ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Where is Everyone?
by gfretwell - 06/20/21 10:53 PM
Happy Father's Day!
by Bill Addiss - 06/19/21 04:16 PM
A Risky Setup
by timmp - 06/18/21 08:08 PM
Conduit over Vinyl Siding
by Jim M - 06/16/21 08:30 PM
Updated Forum Software
by Admin - 06/15/21 10:23 AM
New in the Gallery:
2020 - 2021 Winter Project
2020 - 2021 Winter Project
by Bill Addiss, April 29
Garden 2021
Garden 2021
by Bill Addiss, April 26
Who's Online Now
0 members (), 15 guests, and 17 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#120863 05/14/05 10:13 AM
Joined: Oct 2000
Posts: 3,661
Likes: 1
Admin Offline OP
Administrator
Member
Quote
Question: How would you go about fixing this installation? Or…would you not even bother?


Background: “Smurf” tube is installed to protect UF cable that is supplying power to a GFCI convenience receptacle on the side of a wastewater treatment chlorine contact tank.

Glenn (safetygem)
[Linked Image]

#120864 05/14/05 10:34 AM
Joined: Feb 2002
Posts: 2,233
H
Member
First question I would ask is "Is the area classified? i.e. Class 1 Div. I? or is it in an unclassified area?

#120865 05/14/05 01:59 PM
Joined: Jan 2005
Posts: 5,316
Cat Servant
Member
I'm going to start by stating the assumptions upon which my answer is based.

- I assume the area is unclassified;
- that there is a circuit entering the back of the box;
- that corrosion is a problem; and,
- that the area where the wire is run- right along the curb- can be considered to be 'without traffic,' due to the heigth of the curb.

So, here's a solution:
1- Replace "Bell" box with 4x4x4 PVC box (you can drill opening anywhere in back);
2- From bottom of box, stub out PVC 90, continue PVC run slightly below grade;
3- At end of PVC, use a female adapter and a compression-type UF cable grip to attach UF.

As I see it, the "smurf" is being used for additional mechanical protection, and possibly to reduce a trip hazard. The only problem....if there is one...is that it appears the Smurf is connected properly to the box- which makes me wonder if there is anything mechanically connecting the UF. The wiring connections need some sort of strain relief.

I also suspect that the install was done with the box horizontal to prevent it from profecting above the curb; it is possible that a round box would also create such a trip hazard.

#120866 05/15/05 12:52 PM
Joined: May 2005
Posts: 706
T
Member
I'm tired of getting down on the ground for things like this. Maybe we could plant a cedar 4X4 and mount the bell box high enough so I could pull up a chair and be comfortable. I'm sure I'd be using something more "Rigid" than smurf tube.

Dave

#120867 05/15/05 01:05 PM
Joined: Jan 2005
Posts: 5,316
Cat Servant
Member
:-) Tiger...I like your idea, and would like to see it made "code". My old bones are tired of all this crawling, stooping, climbing, etc.

#120868 05/15/05 08:41 PM
Joined: Feb 2005
Posts: 693
L
Member
I agree. We should lobby to have the floor raised to a height that would eliminate having to bend down to retrieve dropped stuff.


Larry Fine
Fine Electric Co.
fineelectricco.com

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
The Watt Doctor
The Watt Doctor
Mont Belvieu, TX
Posts: 437
Joined: December 2001
Top Posters(30 Days)
Trumpy 10
Admin 10
Popular Topics(Views)
280,448 Are you busy
213,527 Re: Forum
200,406 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5