Ring finals and fused spurs | Page 2 | on ElectriciansForums

Discuss Ring finals and fused spurs in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

That must be total length of cable then. But for sure the OSG also states an A1 RFC is maximum 100sqm floor space.

For a 100sqm room you could be using any length of cable from 20m to over 100m in length, dependant on the route the cable takes etc.
 
for VD on a spur, I'd estimate the length of cable from one end of the rfc and add the spur length, then use mV/A/m. this would give a pessimistic figure as the VD on the rfc part would be less.
 

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