50mm 3c swa to 25mm 3c swa.

[Carloss]

Hello, i'll explain the situation.

Overhead lines were replaced and are now underground.
New met installed at bottom of field.
I have 25mm tails coming out the the met into a 100A switch fuse.
Their is a 50mm 3c swa traveling underground to the house.
At the house their is another 100A switch fuse with 25mm 3c swa going to a CCU 15 metres away.

50mm swa does not fit in the 100A switch fuse; my thoughts were to have 25mm tails coming out of the switch fuse and into something to connect to the 50mm swa. i have a few ideas on how to overcome the problem one them being line taps and some kind of busbar chamber to lug the tails onto the rail.. but not convinced its the correct way! would be great if you sparkys could share your knowledge on what you would do.

thanks
carlos

 

[electronicsuk]

A new, larger switchfuse? In fact, do you even need a switchfuse? If there's one at the supply origin then an SP&N switch should suffice.

 

[RF Lighting]

Yep, something like a 200A switch or switch fuse would be my preferred option too.

 

[Carloss]

Thanks for your reply.
basically the overhead supply that was their originally came into the house and the CCU was 15m away, so i put a switch fuse in to cover the swa. when the job was pretty much complete the client decided that they wanted the overhead taken out of their field and buried. All the under floor heating and tiles are down so its to late to run a direct armoured from the new met position to the ccu. the elec board said the met had to go at the bottom of the field which left me to put in another switch fuse.

the wholesaler we use said they don't have anything larger than the one im using. thats why im asking here for an alternative suggestion. do you happen to have a website for this larger one?

carlos

 

[RF Lighting]

Which wholesalers are you shopping at?

Mickey mouse electrical?

Anyway, even if not held in stock, even the most rubbish wholesaler will get them on order.

 

[Lectrician]

You must have a larger one at the origin? Just get the same as that one?

 

[Taylortwocities]

Which wholesalers are you shopping at?

Be gentle, we don't know what part of Cyprus he is living in...