IET logo
 
IET
Decrease font size
Increase font size
Topic Title: decking cabling
Topic Summary:
Created On: 15 May 2013 10:56 AM
Status: Post and Reply
Linear : Threading : Single : Branch
Search Topic Search Topic
Topic Tools Topic Tools
View similar topics View similar topics
View topic in raw text format. Print this topic.
 15 May 2013 10:56 AM
User is offline View Users Profile Print this message



goldenboy1818

Posts: 476
Joined: 22 February 2011

Would you all run armoured under decking to spotlights and just flex out of a adaptable box to each light ?
 15 May 2013 11:13 AM
User is offline View Users Profile Print this message



AJJewsbury

Posts: 11379
Joined: 13 August 2003

Sounds reasonable, certainly if the supply cable had to go underground (or loose under the decking?) I'd use SWA. If it was just looping between adaptable boxes above ground and was clipped up out of harm's way I might think of something like HiTuf or NYY-J.
- Andy.
 15 May 2013 11:20 AM
User is offline View Users Profile Print this message



goldenboy1818

Posts: 476
Joined: 22 February 2011

yes will be clipped up but decking only a few inches of the ground. What is hituf or nyy. I noticed they do like pond flex but didn't thibk that would be suitable ??
 15 May 2013 11:30 AM
User is offline View Users Profile Print this message



AJJewsbury

Posts: 11379
Joined: 13 August 2003

What is hituf or nyy

Basically round, solid-core, cables with an extra black oversheath so they're resistant to UV and so suitable for outdoors - but not armoured, so easier to work with & gland off using just stuffing glands.

Try: http://www.eland.co.uk/electri...ble69/nyy-j-cable.html and http://www.drakauk.com/product...l_cables/special1.php

- Andy.
 15 May 2013 11:32 AM
User is online View Users Profile Print this message


Avatar for OMS.
OMS

Posts: 19621
Joined: 23 March 2004

It's under decking - what risk to you think is present.

For me it would be:

1 - Vermin - furry things love decking a few inches above the ground, it's like bulding an hotel as far as they are concerned

2 - Moisture and agressive chemicals from people cleaning decking

3 - Penetration damage - peolle just love to poke things through gaps in decking

4 - Basic consideratopns of the external environment in addition to the above.

RCD protection and either of the cables Andy suggested would be a realistic alternative to swa. You could also consider CY flexible.

Or do what a neighbour of mine did and wire it in T&E

Regards

OMS

-------------------------
Failure is always an option
 15 May 2013 01:46 PM
User is offline View Users Profile Print this message



MrP

Posts: 836
Joined: 24 March 2006

As per OMS list it gets a little grim under the decking and Mickey mouse and his mates just love plastic.

Did a decking and water feature couple of years ago used a small SWA to a AD gal box but made the tails long enough to reach the light fitting with the tails passing through the AD box direct to the light fitting via 16mm gal flexible conduit, terminating in the light fitting with no joints at the AD box effectively using the AD box as a marshalling box.

All terminations accessible via the fittings no risk of ingress of water or high resistance joints in the AD box as no joints
Good luck buddy I can smell the pork on the Barbie with a nice glass of red.

MrP the tunnel is dug escape committee selected medical and new passport sorted
 16 May 2013 11:50 AM
User is offline View Users Profile Print this message



goldenboy1818

Posts: 476
Joined: 22 February 2011

cy cable has to have special glands doesnt it you can not use stuffing glands ?. The hi tuff sounds good as it can be put in just using a stuffing gland and obviously saving a lot of time
 16 May 2013 12:28 PM
User is offline View Users Profile Print this message



AJJewsbury

Posts: 11379
Joined: 13 August 2003

cy cable has to have special glands doesnt it you can not use stuffing glands ?

You might be thinking of SY (steel braid between two sheaths) rather than CY (copper braid under a single sheath). I suspect that CY is usually just 'pigtailed'.
- Andy.
 16 May 2013 12:46 PM
User is offline View Users Profile Print this message



Ricicle

Posts: 836
Joined: 23 October 2006

Will Hituf resist rodent teeth ?

-------------------------
Empty barrels make the most noise.
 16 May 2013 12:54 PM
User is offline View Users Profile Print this message



AJJewsbury

Posts: 11379
Joined: 13 August 2003

Will Hituf resist rodent teeth ?

I'd imagine it is at least as tough as the outer sheath of SWA cable (which you'd want to keep intact to prevent the armour from corroding and water out of the joints).
- Andy.
 16 May 2013 07:45 PM
User is offline View Users Profile Print this message



goldenboy1818

Posts: 476
Joined: 22 February 2011

I think hi tuff is definitely the best choice here. speed of termination(stuffing glands) and still durable enough ?
 16 May 2013 09:05 PM
User is offline View Users Profile Print this message


Avatar for slittle.
slittle

Posts: 3487
Joined: 22 November 2007

No Hi-tuf won't resist my teeth :-)

Nor will Firetuf but my brothers and cousins don't seem to like the flavours it comes in........

Stu
 17 May 2013 04:04 PM
User is offline View Users Profile Print this message


Avatar for OldSparky.
OldSparky

Posts: 592
Joined: 28 June 2011

Originally posted by: OMS

It's under decking - what risk to you think is present.



For me it would be:



1 - Vermin - furry things love decking a few inches above the ground, it's like bulding an hotel as far as they are concerned



2 - Moisture and agressive chemicals from people cleaning decking



3 - Penetration damage - peolle just love to poke things through gaps in decking



4 - Basic consideratopns of the external environment in addition to the above.



RCD protection and either of the cables Andy suggested would be a realistic alternative to swa. You could also consider CY flexible.



Or do what a neighbour of mine did and wire it in T&E



Regards



OMS



oh dear mine is done in flex !!
 17 May 2013 06:12 PM
User is offline View Users Profile Print this message


Avatar for colinhaggett.
colinhaggett

Posts: 362
Joined: 08 July 2004

I always try to use LED lights with remote driver rather than direct mains. Seems to me that is long as the cable is clipped out of the way it doesn't get chewed. Nearly all the vermin damage I see is in loft spaces! Yep guilty of using blue artic cable on decking lights.
Statistics

See Also:



FuseTalk Standard Edition v3.2 - © 1999-2014 FuseTalk Inc. All rights reserved.