bigegg
Scream Not Working Because Space Make Deaf
- Messages
- 9,471
- Location
- Leeds, West Yorkshire
i've been reading...
no.1 shed is a concrete garage with a plywood + felt roof.
above the roof is a second roof, made of steel profile supported on scaffolding boards.
there are no metal rafters, or frames, or any way of touching the steel from inside.
i'm intending to run a 32A supply from a separate CU into the shed using 6mm 3core SWA - a distance of around 10m altogether.
however, upon reading, it looks like i need to bond to earth any "extraneous conductive parts" using 10mm copper cable.
so...
is the steel roof an "extraneous conductive part"?
what about a planned 22mm copper line from the air compressor in a separate (all timber) shed?
should i just go for 10mm² swa cable anyway?
tn-c-s earth to the house, btw.
no.1 shed is a concrete garage with a plywood + felt roof.
above the roof is a second roof, made of steel profile supported on scaffolding boards.
there are no metal rafters, or frames, or any way of touching the steel from inside.
i'm intending to run a 32A supply from a separate CU into the shed using 6mm 3core SWA - a distance of around 10m altogether.
however, upon reading, it looks like i need to bond to earth any "extraneous conductive parts" using 10mm copper cable.
so...
is the steel roof an "extraneous conductive part"?
what about a planned 22mm copper line from the air compressor in a separate (all timber) shed?
should i just go for 10mm² swa cable anyway?
tn-c-s earth to the house, btw.