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