Section We 702.04 - Electrical Requirements(a) The electrical wire between a well and the building served by the well shall be encased in conduit from the well to the inside of the foundation wall.(b) Electrical conduit shall be: (1) PVC schedule 40 or equivalent;(3) Flexible plastic pipe rated for 100 pounds per square inch pressure or better; or(4) National Electrical Code approved conduit.(c) An electrical conduit shall be mechanically secured to the well cover to prevent the entrance of insects or other foreign matter. When flexible plastic pipe is used for electrical conduit, the pipe shall be secured to the well cover with a stainless steel clamp.(d) All electrical wiring installations from the point of entry into the building to the power source shall conform to the National Electrical Code as adopted by reference in RSA 155-A:1, IV.(e) Electrical installation within the building served by the well shall meet the following requirements: (1) Electrical cable shall be secured at a maximum interval of 4 1/2 feet and within one foot of each cabinet box, fitting or pressure switch unless the cable is within an approved raceway;(2) Electrical cable shall not be directly secured to cold water piping;(3) If no other suitable anchorage is available, the electrical cable shall be secured to a board which shall be secured to the structure;(4) Installations using approved electrical conduit shall be anchored in accordance with the requirements for such conduit specified in the National Electrical Code, as adopted by reference in RSA 155-A:1, IV; and(5) A protective conduit shall be used to pass the cable through the foundation wall.(f) Wire shall be sized in accordance with the pump or motor manufacturer's specifications.(g) A domestic pump installation shall have controls sufficient to operate the water system.(h) Electrical wire in the well shall be secured to the drop pipe with tape at intervals between 5 and 20 feet, in order to support the weight of the wire.(i) Submersible pump motors shall be grounded as specified in the National Electrical Code, as adopted by reference in RSA 155-A:1, IV.(j) Submersible pump branch circuit equipment grounding conductors shall be bonded and mechanically connected to the well casing, if metal casing is used, using one of the following methods: (1) Pressure connectors listed in the National Electrical Code, as specified in We 101.24;(2) Pressure connectors listed for use as grounding and bonding equipment, as specified in We 101.24;(3) Machine screw-type fasteners that engage not less than 2 threads or are secured with a nut;(4) Thread-forming machine screws that engage not less than 2 threads in the enclosure;(5) Connections that are part of a listed assembly; or(6) Other listed methods.(k) All wire connections in the well, with the exception of the grounding conductor, shall be water tight.(l) Compliance with (j)(3) above, may be achieved by drilling a minimum 1/4 inch diameter hole through the well casing and connecting the grounding conductor to the casing using a stainless steel bolt and nut fastened wrench tight.(m) For the purposes of (j)(5) above, listed assemblies shall include well covers listed for compliance with National Electrical Code requirements for grounding and bonding.(n) Nonconductive coatings, such as paint, lacquer, and enamel, on well casing or equipment to be grounded shall be removed from contact surfaces to ensure electrical continuity unless the grounding equipment is connected by means of fittings designed to make such removal unnecessary.N.H. Admin. Code § We 702.04
#7307, eff 6-13-00; ss by #9179, eff 6-13-08
Amended by Volume XXXVII Number 2, Filed January 12, 2017, Proposed by #12083, Effective 3/1/2017, Expires 3/1/2027.