ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
VDE 0100 to introduce AFCIs
by LongRunner. 01/17/18 10:32 AM
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
Air Compressor feeder conductor sizing
by Potseal. 01/15/18 09:08 PM
Under carpet cable?
by HotLine1. 01/15/18 09:57 AM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 30 guests, and 13 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Fence as support ? #85376
06/25/03 08:03 AM
06/25/03 08:03 AM
R
Redsy  Offline OP
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Would it be acceptable to secure a PVC conduit run to the bottom of a chain link fence? Huge roots & rock would impede digging a trench.
Has anyone ever used a fence as a support structure?

2017 / 2014 NEC & Related Books and Study Guides
Re: Fence as support ? #85377
06/25/03 10:24 AM
06/25/03 10:24 AM
R
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Redsy,
I've seen fences used for conduit support. It works well with metallic conduit, but the spacing of the fence posts is normally too far apart for PVC conduit where supports are required every 3' for 1" and smaller and every 5' for 1 1/4" through 2". You will also need to install expansion joints if the calculated change in lenght is over 1/4". An outside run of PVC here in Illinois that is exposed to direct sunlight will may require two expansion fittings every 100'.
Don


Don(resqcapt19)
Re: Fence as support ? #85378
06/25/03 10:27 AM
06/25/03 10:27 AM
G
GEO  Offline
Member
Joined: Mar 2003
Posts: 47
Lancaster,Pa
have used top of chain link fence, by running conduit,this was coated to match fence(green)worked well and is still in existance. GEO

Re: Fence as support ? #85379
06/25/03 10:53 AM
06/25/03 10:53 AM
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,888
NY, USA
I think strapping conduit near the bottom of a chain link fence would be putting the conduit where it could very likely be damaged by people stepping on it.

For argument's sake could pressure treated 4x4s or RR Ties be considered as support laid on the ground between posts? (the conduit would be strapped to it at appropriate intervals and to the posts) It would help protect the conduit in the spans between posts. Would that be acceptable to everyone?

Bill

[This message has been edited by Bill Addiss (edited 06-25-2003).]

Re: Fence as support ? #85380
06/25/03 11:00 AM
06/25/03 11:00 AM
R
Redsy  Offline OP
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Don, GEO thanks for your input.

The pipe would be installed at ground level, so "support" per se, is not an issue.
I'm also interested in attachment method to the fence, which would actually be used to "fasten" the conduit in order to keep it from moving.

Re: Fence as support ? #85381
06/26/03 03:36 PM
06/26/03 03:36 PM
R
Redsy  Offline OP
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Bill,
Didn't mean to slight you by omitting your name. You must have been posting while I was writing.
I am considering the PT 4x4s. I guess they would need to be anchored w/ rebar spikes.

Re: Fence as support ? #85382
06/26/03 04:12 PM
06/26/03 04:12 PM
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,888
NY, USA
Redsy,

No problem here. [Linked Image] That happens to me a lot because sometimes it may take me 20 min to get a post up for whatever reason.

If the 4x4 thing sounds good maybe you could staple the chain link to them (4x4s) with Galvanized staples?

Do our Inspectors have any comment on that?

Bill

[This message has been edited by Bill Addiss (edited 06-26-2003).]

Re: Fence as support ? #85383
06/27/03 06:53 AM
06/27/03 06:53 AM
R
Redsy  Offline OP
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Our traffic lighting, and highway sign conduits are usually fastened to the main support pole with metal banding.
As far as attaching to the bottom of the fence, would UV resistant ty-raps be acceptable.
Can 110.3 be cited in either or both cases described above?

Re: Fence as support ? #85384
06/27/03 07:12 AM
06/27/03 07:12 AM
B
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
Redsy — Might you be able to use Aerosol/"worm" clamps to secure the raceway? They seem fairly corrosion resistant and not too pricey.

Re: Fence as support ? #85385
06/28/03 04:08 PM
06/28/03 04:08 PM
R
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
For the expansion joint(s) to work, whatever type of fastening that is used must allow lengthwise movement of the PVC.
Don


Don(resqcapt19)

Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
renosteinke
renosteinke
Blue Collar Country
Posts: 5,316
Joined: January 2005
Show All Member Profiles 
Top Posters(30 Days)
sparky 23
Admin 20
Potseal 13
Popular Topics(Views)
243,527 Are you busy
180,329 Re: Forum
170,821 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.027s Queries: 14 (0.004s) Memory: 1.0083 MB (Peak: 1.1829 MB) Zlib enabled. Server Time: 2018-01-17 21:48:11 UTC