Most Common Installation Deficiencies

State of New Hampshire 2005

Credit: http://www.nh.gov/electrician/concerns_2005.html

The Electricians' Licensing Board in conjunction with the State Electrical Inspectors, municipal electrical and building inspectors and other representatives of the electrical industry in the State of New Hampshire have put together this list of common installation deficiencies and problems encountered by the Board's office staff. The Board welcomes any input from instructors, inspectors, licensees and other concerned parties relative to this list or any other items of concern.

The Board would like to remind all concerned parties that the 2005 NEC becomes effective July 1, 2005 as part of the Board's administrative rules.

The following is a list of the most common deficiencies found with electrical installations in the State of New Hampshire. The list is in random order and it has been formatted to the 2005 edition of the National Electrical Code (NFPA 70-2005). To view the deficiencies and examples for each deficiency, please ‘control/click’ on the light bulb for the appropriate deficiency.

 1.) A grounding electrode conductor that is attached to the grounded conductor or equipment grounding terminal bar of a remote panelboard.
 2.) The bonding of metal water piping in the vicinity of separately derived systems.
 3.) The non-use of expansion fittings in Rigid Non-Metallic (PVC) conduits that are subject to thermal expansion and contraction.
 4.) The non-use of expansion fittings on conduits emerging from the earth where attached to fixed equipment and are installed in locations that are subject to ground movement.
 5.) The improper installation and securing of expansion fittings in runs of Rigid Non-Metallic (PVC) Conduit.
 6.) Use of electrical equipment without following the manufacturer's instructions.
 7.) The non-bonding of service raceways and equipment.
 8.) The non-use of a locking type disconnect for submersible well pump motors.
 9.) The improper connection of septic pumps.
 10.) Clearances working clearances, headroom, dedicated space.
 11.) Failure to re-identify the white conductor in cables installed for the purpose of switching, employing the white conductor as an ungrounded conductor.
 12.) The terminating of more than one grounded conductor under a single terminal.
 13.) The failure to support luminaires to the ceiling grid in suspended ceilings.
 14.) The flexible connection to emergency system equipment in hospitals.
 15.) The mechanical protection of fire pump wiring and control wiring.
 16.) The location of the disconnecting means for Emergency Systems.
 17.) The separation of Emergency System Conductors from other conductors.
 18.) Emergency, Legally Required and Optional Standby Signs
 19.) The sealing of underground raceways or raceways that are exposed to different temperatures.

 

Mike Holt’s Comment: What an outstanding service by the State of New Hampshire. These guys really have it together. Be sure to ‘control/click’ each of the light bulbs for the technical details.