This article was posted 01/17/2006 and is most likely outdated.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
    Reply to this comment

  • Out standing review on code violations

    Neal Barkalow
    Reply to this comment

  • RNC and RMC, in some places are not correct such as in # 4 I love your wanting to help us. Thanks.

    wilbur kelley
    Reply to this comment

  • Regarding number 1. The last line of the "example" paragraph is confusing. In the first line, you correctly state that the Main Disconnect is in the garage. In the second to the last line you correctly state that the grounding conductor needs to be run to the garage. But in the last line you seem to call the panelboard in the basement the main disconnect.

    Craig V.O.
    Reply to this comment

  • Sure looks like Part 2 is just a repeat of the Part 1 list of deficiencies. Should the list have been different, with other deficiencies listed?

    Tom Montgomery
    Reply to this comment

  • Sure looks like Part 2 is just a repeat of the Part 1 list of deficiencies. Should the list have been different, with other deficiencies listed?

    Tom Montgomery
    Reply to this comment

  • As an electrical instructor for 26 years, electrical engineer and master electrican, the NFPA and Local Inspection Authorities over estimate the ability of the average electrican to learn and understand the theory and practical nature of the business. I recognize that no two installations are the same and each and everyone needs to be assessed separately but what the "code experts" need to do is to come up with clear, concise, practical drawings/pictures and place them in the code books. Lets face it, the code although not intended to be an instructional manual, is exactly that! My students are constantly frustrated with being referred from one section to another, only to end up more confused than they need to be. It keeps me employed as an instructor but I can understand how there will be and continue to be, misinterpretations of the intent of the code in installations. I remember someone once saying to me when I was a student "keep it simple" and I understand what they meant. One more thing, if the NFPA expects people to learn and understand the code, please stop changing section numbers and code article numbers. Through my many years, I learn and become able to quote sections only to have the section numbers to change from cycle to cycle with no major change in intent or language! That is frustration! (i.e. 2002 table 430.150 is now 430.250; Table 220.19 is now 220.55)

    Rick Broderick
    Reply to this comment

  • Mike, I think this stuff is very good information,but most of these topic's were on the last one .Part one.

    Joseph Amato
    Reply to this comment


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