ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Photocell
by Docholiday. 01/22/18 10:52 AM
AreMetal Ladders Ever OK For Electrical Work?
by gfretwell. 01/22/18 01:15 AM
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 14 guests, and 15 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Underground Conduit Handholes #210912
08/21/13 01:47 PM
08/21/13 01:47 PM
C
cgw  Offline OP
Member
Joined: Jul 2004
Posts: 133
Rochester NY
If we install a underground conduit (say 3") between buildings (say 600 feet-ish or more) for fiber. For straight runs how far should handholes be spaced for pulling?

Work Gear for Electricians and the Trades
Re: Underground Conduit Handholes [Re: cgw] #210913
08/21/13 07:09 PM
08/21/13 07:09 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,918
Brick, NJ USA
A few considerations:
Fiber mfg specs for pull tension?
Pulling equipment limitations?
Pull rope length?

600' straight may be 'one shot' pull.



John
Re: Underground Conduit Handholes [Re: cgw] #210942
08/27/13 11:23 AM
08/27/13 11:23 AM
S
sabrown  Offline
Member
Joined: Dec 2002
Posts: 302
Ogden, Utah, USA
EIA/TIA documents and specificaions likely have something to say about this. Other things to consider:

How many different cables with fiber?

Are they in innerduct? Pulling innerduct would limit distances. Some pre-terminated cables come in innerduct as part of the assembly.

Are they gopher rated cables being pulled in? Gopher rated means shielding against burrowing critters. Makes them harder to pull, but may increase allowed pulling tensions.

Is conduit sizing based on future pulls possible/likely?
Do the specs, manufacturer, or EIA/TIA allow soap? Soap is another name for a lubricant that eases pulling of cable.

For pulling refer also to BICSI ITSIM, Ch. 4, "Pulling Cable."

I am sorry that my memory is not as good as it used to be, years ago I helped with some revisions to the EIA/TIA documents, but I have forgotten more than I have ever learned.

Shnae

Re: Underground Conduit Handholes [Re: cgw] #210943
08/27/13 11:23 AM
08/27/13 11:23 AM
S
sabrown  Offline
Member
Joined: Dec 2002
Posts: 302
Ogden, Utah, USA
I can't even remember how to spell my name.

Shane


Featured:

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

 

Member Spotlight
CDS
CDS
Nicholson Ga
Posts: 34
Joined: June 2006
Show All Member Profiles 
Top Posters(30 Days)
Admin 21
Potseal 15
sparky 15
Popular Topics(Views)
243,595 Are you busy
180,393 Re: Forum
170,862 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.017s Queries: 15 (0.004s) Memory: 0.9591 MB (Peak: 1.0927 MB) Zlib enabled. Server Time: 2018-01-22 18:14:51 UTC