Electrical installations handbook
edited by Gunter G. Seip
Siemens Aktiengesellschaft John Wiley & sons, 1987
 Buku Referensi
Dorf, Richard C.
The Electrical engineering handbook
CRC Press , 1993
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National electrical code handbook
Mark W. Earley, Jeffrey S. Sargent, Joseph V. Sheehan, E. William Buss, editor
National Fire Protection Assosiation, 2008
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The national electrical code handbook
edited by Mark W. Earley, Richard H. Murray, John M. Caloggero
National Fire Protection Assoociation, 1989
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Bhatia, S. L.
Handbook of electrical engineering
Khanna Publishers, 1976
 Buku Referensi