NEC Requirements for SPDs

ArticleRequirement
230.67 (New-2020)Surge Protection requirement for Dwellings
Requires a certified/listed Type 1 or Type 2 Surge Protective device for all services for dwelling units, located within or immediately adjacent to the service equipment.
620.51 (E)Elevators, Dumbwaiters, Escalators, Moving Walkways, Platform Lifts, & Stairway Chairlifts
“Where any of the disconnecting means in 620.51 has been designated as supplying an emergency system load, surge protection shall be provided”
645.18Surge Protection for Critical Operations Data Systems
“Surge protection shall be provided for Critical Operation Data Systems”
670.6“Industrial machinery with safety interlock circuits shall have surge protection”
694.7 (D)Wind Electric Systems
“A surge protection device shall be installed between a wind electric system and any loads served by the premises electrical system”
695.15Fire Pumps
“A listed surge protection device shall be installed in or on a fire pump controller”
700.8Emergency Systems
“A listed SPD shall be installed in or on all emergency system switchboards and panelboards”
708.20 (D)Surge Protection for Critical Operations Power Systems
“Surge protection devices shall be provided at all facility distribution levels”  COPS- Critical Operation Power Systems