By Murray Wennerlund published 7-18-2023 updated 7-18-2023
"14. 551.71(F) GFCI Protection for Receptacles (Recreational Vehicle Parks)
All 125-volt, single-phase, 15- and 20-ampere receptacles at RV parks are required to have listed ground-fault circuit-interrupter (GFCI) protection for personnel. 30- and 50-ampere receptacles used in RV park supply equipment shall not be required to meet the requirements of 210.8(B).
The 30- or 50-ampere power cord for an RV is considered a feeder, not a branch circuit. GFCI protection is not appropriate on a feeder circuit in these situations. The internal wiring in an RV provides the necessary GFCI protection for branch circuits that are integral to the RV.
In the first printing of the 2020 NEC, this section was under appeal as result of a Certified Amending Motion (CAM) that was heard at the NFPA annual meeting. As a result of the action taken at the annual meeting, the language referenced back to the 2017 NEC text. CMP-7 submitted a Tentative Interim Amendment (TIA): TIA 20-8, Reference: 551.71(F), that was accepted and ultimately changed the text back to the initially proposed language forgoing the need for GFCI protection on the 30- and 50-ampere receptacle(s) in RV site equipment."