Mark W. Earley, Jeffrey S. Sargent, Joseph V. Sheehan, "NEC 2005 Handbook: NFPA 70: National Electric Code; International Electrical Code Series" 2005 | pages: 1335 | ISBN: 0877656258 | PDF | 88,1 mb
Joseph V. Sheehan, Mark W. Earley, Jeffrey S. Sargent, "National Electrical Code 2002 Handbook" English | 2001 | pages: 718 | ISBN: 087765462X | PDF | 4,3 mb