Earth cables twisted and sheathed together

[ElectriCall]

Hi all,

Just thought I would ask some peoples views on this, how do you all feel about twisting the CPC together then putting the sleeving on all of the cables then connecting it into the earth connector.

I absolutely detest this practice and hate coming across this particular making ammendment to a circuit. As far as I know it is not against any regs but would happily make in the next ammenment

 

[jaypp]

I may be wrong (as I'm not too experienced), but I definitely wouldn't be going round un-twisting cpc's at sockets on an EICR or recommending that it should be done. My post was humour (in my mind anyway!) and personally, I'm not a fan of twisting conductors together. For the record, I doubt this practice has been taught (except by mentors) in the last 15 to 20 years

 

[ElectriCall]

I must admit, i do twist the ends together ... but just the ends! I detest people who twist numerous lengths together and put them all in one piece of sleeving.

Seperate sleevings and ends twisted ... tin hat on.

Sleeving separated but twisted at the end is not such an pain, but in the same sleeve is not good, I tend to think of the person working after me but I don't thing wiring with this method in 1 sleeve actually doesn't benfit the installer

 

[davesparks]

You'll get good continuity if it is wired correctly, you must separate the earths on sockets anyway, and it is good practice.

What exactly do you mean by 'must separate the earths', and which regulation stipulates this?

 

[Geordie Spark]

Well I meant the regulation number which states that CPCs MUST be separated. I'm assuming you mean in socket outlets but what about lighting circuits where you have one earth terminal but are three plating at the fitting?
What about CUs where the terminals are numbered, how are you going to split them when you need to maintain the order of circuit numbering?
There are many many examples I could use but since these are the easiest.
Come on then bonny lad, let's have it.

Shall I bring you a sandwich & a beer while you're waiting son??

 

[trev]

Shall I bring you a sandwich & a beer while you're waiting son??

Aye cheers Fatha

 

[applemac]

Sod the sleeving. On jbs put the lid on then bring the cpcs out bare and twist them over the top to keep lid on!

 

[jaypp]

I must admit, i do twist the ends together ... but just the ends! I detest people who twist numerous lengths together and put them all in one piece of sleeving.

Seperate sleevings and ends twisted ... tin hat on.

That was how I was shown, reason was continuity. At time (20yrs ago) I had no reason to question it

 

[davesparks]

Twisted cores under a screw tend to result in one conductor getting crushed through as it compresses the twist, or unequal pressure on the two conductors.

 

[ElectriCall]

Sod the sleeving. On jbs put the lid on then bring the cpcs out bare and twist them over the top to keep lid on!

Brilliant, I love coming across these. You are a legend

 

[jaypp]

Twisted cores under a screw tend to result in one conductor getting crushed through as it compresses the twist, or unequal pressure on the two conductors.

Yes, as I say no reason to question it at the time! Very easy to damage conductors

 

[Geordie Spark]

Yes, as I say no reason to question it at the time! Very easy to damage conductors

Aye .... all it takes is a little tumble down the stairs of the Double Decker.

 

[Pete999]

You'll get better continuity if you leave them twisted together!

Are you winding us up Jay?

 

[Pete999]

Which government was that??

Harooold

 

[Knobhead]

Good man Herod Wislon.


(Private Eye Christmas Issue)

 

[urbanmonkey]

Don't think there is a reg number to state the CPCs shouldn't be twisted in the back of a socket etc but its good practice not to do it. I always separate conductors if I find them twisted up. Say they pop out of the terminal, you end up with no Earth at the socket and still have r2 continuity if tested from anywhere else on the circuit. Council lot I was working for only ever tested end to ends when doing board changes etc, a fault like that wouldn't be found in that case. Two sleeved into one at the board is also sloppy work in my opinion. I know some of the older guys would have been taught that way but I've seen somebody kicked off site on a hospital build for twisting up conductors.