ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
New tool
by gfretwell - 10/22/20 12:08 PM
Where is Everyone?
by Bill Addiss - 10/17/20 07:04 PM
Beyond Belief
by gfretwell - 09/27/20 12:03 AM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 16 guests, and 16 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
300-5d #79199 12/03/01 04:49 PM
Joined: Dec 2001
Posts: 4
S
Scott Yeazell Offline OP
Junior Member
Do underground service entrance conductors installed by directional boring method rather than trenching require a warning ribbon?

2017 / 2014 NEC & Related Books and Study Guides
Re: 300-5d #79200 12/03/01 05:06 PM
Joined: Nov 2000
Posts: 2,148
R
resqcapt19 Offline
Member
Yes. There were proposals made to provide such an exemption, but they were rejected. The chances of damage from future excavation do not change just because you used a closed rather than open excavation method for the installation. If you want to bore you will have to do it twice, one for the cable and one for the ribbon.
Don(resqcapt19)


Don(resqcapt19)
Re: 300-5d #79201 12/04/01 09:12 PM
Joined: Nov 2000
Posts: 2,148
R
resqcapt19 Offline
Member
As the result of a follow up question to me from Scott on this subject via e-mail I did some additional research. My original post is not entirely correct.
A proposal was submitted to the NFPA for a change in 300-5(d) for the 2002 code. This was proposal 3-43. The proposal asked that the following wording be added to 300-5(d): "Horizontally bored service laterals shall be exempt from this requirement." Code Making Panel 3 rejected the proposal with the statement that; "Present language only addresses trenching, not boring, thus boring is already excluded from the ribbon requirement".
This indicates to me that the panel did not intend to require a ribbon above cables that were installed by boring. It aprears to me, that based on the panel comment, if you are operating under the 99 code, a ribbon would not be required for conductors installed by boring. Also note the new wording applies to all underground service conductors, not just service laterals as in the 99 code.
Don(resqcapt19)

[This message has been edited by resqcapt19 (edited 12-05-2001).]


Don(resqcapt19)
Re: 300-5d #79202 12/06/01 09:14 PM
Joined: Aug 2001
Posts: 599
N
Nick Offline
Member
Quote
The chances of damage from future excavation do not change just because you used a closed rather than open excavation method for the installation.
I agree with this statement more than the panels findings.


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

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

 

Member Spotlight
BEAMEUP
BEAMEUP
WA
Posts: 27
Joined: December 2004
Show All Member Profiles 
Top Posters(30 Days)
BigB 3
Popular Topics(Views)
270,742 Are you busy
204,967 Re: Forum
193,085 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3