These motors are 12 vdc and are not thermally protected and do not have disconnects that I can find. I asked two repair shops in Alaskawhat were the main failures in R/V's and they said refrigerators and tip out motors. One service man told me that he has seen the motors not only burn up but they burned up the wiring harness also. I checked Article 551 of the NEC that covers R/V's and found that the low voltage wiring is not covered by the NEC. Additionally, these motors are not labeled with amps, voltage, etc. They simply have a part number on them. Also the RV's do not necessarily have a wiring diagram making working on these things a nigtmare. Any comments. REF: 551.1 Scope. The provisions of this article cover the electrical conductors and equipment other than low-voltage and automotive vehicle circuits or extensions thereof, installed within or on recreational vehicles, the conductors that connect recreational vehicles to a supply of electricity, and the installation of equipment and devices related to electrical installations within a recreational vehicle park. FPN: For information on low-voltage systems, see NFPA 1192-2002, Standard for Recreational Vehicles, and ANSI/RVIA 12V, Low Voltage Systems in Conversion and Recreational Vehicles, 2002 edition.