Hello All
Just a quick one does a three phase 25mm sub main in swa 4 meters long have to be fused even thou it comes from a bs1361 100amp services fuse then from a standard three phase isolation switch fitted from electricity company? Being swa and 25mm in size would this be acceptable? Reason I ask is I came across this the other day and it had me thinking weather it should be fused again even thou the cable is adequate to the fuse rating.
Just a quick one does a three phase 25mm sub main in swa 4 meters long have to be fused even thou it comes from a bs1361 100amp services fuse then from a standard three phase isolation switch fitted from electricity company? Being swa and 25mm in size would this be acceptable? Reason I ask is I came across this the other day and it had me thinking weather it should be fused again even thou the cable is adequate to the fuse rating.
