Found during fault finding

kenny maccuish · Sep 3, 2019

Thanks for all your replies. I knew it was pretty poor but now I have some additional input to confirm that.

WallaceP · Sep 3, 2019

davesparks said:
No that method is not acceptable, I've seen different variations on that theme with some people bringing a few strands through a normal SWA gland, they are all incorrect.
[automerge]1567533292[/automerge]

That's not strictly true, there are different types of glands and methods of terminating SWA. Apart from the standard glands there are various hazardous area glands, top hat glands for the larger sizes or specialist lamppost glands. Then there's range of heatshrink based terminations for specialist applications andof course cast resin terminations.

do you have links for these other glands? i have seen the tophat style before but for 33kV i believe. the others ones when i searched didnt really show me much more than standard gland packs.

Strima · Sep 3, 2019

davesparks said:
On another note what's with the insulation colours in that SWA? How long has it been available with brown, blue and G/Y and does that actually comply with the British standard?

Had some of that on a job a few years ago, the customer specced it so we had to source it from our suppliers, TBH it did cost a few quid more as not many people use it. Still standard SWA with the relevant BS number.

davesparks · Sep 3, 2019

Risteard said:
It's common to have those colours in the south of Ireland.

What you need to remember is that remarking conductors of different colours is a prohibited practice under the ETCI National Rules for Electrical Installations. So three core SWAs are available in single phase colours.

That must get pretty annoying then, do you have to order specific combinations of core colours to suit every cable run? If you need to run L, S/L, N and E do you have to use cable with two browns in it?

How do you deal with multicore cables for controls or multiple circuits? For example where its not possible to install conduit/trunking I use 12 core SWA to take 6 circuits to a standard stage lighting bar, 19 core for a 8 circuits etc, would this not be allowed and you have to run seperate cables?

Risteard · Sep 3, 2019

davesparks said:
That must get pretty annoying then, do you have to order specific combinations of core colours to suit every cable run? If you need to run L, S/L, N and E do you have to use cable with two browns in it?

How do you deal with multicore cables for controls or multiple circuits? For example where its not possible to install conduit/trunking I use 12 core SWA to take 6 circuits to a standard stage lighting bar, 19 core for a 8 circuits etc, would this not be allowed and you have to run seperate cables?

As for your first question you could use brown, black, blue and green/yellow, with heatshrink sleeving on the black (assuming this is on L1 or L of a single phase supply) of brown.

As mentioned RE: 12 core SWA etc. that cables of 7 cores and greater are exempted from this Rule.

Sintra · Sep 3, 2019

Another cable always used in Ireland is pvc/pvc twin brown for switch drops and strappers etc. rather than using a T&E and sleeving the blue. I’ve never really understood why it is not readily available in mainland GB.

buzzlightyear · Sep 3, 2019

Sintra said:
pvc/pvc twin brown for switch drops

It depens on the wholesalers if they sell it or. and the price .my whole salers would frown if you ask for that in is place you got what you are given.
[automerge]1567542074[/automerge]
Wait till we are out of EU ,red is the new brown.

davesparks · Sep 3, 2019

WallaceP said:
do you have links for these other glands? i have seen the tophat style before but for 33kV i believe. the others ones when i searched didnt really show me much more than standard gland packs.

Top hat glands will be supplied with some switchgear for the biggest sizes of cables.

Various street lighting equipment is available, such as this cutout

[ElectriciansForums.net] Found during fault finding

WallaceP · Sep 3, 2019

Sintra said:
Another cable always used in Ireland is pvc/pvc twin brown for switch drops and strappers etc. rather than using a T&E and sleeving the blue. I’ve never really understood why it is not readily available in mainland GB.

what do your use for 3 core and earth? ie unswitched, switched and neutral
[automerge]1567542370[/automerge]

davesparks said:
Top hat glands will be supplied with some switchgear for the biggest sizes of cables.

Various street lighting equipment is available, such as this cutout
View attachment 51872

ah, so the ones for lamppost cutouts are just smaller top hats?

davesparks · Sep 3, 2019

WallaceP said:
ah, so the ones for lamppost cutouts are just smaller top hats?

Some of them are yes, I'm sure I've seen other types but I can't find them at the moment

Sintra · Sep 3, 2019

WallaceP said:
what do your use for 3 core and earth? ie unswitched, switched and neutral

Generally wouldn’t use a 6243 cable. It would normally be a 6242 along with a separate 6421.

Des 56 · Sep 4, 2019

Sintra said:
Another cable always used in Ireland is pvc/pvc twin brown for switch drops and strappers etc. rather than using a T&E and sleeving the blue. I’ve never really understood why it is not readily available in mainland GB.

I have heard that comment made quite a few times over the years
Not sure if there may be a regional aspect to its availability

,though I doubt it very much

I personally have installed thousands of metres of twin brown over the years,I have never found a problem sourcing it locally
Its been the minority of occasions when I have used Brown/Blue with over sleeving and never because Brown/Brown was not available

Found during fault finding

kenny maccuish

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WallaceP

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Strima

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davesparks

Risteard

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Sintra

buzzlightyear

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davesparks

WallaceP

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davesparks

Sintra

Des 56

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