Caution - Please use for Guidance ONLY
NO guarantee as to the accuracy of these values is
given or implied.
All values should be checked against some other
Twin & Earth or Three Core &
House wiring cable
S.W.A Xlpe ( TLC - Standard SWA
SWA with Xlpe thermosetting insulation giving
an increased current carrying capacity.
S.W.A with standard Pvc
Pvc insulated with Tough Pvc
thermosetting insulation giving an increased current carrying
Suitable for building sites and some garden and
other tough conditions.
Basis for Calculations:
not grouped or bunched
SWA Xlpe - Conductor temperature
SWA Pvc - Conductor temperature 70°C
& E - Conductor temperature 70°C
Conductor temperature 90°C
Allowances MUST be
made for operating temperatures outside the above,
correction factors refer to the full IET 17th edition
regulations for tables.