Switch fuse or rotary isolator?

[Waterhouse1989]

Hi we have been asked to run a 3 phase supply into a boiler house to feed a DB fed from next to the existing meter. Would we need to install Tails to a switch fuse or could we just install a rotary isolator? Just tight for space near the Meter and switch fuses are big. Thanks

 

[davesparks]

Your new distribution circuit needs to have fault and overload protection.
Depending on the size of the incoming supply, prospective fault current etc a switchfuse, fused switch or MCCB will suitable.

 

[Waterhouse1989]

Your new distribution circuit needs to have fault and overload protection.
Depending on the size of the incoming supply, prospective fault current etc a switchfuse, fused switch or MCCB will suitable.

Thanks I did think I needed a switch fuse but thanks for clarifying