NH: Most Common Electrical Installation Deficiencies (2014 NEC)


The Joint Board of Licensure and Certification, State of New Hampshire compiled a list of the most common electrical installation deficiencies in the State of New Hampshire in 2014, formatted to the 2014 edition of the National Electrical Code (NFPA 70-2014) as follows:

  • Use of electrical equipment without following the manufacturer’s instructions, including installation and securing of expansion fittings in runs of Rigid Polyvinyl Chloride (PVC) Conduit and improper tightening of electrical connections
  • Inadequate clearances: working space, clear spaces, headroom and dedicated equipment space
  • Improper sealing of underground raceways
  • Improper grounding of electrode system
  • Bonding of metal water piping in the vicinity of separately derived systems
  • Wireways and consideration of 310.15(B)(3)(a)
  • Improper use of NM cable in other structures permitted to be Types III, IV or V construction
  • Improper installation of exposed vertical risers from fixed equipment
  • Improper use of Flexible Cords and Cables, Article 400
  • Failure to use weather-resistant outdoor receptacles
  • Inadequate mounting height of switches
  • Failure to use proper methods for circuit directories and circuit Identification
  • Improper connection of septic pumps
  • Failure to comply with signage requirements
  • Lack of separation of Emergency System Conductors from other conductors
  • Misunderstanding of the requirements for the installation of branch circuits supplying emergency lighting

Additional Source: Electrical Licensing Concerns And Commonly Found Installation Deficiencies in the State of New Hampshire 2014