Electrical2Go - Online Electrical Supplier
This official sponsor may provide discounts for members

Discuss 6381Y PVC in the Electrical Forum area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

Hey, has anyone used 6381Y PVC double insulated flexible tails for meter tails? Personal I have only used 6181Y Double insulated tails before but I seen them in a catalog and thought the flexible tails could be handy. Only seems to come in double blue or double grey tho, well in this CEF catalog anyway.
 
Instyle LED Lighting Specialists UK
This official sponsor may provide discounts for members

davesparks

-
Mentor
Arms
Esteemed
I've never seen that cable used for tails, I use 19 strand tails as they are now more commonly available,i think that's 6181yh.

6381Y looks like fine stranded flex so will need ferrules fitted and won't be accepted by some meter operators for connection to their meter.
 

Pete999

-
Arms
Esteemed
Hey, has anyone used 6381Y PVC double insulated flexible tails for meter tails? Personal I have only used 6181Y Double insulated tails before but I seen them in a catalog and thought the flexible tails could be handy. Only seems to come in double blue or double grey tho, well in this CEF catalog anyway.
That cable is not DOUBLE INSULATED, Wallace it s insulated with a Mechanical Outer sheath the same as the Twin and Earth cable used house wiring, have you ever seen the Double Insulated square within a square on consumers unit tails?
 
  • Thread Starter Thread Starter
  • #6
That cable is not DOUBLE INSULATED, Wallace it s insulated with a Mechanical Outer sheath the same as the Twin and Earth cable used house wiring, have you ever seen the Double Insulated square within a square on consumers unit tails?
I guess you are technically correct but this is a fairly common term for this cable. To save any regional confusion over terms, I gave the code also. Sorry you seem to struggle with the difference between common terms and technical terms it must make your life a lot harder than it could be trying to prove yourself.
 

Pete999

-
Arms
Esteemed
I guess you are technically correct but this is a fairly common term for this cable. To save any regional confusion over terms, I gave the code also. Sorry you seem to struggle with the difference between common terms and technical terms it must make your life a lot harder than it could be trying to prove yourself.
No not really, especially when, I am correct.
 

Pete999

-
Arms
Esteemed
View attachment 52389🤔 Best call them up, could be an opportunity for a new proof reader coming up soon.
Someone else who has got it wrong then, still we can't all be perfrct can we? from CEF well say np more, blimey Wallace you certainly have got a Bee in your Bonnet haven't you?
 

telectrix

-
Mentor
Arms
Esteemed
we used to refer as double insulated, same as we said ring main. both terms now incorrect. same as what we used to call an earth wire is now a cpc. current terms are technically correct. just wish we'd stuck to inches and real measurements. sick of getting as dual tape measure out to convert mm into inches.
 

Strima

-
Arms
Esteemed
Just had three days running in 700m of that stuff in a BT exchange in overhead containment. 35mm is delightful to work with when you're 3m up a step ladder trying to reach over the existing baskets and not damage any fibre optics... 🤣

And no, I wouldn't use it for meter tails as you will need to use ferrules and, as Dave has mentioned, it's doubtful the suppliers would be happy with that. TBH technically I can't see anything wrong with it but no doubt some meter fitter would burst a blood vessel on seeing that...
 

Simon47

-
Arms
Yes, I've used it - Cleveland Cable sell it in the "right" colours by the metre. It's just soooooo much easier to work with. IMO it should be safer as well since it will put much less mechanical strain on connections.
It was funny though when trying to buy it. CEF only have grey and blue, at another wholesaler the guy just couldn't compute why anyone wouldn't just use 6181Y as "that's what everyone uses". Found another outfit listing it on their site - but they didn't have all the combinations I needed in stock and only bought in stock if using it for their own internal manufacturing o_O Eventually I found that Cleveland Cable do it.
I also went with tri-rated green/yellow.
As for "but you have to use ferrules". Really ? It takes longer to pop a ferrule on the end than it takes to wrangle 6181Y into shape ?

If a meter fitter said "non" then I'd just ask him to state what regulations say it can't be used, and "until you come up with that, you can darn well get on with your job".

