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Building Construction & Safety
Electrical Safety and Licensing
Most Common Installation Deficiencies - 1999

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 1999 NEC becomes effective July 1, 1999 as part of the Board’s administrative rules. Some local municipalities may adopt the 1999 NEC at an earlier date therefore, it is advisable to check with the local authority before starting an installation. However, no matter what edition of the NEC the local municipality is under installations in the State of New Hampshire must be performed to the current edition of the NEC as adopted by the Electricians’ Board.

To view the deficiencies and examples for each deficiency, please click on light bulb for the appropriate deficiency.

light bulb 1.) Branch-circuit equipment grounding conductors that are not spliced or joined together with in a box.
light bulb 2.) A grounding electrode conductor that is attached to the grounded conductor or equipment grounding terminal bar of a remote panelboard.
light bulb 3.) The non-use of expansion fittings on conduits emerging from the earth that are attached to fixed equipment and are installed in locations that are subject to ground movement.
light bulb 4.) The non-use of expansion fittings in Rigid Non-Metallic (PVC) conduits that are subject to thermal expansion and contraction.
light bulb 5.) The improper securing of expansion fittings in runs of Rigid Non-Metallic (PVC) Conduit.
light bulb 6.) The improper supporting of Rigid Non-Metallic (PVC) raceways.
light bulb 7.) The Improper installation of cord connected electric-discharge light fixtures.
light bulb 8.) The improper supporting and securing of branch-circuit wiring methods, located above suspended ceilings, that supply light fixtures or equipment.
light bulb 9.) The non-bonding of metal raceways containing grounding electrode conductors. This problem is more common in dwelling unit installations than with commercial or industrial installations.
light bulb 10.) The non-bonding of service raceways and equipment.
light bulb 11.) The improper conductor fill of conduit bodies.
light bulb 12.) The lack of "in use" type covers on outdoor receptacles.
light bulb 13.) The non-use of a locking type disconnect for submersible well pump motors.
light bulb 14.) The improper bonding and grounding of transformers.
light bulb 15.) The lack of verification of the available short circuit current at the supply terminals of service equipment.
light bulb 16.) The improper supply for emergency unit equipment.
light bulb 17.) The mixing of emergency (Article 700) system wiring with legally required (Article 701) and optional (Article 702) system wiring.
light bulb 18.) The improper installation of ground rods.
light bulb 19.) The improper connection of septic pumps.
light bulb 20.) The supporting of cable or other raceways from raceways.
light bulb 21.) Use of electrical equipment without following the manufacturers installation instructions.
   
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