Sleeving 3 phase cable to single phase cable

[sunesha sunny]

Could someone help me understand what is cable sleeving? Can we sleeve a 3 phase cable to single phase cable? Is this as per any regs? BS 7671? Could you send me some pictures of the same if you have..

 

[Charlie_]

Sleeving is something you push over wires to identify their colour and/or to insulate the wire.

 

[sunesha sunny]

Sleeving is something you push over wires to identify their colour and/or to insulate the wire.

Is it just done at the terminals?

 

[Spoon]

It is done at each connection point, on both ends of the cable.

 

[Strima]

Suitably marked to identify the conductor.

 

[sunesha sunny]

Do you have any installation pictures?

 

[Deleted member 26818]

The practice of completely sleeving exposed conductors started when they changed to the new colours.
During the changeover period, we were allowed to choose either old colours or the new colours on new installations, but all of the conductor colours in the new installation had to be of the same colour scheme.

Because it was hit and miss as to which colours the wholesalers would send, we would completely sleeve any exposed conductors which were incorrect for the colour scheme chosen.

That practice still happens now when 3 phase cable is used for single phase, though it is not a requirement of BS7671.

BS7671 only requires the conductors to be identified at the terminations, by either colour or alphanumerically.

 

[Taylortwocities]

Please use sleeve and not sticky tape!


Examples of sleeving are in the On Site guide to BS7671. Surely you have a copy?

 

[Pete999]

Sleeving is something you push over wires to identify their colour and/or to insulate the wire.

Sleeving cables for identification does not necessarily provide any insulation propertees.

 

[Charlie_]

Sleeving cables for identification does not necessarily provide any insulation propertees.

I was waiting for a nibble
My comment on the insulating properties on sleeving was to open the discussion further.
Would you say that g/y sleeving is not also used to insulate the bare cpc?
If not, would you sleeve at the terminal and leave the rest uncovered? If you do sleeve all of the cpc then why?

 

[Pete999]

I was waiting for a nibble
My comment on the insulating properties on sleeving was to open the discussion further.
Would you say that g/y sleeving is not also used to insulate the bare cpc?
If not, would you sleeve at the terminal and leave the rest uncovered? If you do sleeve all of the cpc then why?

Deleted

 

[Pete999]

I was waiting for a nibble
My comment on the insulating properties on sleeving was to open the discussion further.
Would you say that g/y sleeving is not also used to insulate the bare cpc?
If not, would you sleeve at the terminal and leave the rest uncovered? If you do sleeve all of the cpc then why?

,I believe Charlie, that providing supplementary insulation. the insulation must be equal to or better than the original insulation provided, Identification sleeving does not provide that amount of insulating properties, when applying sleeving to the cpc, the cpc is not a live conductor.
Appendix K OSG Provides information on colours etc of identification sleeves, and is used for many purposes ie at switches where brown and blue core are used for switch wires the blue core shall be marked brown at its termination K3,K4 and K5 K6 and Tables K6(1), 11 and 111 give examples, K7 deals with DC Installations.

















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[davesparks]

I was waiting for a nibble
My comment on the insulating properties on sleeving was to open the discussion further.
Would you say that g/y sleeving is not also used to insulate the bare cpc?
If not, would you sleeve at the terminal and leave the rest uncovered? If you do sleeve all of the cpc then why?

Yes it is, see 543.3.201

 

[Charlie_]

So gy sleeving inside enclosures, DBs, etc for id purposes only?

 

[davesparks]

,I believe Charlie, that providing supplementary insulation. the insulation must be equal to or better than the original insulation provided, Identification sleeving does not provide that amount of insulating properties, when applying sleeving to the cpc, the cpc is not a live conductor.

543.3.201 requires bare protective conductors up to and including 6mm which are incorporated within a sheathed cable to be protected by insulating sleeving in accordance with BS EN 60684 where the sheath is removed at joints am determinations.