The National Fire Protection Association (NFPA) recently issued a Tentative Interim Amendment (TIA) to the 2020 edition of NFPA 70, National Electrical Code. Issued on Dec. 6, 2019 (and effective as of Dec. 26, 2019) by the Standards Council after being processed by Code-Making Panel 7, it revises Sec. 552.71(F), making the following changes:
551.71(F) GFCI Protection.
All 125-volt, single-phase, 15- and 20-ampere receptacles shall have listed ground-fault circuit-interrupter protection for personnel. The GFCI devices used in RV site electrical equipment shall not be required to be weather or tamper resistant in accordance with 406.9 and 406.12.
Informational Note: The percentage of 50 ampere sites required by 551.71 could be inadequate for seasonal recreational vehicle sites serving a higher percentage of recreational vehicles with 50 ampere electrical systems. In that type of recreational vehicle park, the percentage of 50 ampere sites could approach 100 percent.
Ground-fault circuit-interrupter protection shall be provided as required in 210.8(B). GFCI protection shall not be required for other than 125-volt, 15- and 20-ampere receptacles used in the recreational vehicle site equipment.
Informational Note No. 1: Appliances used within the recreational vehicle can create leakage current levels at the supply receptacle(s) that could exceed the limits of a Class A GFCI device.
Informational Note No. 2: The definition of Power-Supply Assembly in 551.2 and the definition of Feeder in Article 100 clarifies that the power supply cord to a recreational vehicle is considered a feeder.
Note: A TIA is tentative because it has not been processed through the entire standards development process. It is interim because it is effective only between editions of the standard. A TIA automatically becomes a public input of the proponent for the next edition of the standard; as such, it then is subject to all of the procedures of the standards-making process.
