ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
Dimmable LED 2x4 lay in fixtures
by HotLine1. 04/24/17 05:43 PM
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
How do you find a good employee?
by HotLine1. 04/22/17 10:44 AM
Electrode boilers question
by SteveFehr. 04/21/17 08:32 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,715 Are you busy
169,462 Re: Forum
162,767 Need opinion
Who's Online Now
0 registered members (), 42 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
Page 1 of 2 1 2
#199271 - 02/18/11 05:46 PM Lashing together jumpers with nylon rope  
wewire2  Offline
Member
Joined: Nov 2002
Posts: 244
California
what's with the sticker in pull sections and gutters that require you to lash the jumpers together with nylon rope?
Isn't that considered a fire hazard? I would post a photo
of the sticker but I'm not sure about copyright infringement.


Work Gear for Electricians and the Trades

#199272 - 02/18/11 06:34 PM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,809
Brick, NJ USA
Copyright should not be an issue, but I'm another Sparky...not a lawyer.

I'll take a shot....lashing conductors to prevent 'whipping' in the event of a fault?



John

#199273 - 02/18/11 07:09 PM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
I think Hotline has it. the higher the fault current the higher the electro - motive forces involved. It is important to brace conductors inside splitters and gutters against the mechanical damage and potential electrical damage in high current faults. Small wires are often self limiting in the fault current they can conduct but as the wire size increases so does the current and associated mechanical forces.
I have never seen these labels.


#199278 - 02/19/11 01:34 AM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,809
Brick, NJ USA
I have a video from Bussmann (Safety Basics) and there are a few 'demo' faults with conductors whipping. And, I seem to remember a few of the 'old timers' would lash conductors, either out of habit, or perhaps pride. Dome was really works of art!



John

#199279 - 02/19/11 01:49 AM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
wewire2  Offline
Member
Joined: Nov 2002
Posts: 244
California
Reminds me of the movies where an electrical wire shorts out. The wire does a snake dance every time.


#199282 - 02/19/11 09:25 AM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,211
SI,New Zealand
You guys are using nylon rope to try and negate the electro-motive forces under fault conditions?
Over here you are required to clamp wires and cables with saddles (over a certain size, of course).
Pretty much you are wasting your time with either rope or saddles.
Fault currents and their effects are something that is little understood by both designers and electricians.
If you've ever seen a HV cable snake around after a fault down-stream, you'll know what I'm on about.



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

#199289 - 02/19/11 01:40 PM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,393
Vienna, Austria
Regarding Copyright issues: I'm not a lawyer, but from what I've read from both US and European sources, if you take a picture of something, you hold the copyright to the picture, and no one else. There are only two limitations: a) the owner of the premises where you stand while taking the picture can tell you not to take any pictures and b) if you take pictures of any people they have to consent before you publish the picture. In some countries there are particular laws concerning publically displayed works of art (e.g. statues in the street) but I haven't heard of something like that in the US, and a sticker in a piece of electric equipment can hardly be considered artwork.


#199314 - 02/20/11 02:10 AM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
wewire2  Offline
Member
Joined: Nov 2002
Posts: 244
California
Here's a photo of the sticker.


Attached Files
Beeline.jpg (61 downloads)
Beeline Sticker

#199319 - 02/20/11 11:42 AM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,809
Brick, NJ USA
IMHO, I stay with my original comment above, but someone may have a better reason.

'Beeline' seems to remind me of a manufacturer from the past?



John

#199320 - 02/20/11 11:51 AM Re: Lashing together jumpers with nylon rope [Re: wewire2]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,809
Brick, NJ USA
'Beeline' is now within the Cooper group, thanks to Google.

Website has an issue when I was hunting to see if there is any current info. Time permitting, I'll get back later.



John

Page 1 of 2 1 2

Member Spotlight
noderaser
noderaser
Portland, Oregon, United States
Posts: 404
Joined: March 2007
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.015s Queries: 17 (0.003s) Memory: 0.8197 MB (Peak: 1.0044 MB) Zlib enabled. Server Time: 2017-04-26 10:00:07 UTC