S
WCopper conductor
WCopper-clad aluminium wireA
WPower cord
WElectrical wiringB
WExtension cord
WHigh-voltage cableC
WMineral-insulated copper-clad cable
WPortable cordD
WRadio frequency power transmission
WT-antennaE
WTeck cable
WTough rubber-sheathed cableF
WTwin and earth
WFile:Tps-3core.png