The NEC ® is the world's most widely adopted safety code!
Make sure you're equipped with the edition adopted as law by your state, city, or local jurisdiction. The 1990 National Electrical Code ® delivers complete safety criteria for the full range of electrical installations. This edition included over 1,000 revisions, including changes impacting remote-control signaling circuits, and fire protective signaling systems.
Order the 1990 Softbound edition or instantly download the PDF!
If your work involves electrical design, installation, or inspection, you need hands-on access to this indispensable tool! NFPA® has the NEC you need to complete jobs confidently and efficiently. Order today from the Code source. (1990)