TNS fuse unknown, Help

[Devil7]

Hi guys, come across this today for the first time, no markings or stickers of any relevance and no former certs, anyone seen these before and know what it is, don't know if it makes any difference but it's in the Yorkshire area - any help would be appreciated

 

[Strima]

Is that thermal damage on the service head?

 

[Devil7]

Is that thermal damage on the service head?

Yes, from a while ago, it was sorted... for whatever reason the DNO used the same cover

 

[Lister1987]

Looks like TNS to me, earth is coming off the sheath is it not? DNO not able to tell you what the fuse is/should be based on the MPN you give them?

 

[Baddegg]

Yes, from a while ago, it was sorted... for whatever reason the DNO used the same cover

How do you know it was sorted?......do the seal fairies not visit Yorkshire?....what scheme are you gonna with some suppliers allow some scheme members to pull the fuse, not sure I’d advise pulling that through it may just be the picture but it looks like it’s melted......

 

[Wilko]

Hi - It looks like TNS (assuming there’s no PME stickers out of view ) and a couple of impedance checks may support this.

 

[Baddegg]

I thought he was asking for the fuse size?....?

 

[littlespark]

If it’s fuse size for a cert or report, just have to fill in not verified (N/V)

 

[R-fur]

There is a good chance that it is a standard BS1361 but cut-outs of that vintage sometimes had rewireable cartridges. but without getting a look at it you don't know the type or size, so not verified as others have said.

 

[davesparks]

As others have said just record it as N/V on the certificate, you don't need to go breaking seals and pulling it just to find out what number is written on the fuse.

If you need to information to calculate you tails size or earthing conductor size etc then assume worst case scenario of 100A

 

[freddo]

not sure I’d advise pulling that through it may just be the picture but it looks like it’s melted......

The pitch everywhere could just be from when the head was filled some spilled over the side.