This article was posted 01/17/2006 and is most likely outdated.

Most Common Installation Deficiencies - 2002 (Part 2 of 3)
 

 
Topic - NEC
Subject - Most Common Installation Deficiencies - 2002 (Part 2 of 3)

January 17, 2006 

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Most Common Installation Deficiencies

State of New Hampshire 2002

Credit: http://www.nh.gov/electrician/concerns_2002.html

The Board welcomes any input from instructors, inspectors, licensees and other concerned parties relative to this list or any other items of concern. To view the deficiencies and examples for each deficiency, please ‘control/click’ on the light bulb for the appropriate deficiency.

light bulb 1.) A grounding electrode conductor that is attached to the grounded conductor or equipment grounding terminal bar of a remote panelboard.
light bulb 2.) The bonding of metal water piping in the vicinity of separately derived systems.
light bulb 3.) The non-use of expansion fittings in Rigid Non-Metallic (PVC) conduits that are subject to thermal expansion and contraction.
light bulb 4.) The improper supporting and securing of Rigid Non-Metallic (PVC) raceways.
light bulb 5.) 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 6.) The improper installation and securing of expansion fittings in runs of Rigid Non-Metallic (PVC) Conduit.
light bulb 7.) The lack of "in use" type covers on outdoor receptacles.
light bulb 8.) Use of electrical equipment without following the manufacturer's installation instructions.
light bulb 9.) The non-bonding of service raceways and equipment.
light bulb 10.) The non-use of a locking type disconnect for submersible well pump motors.
light bulb 11.) The improper connection of septic pumps.
light bulb 12.) The spaces about electrical equipment.
light bulb 13.) The improper supply for emergency unit equipment.
light bulb 14.) Failure to re-identify the white conductor in cables installed for the purpose of switching, employing the white conductor as an ungrounded conductor.
light bulb 15.) Swimming Pool filter motors with attached cords that contain an equipment grounding conductor smaller than 12 AWG.
light bulb 16.) Portions of raceways installed connecting varying temperate atmospheres without vapor transfer seals.

 

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.
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Comments

  • I tried to cancel the last. Now for one last time. I am convinced that the writers of the NEC have dropped the ball big time and are oblivious to the level of education the average electrician has. But that's beside some of the most ridiculous mistakes the NEC contains. For example, if you look up the definition of power outlet you'll see what I mean. And if you look up the word "neutral" in the index, it will refer you to the definitions where it is not there. The myths and confusion about grounding is also caused by the writers of the NEC. The misleading wording can be found in article 250-1(FPN) in the four codes: of 1981, 1984, 1987, and 1990. That's twelve years of misleading electricians into believing that a connection to the earth will facilitate the operation of the overcurrent device for low voltage distribution systems (systems in almost all buildings). I have a copy of this NEC page for anyone who would like me to send to them by email. You can call me at (972)-238-5682 for me to email this to you. If I would have known that the NEC was as bad as it has been, I would have never chosen to be an electrician and I believe that the NEC frustrates electricians to becoming apathetic towards learning the rules.

    RALPH GREENE
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