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Topic Title: Lugs on 1 gang steel socket boxes.
Topic Summary: Why four?
Created On: 22 March 2019 03:20 pm
Status: Read Only
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 22 March 2019 03:20 pm
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mikejumper

Posts: 2810
Joined: 14 December 2006

I've never used the top and bottom screw lugs on 1 gang steel socket boxes, does anyone know why we have them? Is it just a legacy from the past? They are a nuisance when wiring busy FCU's.
 22 March 2019 03:44 pm
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dustydazzler

Posts: 3068
Joined: 19 January 2016

9 times out of 10 I simply pound the top and bottom lugs flat with a beater screwdriver and hammer....
 22 March 2019 03:47 pm
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daveparry1

Posts: 8020
Joined: 04 July 2007

I think it's just a left over from those old sockets that had top and bottom fixing screws,I often bend them back out of the way, same when fitting fcu's.
 22 March 2019 04:21 pm
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mapj1

Posts: 12039
Joined: 22 July 2004

The glib answer is the hole pattern is fixed in the BS document.

sketch of BS4622 dimensions here

But it can be useful, some boxes have different knock out patterns on the sides, either 2 20mm holes or one central one, and turning the box 90 degrees allows you to use the other pattern if the wiring comes in non-central.

Also, when some clown has stripped the threads by fitting a woodscrew, you can refit the socket sideways, happy it will be well fixed...

But yes, when I was younger all the then "new" 13A sockets had the mounting holes top and bottom, it was later (Mid 1970s -80-ish probably) they became side to side (and the early double sockets had 4 holes, 2 top. 2 bottom.) At about that time we invested in an m3.5 hole 'rethreader' basically a tap on a screwdriver handle, so the old 5BA holes could be re-tapped metric, and new fitttings put on the older boxes.
The few original sockets left in my 1970 built house are of the old style, and electrically going strong, if now a bit yellow
This sort.

courtesty of the flamport website for the pic.

-------------------------
regards Mike


Edited: 22 March 2019 at 04:31 pm by mapj1
 23 March 2019 10:44 am
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mikejumper

Posts: 2810
Joined: 14 December 2006

Originally posted by: dustydazzler
....9 times out of 10 I simply pound the top and bottom lugs flat with a beater screwdriver and hammer....

What's a beater screwdriver?
Am I missing something from my toolkit?
 23 March 2019 11:33 am
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dustydazzler

Posts: 3068
Joined: 19 January 2016

Originally posted by: mikejumper

Originally posted by: dustydazzler

....9 times out of 10 I simply pound the top and bottom lugs flat with a beater screwdriver and hammer....


What's a beater screwdriver?

Am I missing something from my toolkit?


http://www.youtube.com/watch?v=up2wxLGR_j0
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