16mm tails on 100A cut out

[Simon47]

Ive only just seen this post, now it's clear from the pictures that this is not an isolator or a circuit breaker.
As is clearly written on the front of it that is a voltage operated earth leakage circuit breaker (VOELCB)

As a point of pedantry ...
As the VOELCB is only rated at 60A, wasn't it a bit naughty of the DNO to fit a 100A fuse ?

 

[davesparks]

As a point of pedantry ...
As the VOELCB is only rated at 60A, wasn't it a bit naughty of the DNO to fit a 100A fuse ?

No, as far as I know there is no requirement for the DNO to make their equipment suit the customers installation. They provide a standard size and type of supply and it is up to the customer to ensure that their installation is suitable.

 

[pc1966]

I think you will find it cheaper to replace the tails than buy a copy of BS6004!

Have you got a photo of the other side (DNO / meter / etc)? Having an isolator fitted is a good idea as it makes future work much easier.

Yes, that type of breaker is ancient and you really could do with a new incomer RCD (and a new board with RCBO or whatever) but don't bin it, there will be folk on here willing to pay postage to get an example I'm sure!

 

[Simon47]

No, as far as I know there is no requirement for the DNO to make their equipment suit the customers installation. They provide a standard size and type of supply and it is up to the customer to ensure that their installation is suitable.

I was thinking about how they (from posts I've read) refuse to connect things they don't like - such as refusing to connect a supply to 16mm tails. I'd have thought their ESQCR would have something to say about connecting a supply when it's clear there is equipment in-line that is not rated for the current rating of their fuse.
I'd have expected them to offer 3 choices: stay with a 60A fuse, change the VOELCB to one rated for 100A and we'll fit a 100A fuse, or stay without a supply.

 

[pc1966]

I expect they only refuse if they think it is a risk to thier side (say cable not suited to the cut-out or meter terminals) or the installation is unsafe.

Your Wylex board is only 60A rated, the sum of its fuses is probably less than 60A, the VOELCB (if working) is adequate for the installation as it was made at that time. It is not for them to decide if you should upgrade or not providing it is not unsafe as such.

 

[davesparks]

I was thinking about how they (from posts I've read) refuse to connect things they don't like - such as refusing to connect a supply to 16mm tails. I'd have thought their ESQCR would have something to say about connecting a supply when it's clear there is equipment in-line that is not rated for the current rating of their fuse.
I'd have expected them to offer 3 choices: stay with a 60A fuse, change the VOELCB to one rated for 100A and we'll fit a 100A fuse, or stay without a supply.

I have no experience of a DNO refusing to reconnect an existing installation after carrying out any work to their equipment.

However in my experience some DNO operatives will find any excuse they possibly can to avoid starting a job or to refuse to connect a new installation.