Coba jelasin Lihat juga dari Wayar neutral dalam bahasa melayu dong

Plag dan soket AC domestik

[1] Rick Gilmour et al., editor, Canadian Electrical Code Part I, Nineteenth Edition,  C22.1-02 Safety Standard for Electrical Installations, Canadian Standards Association, Toronto, Ontario Canada (2002) ISBN 1-55324-690-X

[2] NFPA 70, National Electrical Code 2002,  National Fire Protection Association, Inc., Quincy, Massachusetts USA, (2002). no ISBN

[3] IEE Wiring Regulations Regulations for Electrical Installations Fifteenth Edition 1981, The Institution of Electrical Engineers, (1981) Hitchin, Herts. United Kingdom