steel pipe, and have cut through it in a heartbeat. This might have been the case here - the cut was complete before he had any idea there were wires inside.

The 'sawzall' was nearly the last tool I bought; by contrast, for many guys it seems to be the first. I've seen plenty of guys go into a playfull frenzy when the tool comes out, filling them with that pure joy that comes from destroying things.

Top
#187011 - 06/10/09 10:09 AM Re: Lucky carpenter [Re: HotLine1]
EV607797 Offline
Member

Registered: 10/25/06
Posts: 756
Loc: Fredericksburg, VA, USA
Quote:
...I have to say in 40+ years.....I have not met a hack that used DWV for a feeder, much less an electrician


Well, John: There's a first time for everything. Here's a pic from a camp ground in South Carolina:

http://i98.photobucket.com/albums/l268/ev607797/Beach09.jpg
_________________________
---Ed---

"But the guy at Home Depot said it would work."

Top
Page 1 of 2 1 2 >



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals