Discuss Taisl & Earth in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

I

irishsailor

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Current Regs state that that tails should be 25mm, however WPD recently fitted a Isolator and fitted 16mm tails. Is it acceptable practice for the tails to be uped to 25mm from the consumer end of isolater to the CU??

Also the supply is TNCS and the current Earthing conductor is 10mm, is it acceptable to put Henley block in and up the EC to 16mm

This in a domestic premise

Cheers

Chris
 
Current Regs state that that tails should be 25mm, however WPD recently fitted a Isolator and fitted 16mm tails. Is it acceptable practice for the tails to be uped to 25mm from the consumer end of isolater to the CU??

Also the supply is TNCS and the current Earthing conductor is 10mm, is it acceptable to put Henley block in and up the EC to 16mm

This in a domestic premise

Cheers

Chris
hi chris,
what size fuse is in the cutout. if its 60 amp then 16mm tails are fine. 100 amp and you need new 25mm tails from isolator. earthing conductor needs replacing from cutout in 16mm to new cu either way ;)
 
I

irishsailor

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  • #3
Re: Tail & Earth

Flukey

Thanks for your reply, It is 100A cutout so I agreed with what you said. So I will need to ask WPD to fit 16mm Earth. As I said they fitted the tails and fitted 16mm to the isolator. When questioned they stated that was all they fitted. So I will fit 25mm from consumer end to cover my back IAW wjth the Regs.

Thanks
 
Re: Tail & Earth

Flukey

Thanks for your reply, It is 100A cutout so I agreed with what you said. So I will need to ask WPD to fit 16mm Earth. As I said they fitted the tails and fitted 16mm to the isolator. When questioned they stated that was all they fitted. So I will fit 25mm from consumer end to cover my back IAW wjth the Regs.

Thanks
its down to you to fit the 16mm earth irish. as with the tails you are only concerned with consumers side of the isolator ;)
 
I

irishsailor

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  • #5
Flukey

It is a TNCS supply, am I ok to change the Earth and is it a big job

Chris
 
Flukey

It is a TNCS supply, am I ok to change the Earth and is it a big job

Chris
depends if the cutout is sealed, what seal;) and yes its easy to change
 
irish you can not touch the earth where it is connected into the service head you could terminate it in an earth block and put a bit of 16mm in to the cu and get wpd to replace thier bit
 
I

irishsailor

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  • #8
Mark

Thats what I wanted to know, is that acceptable practice for me to terminate the earth in Henley Block, and increase to 16mm form there, and get them to upgrade the earth
 
irish you can not touch the earth where it is connected into the service head you could terminate it in an earth block and put a bit of 16mm in to the cu and get wpd to replace thier bit
hi mark, if upgrading main earth i always connect straight into service head :eek:
is this a big no no then as i cant see the problem :confused:
 
I

irishsailor

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  • #10
Flukey what is the procedure for doing that
 
the only problem is that that connection belongs to the elec board same as main fuse and meter and should have a seal on which shouldnt be broken
we have all done it but thats the rules;)
 
Flukey what is the procedure for doing that
unscrew the little cover that goes over neutral/earth cable and connect straight to terminal
 
I

irishsailor

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  • #14
So you dont have to actually pull the fuse sorry for the stupid questions, but really appreaciate your good advice
 
not the fuse but make sure all the cu and any other load is off
 
S

Spudnik

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  • #16
Some cutouts do not have the facility to remove the main earth from it without removing the main fuse first.

Newer ones do have screws that can be accessed without removing anything.
 
I

irishsailor

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  • #18
Guys

Thanks for all the very helpful advice, I think I will cut the earth and put some block in and increase the size from there and contact the distributor to come and increase it from the service head, as looking at the current head it looks like it has only one access, so to be on the safe side.

Irish
 
G

Guest123

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  • #19
Guys

I think I will cut the earth and put some block in and increase the size from there and contact the distributor to come and increase it from the service head

Irish
Wise move.:)
 
will the distributor charge for this service :confused:

Guys

Thanks for all the very helpful advice, I think I will cut the earth and put some block in and increase the size from there and contact the distributor to come and increase it from the service head, as looking at the current head it looks like it has only one access, so to be on the safe side.

Irish
i would do the same irish if your service head hasnt got the little removable cover
 
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