External metering enclosure

[Martin Kerr]

Folks
Could you suggest an fused isolator of choice, to install in a recessed external metering cubicle, in a domestic installation, this will be required to terminate a 25mm SWA
I am unsure of how much space I can utilise of the standard enclosure, not to encroach on the DNO cut-out and meter installation

 

[Charlie_]

Instead of an isolator why not a dp MCB in an enclosure?

 

[Toneyz]

Those are nice switchfuses, except the terminal screws are too small for the terminals.

What do you mean they are too small for the terminals?

 

[Taylortwocities]

Instead of an isolator why not a dp MCB in an enclosure?

MCB not the best choice for this sort of application.
It’s very hard to get discrimination if the downstream device is also an MCB.
Fuse, all day long…

 

[Toneyz]

Instead of an isolator why not a dp MCB in an enclosure?

It gives bad discrimination ( selectivity for all you 18th's out there)

 

[DefyG]

Never had an issue with installing a SF in a metering enclosure as long as the equipment doesn't interfere with the cutout or meter.
If I remember correctly, the Lewden SF accepts upto 35sqmm! and is quite sturdy and relatively small.
The Wylex equivalent SF is often too big to fit in.

 

[freddo]

What do you mean they are too small for the terminals?

See this post here.

 

[freddo]

Those are nice switchfuses, except the terminal screws are too small for the terminals.

I just looked again, it really is pretty poor, small steel allen screws in a brass terminal. They should be large brass slotted screws in brass terminals. What garbage.

 

[Toneyz]

Thanks for posting that up Freddo I would have expected a lot better than that from Wylex.

 

[freddo]

Thanks for posting that up Freddo I would have expected a lot better than that from Wylex.

I'm guessing it's cost cutting from Electrium, the same as what sadly happened to Crabtree stuff.

 

[Charlie_]