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Lashing together jumpers with nylon rope #199271
02/18/11 05:46 PM
02/18/11 05:46 PM
W
wewire2  Offline OP
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
Re: Lashing together jumpers with nylon rope [Re: wewire2] #199272
02/18/11 06:34 PM
02/18/11 06:34 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,024
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
Re: Lashing together jumpers with nylon rope [Re: wewire2] #199273
02/18/11 07:09 PM
02/18/11 07:09 PM
M
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.

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

Member
Joined: Apr 2002
Posts: 7,024
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
Re: Lashing together jumpers with nylon rope [Re: wewire2] #199279
02/19/11 01:49 AM
02/19/11 01:49 AM
W
wewire2  Offline OP
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.

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

Member
Joined: Jul 2002
Posts: 8,247
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.


Re: Lashing together jumpers with nylon rope [Re: wewire2] #199289
02/19/11 01:40 PM
02/19/11 01:40 PM
T
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,428
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.

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


Attached Files
Beeline.jpg (61 downloads)
Beeline Sticker
Re: Lashing together jumpers with nylon rope [Re: wewire2] #199319
02/20/11 11:42 AM
02/20/11 11:42 AM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,024
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
Re: Lashing together jumpers with nylon rope [Re: wewire2] #199320
02/20/11 11:51 AM
02/20/11 11:51 AM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,024
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
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