WElectrical wiring
WAC power plugs and sockets: British and related types
WAluminium-conductor steel-reinforced cable
WBus duct
WCable tray
WCeiling rose
WCircuit breaker
WConsumer unit
WCopper conductor
WCopper-clad aluminium wire
WCopper-clad steel
WElectrical busbar system
WElectrical cable
WElectrical conduit
WElectrical outlet tester
WElectrician
WExtension cord
WFuse (electrical)
WGround (electricity)
WHousehold hardware
WIndustrial and multiphase power plugs and sockets
WKeystone wall plate
WKnob-and-tube wiring
WMains electricity by country
WMineral-insulated copper-clad cable
WMulticore cable
WNational Electrical Code
WNational Electrical Contractors Association
WNational Inspection Council for Electrical Installation Contracting
WPower cable
WPower cord
WRat-tail splice
WResidual-current device
WStar quad cable
WT-splice
WTechnical standards in Hong Kong
WTeck cable
WThree-phase electric power
WTwist-on wire connector
WVacuum interrupter
WWestern Union splice
WWiring closet
WWiring diagram
WZip-cord