It is designed to safely carry electrical loads inside water wells so long as it is sized properly. Submersible pump cable is used between the wellhead and the pump in submersible applications, and is approved by Underwriters Laboratories (UL) for underwater duty. There are two classifications of insulated multi-conductor cable used in submersible pump applications: submersible pump cable and underground feed cable, known commonly as UF. The purpose of this article is to help the pump installer decide which type and size of pump cable to use. The code contains general requirements regarding the type of cable to be used when installing pumps, but the installer is given some latitude as to the specific type of cable. Guidelines for electrical installations are contained in the National Electric Code (NEC).
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