Cpc connection wylex

[Nigel sparks]

Hello can anyone advise what they would do in this situation please. I have a wylex 100amp switch fuse that has an incoming and out going cpc connection which takes up to a 16 mm cpc. I have 16mm incoming and outgoing cpc, however how do I then earth the enclosure and the banjo as the cpc connection has no connection with the enclosure

 

[westward10]

Most of the spec online state that separate terminal will take a 16.0.

 

[Nigel sparks]

I noticed that in pictures of it. I really wonder why they have the switch CPC terminal at all, why not have just the box adequately sized?

Yes exactly, I wonder how many people have installed one thinking the enclosure is linked to it

 

[Nigel sparks]

Most of the spec online state that separate terminal will take a 16.0.

No that’s the earth terminal joined to the switch , the three connection are L N E

 

[Nigel sparks]

Is it swa in and out or tails in.

Tails in swa out

 

[pc1966]

Tails in swa out

Could you just take the 16mm CPC to a crimp lug bolted to the SWA's banjo and, assuming 3C SWA, also put a lug on the cable's SWA conductor to the same bolt?

i.e. Ignore the switch's through-CPC connection and the box's terminal strip completely.

EDIT: Also you could use a nylock nut if concerned about it coming loose.

 

[westward10]

Tails in swa out

Stick another 10.0 in for the terminal if it fits.

 

[Nigel sparks]

Could you just take the 16mm CPC to a crimp lug bolted to the SWA's banjo and, assuming 3C SWA, also put a lug on the cable's SWA conductor to the same bolt?

i.e. Ignore the switch's through-CPC connection and the box's terminal strip completely.

EDIT: Also you could use a nylock nut if concerned about it coming loose.

Yes I think that is the only option, it’s a lot of extra faff and the switches are not cheap

 

[Nigel sparks]

Stick another 10.0 in for the terminal if it fits.

No only takes a 10 mm

 

[Nigel sparks]

No only takes a 10 mm

Sorry I ment only takes a 16mm

 

[pc1966]

Yes I think that is the only option, it’s a lot of extra faff and the switches are not cheap

Could you knock the existing small terminal block off the box and fix something like this in its place with a pair of machine screws:

CED 4-Way Earth Block - Screwfix

Order online at Screwfix.com. Nickel-plated. FREE next day delivery available, free collection in 1 minute.

www.screwfix.com

You might need to have nuts on top and use countersunk heads coming through from the back to is fixes flush though.

 

[Nigel sparks]

Sorry I ment only takes a 16mm

What size cpc should I earth banjo with?

 

[pc1966]

What size cpc should I earth banjo with?

Depends on the fuse I guess. The On-Site Guide table B4 & B5 has smallest CPCs meeting adiabatic limit for fuse and Zs cases.

 

[westward10]

Sorry I ment only takes a 16mm

So this separate terminal will take a 16.0?

 

[Nigel sparks]

Could you knock the existing small terminal block off the box and fix something like this in its place with a pair of machine screws:

CED 4-Way Earth Block - Screwfix

Order online at Screwfix.com. Nickel-plated. FREE next day delivery available, free collection in 1 minute.

www.screwfix.com

You might need to have nuts on top and use countersunk heads coming through from the back to is fixes flush though.

That’s a good option it’s a shame I have fifteen to do of these

 

[Nigel sparks]

Depends on the fuse I guess. The On-Site Guide table B5 has smallest CPCs meeting adiabatic limit for fuse and Zs cases.

It will be a 80amp hrs, have seperate cpc so not relying on the armoured

So this separate terminal will take a 16.0?

Sorry no on the switch L and N will take up to 35mm and earth takes 16mm max

What size cpc should I earth banjo with?