TBH, I've often wondered why 6181Y is even allowed to be used for tails :rolleyes:
 

Dave OCD

-
Mentor
Arms
Esteemed
I'm sure EON [And possibly others] stipulate in their Terms and Conditions that they will only accept the 7 strand tails for connection to metering equipment.
 

Ian1981

-
Mentor
Arms
Esteemed
If the dno only accepted 7 strand meter tails then most of these new builds that have swa installed as the ‘tails’ would have been ripped out by now, so I’d say that they wouldn’t give a monkeys if you used 19 strand
 

davesparks

-
Mentor
Arms
Esteemed
If the dno only accepted 7 strand meter tails then most of these new builds that have swa installed as the ‘tails’ would have been ripped out by now, so I’d say that they wouldn’t give a monkeys if you used 19 strand
Why? Swa cores are 7 strand so will meet that requirement.
 
From my experience... new builds get away with all sorts of things... even basic, fundamental building regs are often not adhered to !
 

Ian1981

-
Mentor
Arms
Esteemed
Why? Swa cores are 7 strand so will meet that requirement.
I was replying to above posts Dave about power suppliers only accepting 7 strand tails as in meter tails and not swa.
To my knowledge they don’t particularly care either way.
 

davesparks

-
Mentor
Arms
Esteemed
I was replying to above posts Dave about power suppliers only accepting 7 strand tails as in meter tails and not swa.
To my knowledge they don’t particularly care either way.
The documents I've read from UKPN, EDF and a couple of others all specify that flexible cables including tri rated are not permitted for connection to their equipment.
 

Simon47

-
Arms
I can see that a DNO might not accept either SWA or tri-rated as neither are double insulated or insulated and sheathed at the meter entry - and thus they'd be within their rights to refuse to connect an installation not to BS7671.
I've had a search for ENWL documents, and found their Electricity Specification 212 which looks like their specifications for connections of the size we're discussing. Nowhere does it specify any restrictions on the load side connections, only specifying "stranded" cables. It does state that connections from the cutout to a single phase meter are normally to be by way of a block rather than cables.
A search for ENWL and 6181Y, 6381Y, or tri-rated doesn't come up with anything for me. I guess it soon will when the search engines borg this thread :rolleyes:

EDIT: I was talking to someone in ENWL only recently and the topic of stranded tails came up. Turns out they've been using them themselves for some large jobs, and annoyingly had to get ferrules for a small number of connections with screw rather than box clamp connections - so it sounds like they put stranded cables directly into box terminals with no ferrule.
 

Strima

-
Arms
Esteemed
EDIT: I was talking to someone in ENWL only recently and the topic of stranded tails came up. Turns out they've been using them themselves for some large jobs, and annoyingly had to get ferrules for a small number of connections with screw rather than box clamp connections - so it sounds like they put stranded cables directly into box terminals with no ferrule.
No ferrules is BTs preferred option when using box terminals.
 

1Justin

-
Arms
Can I bump this thread please?
The last batch of tails I ordered from a wholesaler turned out not to be grey sheathed BS6181Y 7 strand I ordered, but BS6004 BS6181Y BASEC 19 core. This is “flextail” from some suppliers.
-But do we really see it as "fine wire" re 526.9 and ferrules? It's robust stuff, 1.29mm^2 per strand. A compromise maybe to avoid problems with box terminals, perhaps only ferrule the meter/henley etc end? (And I don't have a bootlace ferrule tool that big yet!).
 

davesparks

-
Mentor
Arms
Esteemed
19 strand 25mm is not fine wire requiring ferrules or other treatment, it is in the same class as 7 strand conductors.
 

Strima

-
Arms
Esteemed
25mm fine standed cable is 196 0.4mm strands.
 

Reply to 6381Y PVC in the Electrical Forum area at ElectriciansForums.net

Thread starter Similar threads Forum Replies Date
Eco Chap Electrical Wiring, Theories and Regulations 12

Electrical Forum

Welcome to the Electrical Forum at ElectriciansForums.net. The friendliest electrical forum online. General electrical questions and answers can be found in the electrical forum.
Instyle LED Lighting Specialists UK
This official sponsor may provide discounts for members
Top Bottom