ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Any women electricians here?
by gfretwell - 01/17/22 01:44 PM
12 Lead Motor Connection Weird
by Elektrik - 01/12/22 11:09 PM
Well There's your problem.
by gfretwell - 01/08/22 12:17 AM
Happy New Year!!
by HotLine1 - 01/04/22 09:50 AM
Sangamo s309.2
by Robski - 12/31/21 04:54 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 51 guests, and 13 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Joined: Aug 2014
Posts: 4
A
New Member
Has anybody experience of open-air wiring works at winter time in Arctic? Need some advise...

Joined: Mar 2004
Posts: 947
T
twh Offline
Member
There are lots of cold places in US and Canada. Any questions in particular?

Joined: Jun 2004
Posts: 1,273
T
Member
In my humble opinion, there is nothing I could explain to a Russian about the Arctic that he doesn't know even better than I.

I'm probably hardly alone in such sentiments, hence the lack of replies.


Tesla
Joined: Aug 2014
Posts: 4
A
New Member
Originally Posted by twh
There are lots of cold places in US and Canada. Any questions in particular?


Yes! I do have specific questions! smile

Of course, we in Russia have experience in arctic projects, however... perhaps there are some techniques which we're simply nor aware of.

Major problem in cabling works is quite a limited period for open-air installations - eventually 1-1,5 months, as soon as nearly all types of cables allow bending at +5oC and above, whilst thousands of kilometers should be installed on the open racks at heights, during at least 7-8 months.

I'm not aware of any other techniques of working at low temperatures than:
- unwinding cable rolls in heated temporary shelters;
- making long-range tents (tonnels) from Al-laminated plastic film around cable trays. The latter is very costly and labour-taking...;
- hot air-blowing from air guns along the cable tray at certain distance.

Anything else?

Perhaps there are some special cable marks/brands/types? Please advise...

Joined: Jul 2007
Posts: 1,335
S
Member
What voltage will you be working at?


"Live Awesome!" - Kevin Carosa
Joined: Aug 2014
Posts: 4
A
New Member
Sorry for delay - 24 V DC (controls), 220 V AC, 380 V AC (power mains)

Joined: Jul 2007
Posts: 1,335
S
Member
Take a look at this

Ultraflex Blue


"Live Awesome!" - Kevin Carosa
Joined: Oct 2000
Posts: 2,722
Broom Pusher and
Member
We have used "FREP Cable" for connecting Power (Branch Circuitry) and Control Circuitry drops to Evaporators in -40C environments, where XHHW Insulated Conductors installed in LFMC and LFNMC experienced rapid failure.

I do not remember the Company we ordered this Cable from, but try a Google Search for "FREP Cable".
("FREP" being an Acronym for the Cable Jacket & Conductor Insulation material)

The Cable we purchased had a flexibility rating down to -60C (flexible without cracking), which the Temperature is, by all means, best referred to as:
"Beyond Frikken Cold!!!"
shocked blink

Good luck.

--Scott (EE)


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
Joined: Aug 2014
Posts: 4
A
New Member
OK, thanks! Last questions: You just pulled both cable types with rolls or manually? Was there any pre-heating for cable drums?

Joined: Mar 2004
Posts: 947
T
twh Offline
Member
I wonder if some information can flow in the other direction.

I work in a place where we get below -30c only a couple weeks per year and hit -40c/-40F only for a day or two. Those are the worst days of my life.

Do you have any tips for clothing? How about fire retardant clothing that needs to "breathe"?

In my younger days, my hands would heal from the cracking in a couple days. Now, it takes a week. What do your "old guys" use for bleeding hands?

Page 1 of 2 1 2

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

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

 

Member Spotlight
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 811
Joined: April 2004
Top Posters(30 Days)
NORCAL 3
grich 1
Popular Topics(Views)
287,879 Are you busy
220,049 Re: Forum
206,042 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5