Electrical theory and wiring books will be in the TK area in college libraries using the Library of Congress shelving system and in the 620s in public libraries using the Dewey Decimal shelving system. There is a copy of the National Electrical Code in the Creekside library reference area for in-library use.
Search the LSCS Library Catalog:
Electrical and Electronic Principles and Technology by 
Electrical Circuit Theory and Technology by 
Electrical Circuit Theory and Technology by 
Practical Electrical Wiring by 
National Electrical Code 2017 by