SWA glanding

[woodysparks]

i have a question, i have inherited a site where new lateral swa has been installed, at the distribution end (ryefield board)the swa has been terminated into trunking and bonded via banjos and onto a main earth terminal, which im satisfied with, However at the tenants end the there is nowhere to terminate the swa within a mantel system, the swa has been brought into the mantel and grometed where the metal had been drilled, then the swa was stripped and made off without a gland and the 3 cores were heat shrunk to achieve double insulation to feed the meter and main earth terminal, and finaly the swa has been cleated to the back of the mantel so the cable does not move.
looking at the way the job has been installed it is not unsafe nor it does not breach any regulations.

i have now been asked to respond to the client with the relavent regulations that make this conform does anyone have any comments ?

 

[telectrix]

looks like the SWAarmour has been earthed at supply end ( as it must) but not used to as an earth. if the earth conductor in the cable is adequate, then i can't see a problem.

 

[malcolmsanford]

Well I would say that an unglanded SWA contravenes reg 522.8.1, 526.1 526.5 and 134.1.1

 

[sparkydude]

Does heatshrink meet the regulations for double insulation ??? I would have thought personally that it would not be of adequate thickness to be classed as double insulation.

Nick

 

[sparks1234]

I cant see a problem with it at all, if you are installing a TT system would you gland it?

 

[Engineer54]

On the heatshrink side of things, as all heatshrink is normally XLPE based, i'd be happy allowing the heatshrink forming the double insulation layer... As for the unglanded SWA, ...i'd prefer to see the cable glanded off with a propriety made termination that does not require being glanded off to a metal enclosure. However if we are talking about the in-wall type meter enclosures that were popular in the 50 and 60s then there is no reason that i can see, why the SWA couldn't have been glanded to these enclosures...

 

[sparks1234]

When we do a TT system we normally put it through a stuffing gland so it looks better

 

[Engineer54]

Sorry, but i didn't see anything in the OP that mentioned anything about these tenants being on a TT system!!

 

[mogga]

personaly I prefer SWAS glanded both ends You can get gland plates Brass L shaped for fixing to wall ect

 

[sparks1234]

It was only to show how we use an armour without physically connecting the sheath, typically as you would see in a TT system when divorcing the earth. I wasnt suggesting it was a TT system, sorry for confusion