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Topic Title: Pvc conduit box
Topic Summary: Termination
Created On: 02 January 2018 10:09 AM
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 02 January 2018 10:09 AM
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Baldyhugh

Posts: 373
Joined: 01 June 2007

Happy new year all

I was reading a post in a forum from another site this morning which suggested that conduit boxes in a conduit installation should not be used to house terminations but are solely to be used for drawing in and inspection of cables. I have been using them for many years on pvc conduit jobs joining 1.5 singles to a flex outlet to light fittings for example but also other uses where a termination was required. i know that pvc adaptable boxes could also be used in these examples but a conduit box does the same job. What's your views on this?

Thanks
 02 January 2018 10:37 AM
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Blencathra

Posts: 124
Joined: 07 November 2017

Klik roses are designed for mounting on conduit boxes, which forum was it?
 02 January 2018 10:40 AM
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tomgunn

Posts: 4027
Joined: 25 May 2005

Well, theres a thing! I have been doing just that, when required, for many decades... my guess is that some clever spark, (no pun intended!!), wil come up with some obscure reg that states quite clearly that I am wrong... but thats the beauty of forums!

I would guess that the main thing about this is that it is accessible or used in conjunction with terms that are suitable for it's location.

regards

-------------------------
Tom.... (The TERMINATOR).

handyTRADESMAN

Castle Builders
 02 January 2018 10:40 AM
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dustydazzler

Posts: 1959
Joined: 19 January 2016

As above

Klik roses are made to mount on to round conduit boxes
 02 January 2018 11:03 AM
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Baldyhugh

Posts: 373
Joined: 01 June 2007

Thanks all

Yes I know plug in ceiling roses or klic's are made for mounting on conduit boxes and I have used them in the past but when joining cables generally my question however remains, are conduit boxes an acceptable enclosure for terminations whether in a strip connector or wagos for example? It is enclosed when the lid is on and can only be accessed with a screwdriver (hence tool) so I don't see the problem but this post that I read on electricians forums I think it was has got me wondering
 02 January 2018 11:19 AM
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dustydazzler

Posts: 1959
Joined: 19 January 2016

Perfectly acceptable imo to have lever wagos in a round conduit box under a screwed lid. If say a light point has been completely removed.
You very often see this in older office blocks and shops. Loads of jointed cables in boxes.
In a perfect world you would pull out the redundancy wiring or re route so that there is no joins.
But 99.99% of jobs don't exist in the perfect world
 02 January 2018 11:39 AM
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Baldyhugh

Posts: 373
Joined: 01 June 2007

Hi dustydazzler

I would be using these on new work and the klic's don't really suit so I opt for pvc tee box with conduit in left and right with a trs gland screwed into a female adaptor with a short length of conduit into the bottom exit of the box. All topped off with a rubber lid gasket and lid. Connections made inside with standard strip connectors. I have tried adaptable boxes and wiska boxes which are suitable to house connections but find that the standard conduit box is quick and easy to use seeing as the conduit entry is already made. My concern was as I said earlier was that if the conduit box was considered a suitable enclosure for terminations. I always assumed that it was.

Thanks
 02 January 2018 11:50 AM
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dustydazzler

Posts: 1959
Joined: 19 January 2016

If it meets the relevant IP ratings which by sounds it will , then jobs a goodan imo

A box is a box
 02 January 2018 12:26 PM
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Baldyhugh

Posts: 373
Joined: 01 June 2007

Hi

It's in an agricultural installation where ip44 is specified. As such I solvent weld all conduit joints into the conduit boxes, fit a trs gland to the flex outlet and fit a rubber lid gasket. I have compared these to ip44 rated adaptable boxes on the market and this would be comparable but yes I agree a box is a box. Conduit boxes are described by some wholesalers as draw in boxes which made me think that by defination they could only be used for just that rather than housing terminations.
Thanks for your interest in this post
 02 January 2018 07:54 PM
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Weirdbeard2

Posts: 295
Joined: 29 November 2017

Originally posted by: dustydazzler

If it meets the relevant IP ratings which by sounds it will , then jobs a goodan imo



A box is a box


Agreed, there was a fairly recent discussion here regarding joints in conduit boxes, but it was regards EX rated:

http://www.theiet.org/forums/f...tid=205&threadid=59335
 02 January 2018 08:28 PM
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mapj1

Posts: 10411
Joined: 22 July 2004

No problem to put joints in a conduit box or a socket back box or indeed any other container not sold with the label 'junction box', other than if you have more than a couple of joints it will get rather tight, and maybe a bigger box is better.
Normal rules about access, not stuffing it too tight and IP ratings still apply, but at the end of the day it is just an example of a small box.

-------------------------
regards Mike
 02 January 2018 09:15 PM
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Baldyhugh

Posts: 373
Joined: 01 June 2007

Thanks for your replies.

It's as I presumed/hoped was the case as I have been using conduit boxes for housing terminations for years but the posting I mentioned earlier got me wondering if conduit boxes were solely for drawing in cables. I couldn't see why they shouldn't as they are enclosed and require a tool to access them but that's the problem with forums, the one opinion that differs from your own sets the mind wandering. Anyway thanks again, top advice/opinions as usual.
 03 January 2018 10:38 AM
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aligarjon

Posts: 3931
Joined: 09 September 2005

End boxes are sometimes sold/labelled as terminal boxes so i don't see a problem. It could be problematic if you need to pull more cables through the thru boxes or tees i suppose.

Gary

-------------------------
Specialised Subject. The Bleedin Obvious. John Cleese
 03 January 2018 12:58 PM
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leckie

Posts: 4649
Joined: 21 November 2008

Well you shouldn't be trying to pull in cables into a conduit system that is existing, not that I haven't heard of such practice

I suspect that the person with the objection has read somewhere about not having conductors joined within a containment system. This would normally refer to trunking systems. The difference is that a trunking system would normally be suitable to have cables added at a later stage subject to space factor. You don't really want to be fitting cables and moving a conductor joined into a connector. However if the cables to be joined were brought into an adaptable box or conduit box on the side of the trunking there would be no problem. So a misinterpretation would be my guess.
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