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
#110555 - 05/12/06 06:54 PM More Bad Services
Trumpy Offline


Registered: 07/05/02
Posts: 8532
Loc: SI,New Zealand
Photo's and info submitted by Harold Endean:

Here is an example of a homeowner trying to do his own service. Outside was a piece of plumbing pipe with thre 3/0 copper wires running into the service in the basement. Inside he stopped the pipe and ran the wires directly into the service panel. After I fail him the first time, he removed the 3/0 wires and ran 4/0 SEU cable throught the same pipe. After a few trips there I think I finally set him straight. Unfortunately, I still might have to go back one more time to final out his job.

Let's face it, these days if you're not young, you're old - Red Green grin

2014 / 2011 NEC & Related Books and Study Guides
#110556 - 05/13/06 12:32 AM Re: More Bad Services
Trumpy Offline


Registered: 07/05/02
Posts: 8532
Loc: SI,New Zealand
Is that the finished product?.
If it is it will leak like a sieve!.
Are you allowed to clamp wires like that in an entry to a panel?.
Sure there are bushings, but what is the bare minimum in this respect?.
I see a green wire to the left of the 2nd pic, it looks like it is going through the top of the clamp, but seems to be outside of the thread in the lower part of the panel??!.
It makes me wonder if this wasn't a Home Depot advised install?.
Customer must have asked "what can I use for the bend into the house?"
HD guy "Use this, water or wires, it's all the same, the check-out guy told me so".
Let's face it, these days if you're not young, you're old - Red Green grin

#110557 - 05/13/06 04:33 AM Re: More Bad Services
MikeK3145 Offline

Registered: 09/22/05
Posts: 39
Loc: Plainfield, Il

I think the green wire has it's own clamp.

What's the silver stuff at the bottom of the last two pics? Coax?


#110558 - 05/13/06 04:51 AM Re: More Bad Services
Texas_Ranger Offline

Registered: 12/17/01
Posts: 2332
Loc: Vienna, Austria
Black wire with white paint splatters, probably coax.

#110559 - 05/13/06 09:37 AM Re: More Bad Services
Jim M Offline

Registered: 08/10/01
Posts: 453
Loc: Chestertown, MD, USA
Looks like they found a way to solve the question of whether or not a bushing is needed on a male adapter.

#110560 - 05/13/06 06:14 PM Re: More Bad Services
BigJohn Offline

Registered: 03/06/04
Posts: 352
Loc: Boston, MA
I really don't get it. These amature service upgrades. How in the world do these people know how to properly do a load calc. and determine conductor sizes, but can't figure out things like putting conductors in conduit?

It's like being able to rebuild a carbeurator but not knowing how to put gas in the tank.


#110561 - 05/14/06 05:19 PM Re: More Bad Services
mamills Offline

Registered: 11/30/01
Posts: 739
Loc: Wharton, Texas, USA
Sure glad you failed him on the 3/0's. The guy looks like he got pretty rough with them while installing. Notice the damaged insulation.

Mike (mamills)

#110562 - 05/15/06 09:12 AM Re: More Bad Services
RSmike Offline

Registered: 11/27/02
Posts: 130
Loc: Holland, MI USA
Back when I couldn't spell NEC I did a DIY upgrade from 60A to 200A service on my house. I nicked up the outer coating on the THHN I installed; pretty badly. I made a point of asking the inspector about it and he told me not to worry since that covering was only there for oil protection and oil wasn't likely a problem in my house. (no I haven't opened an oil change shop in my basement since then...)

Any thoughts.

Also what's the SEU cable on the left? What's the service size. 200amps hence the failure of the 3/0 right?


#110563 - 05/16/06 07:10 AM Re: More Bad Services
scameron81 Offline

Registered: 02/24/04
Posts: 80
Loc: Healdsburg, ca, USA
Its always been my understanding that the nylon jacket is there simply for mechanical protection. I remember reading somewhere (I can't remember where) that when the UL tests wire they remove the nylon jacket from the wire.

#110564 - 05/16/06 10:50 AM Re: More Bad Services
ghost307 Offline

Registered: 05/09/05
Posts: 882
Loc: Chicago Illinois USA
That's what a manufacturer's rep told me about the nylon jacket.
I asked him what about if the jacket gets damaged when it first comes off the reel? Does the insulation get damaged while being pulled through the rest of the run?
He told me "it's UL listed and everyone uses it...NEXT QUESTION?"
Anybody who ducks a simple question in that manner makes me suspicious. Since I've have problems in the past with THHN, I prefer to avoid it whenever possible (it's not often possible).

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