Containing all editions of the National Electrical Safety Code? in effect from 1973 to 2000, NESC?: The Archives (1973-2000) is an invaluable authoritative resource on safety requirements for power, communications, telephone, cable TV, and railroad signal systems. Offered together for the first time on this Limited Edition user-friendly VuSpec? CD-ROM, NESC?: The Archives (1973-2000) embodies the expertise and hard work of the engineers who revised each edition. LICENSING: SINGLE-USER EDITION: THIS PRODUCT IS LICENSED FOR ONE USER ONLY.