Part 8 Rules

  • 13 Jan 2011 1:16 PM
    Message # 495125
    Anonymous
    Part 8 Rules 
  • 13 Jan 2011 10:50 PM
    Reply # 495556 on 495125
    Anonymous

    Do the Part 8 Rules allow flexible metal conduit to be used as an equipment grounding method?

  • 14 Jan 2011 10:09 PM
    Reply # 496184 on 495556
    HR
    Tony Tomasin wrote:

    Do the Part 8 Rules allow flexible metal conduit to be used as an equipment grounding method?


    250.118. Types of equipment grounding conductors. The equipment grounding

    conductor run with or enclosing the circuit conductors shall be 1 or more or a

    combination of the following:

    (1) A copper, aluminum, or copper-clad aluminum conductor. This conductor shall

    be solid or stranded; insulated, covered, or bare; and, in the form of a wire or a

    busbar of any shape.

    (2) Rigid metal conduit.

    (3) Intermediate metal conduit.

    (4) Electrical metallic tubing.

    (5) Flexible metallic tubing where the tubing is terminated in listed fittings and

    meeting both of the following conditions:

    (a) The circuit conductors contained in the tubing are protected by overcurrent

    devices rated at 20 amperes or less.

    (b) The length of flexible metallic tubing in the ground return path does not exceed

    1.8m (6 feet).

  • 15 Jan 2011 9:40 AM
    Reply # 496309 on 495125
    Tony Tomasin

    That is the correct answer but just as a reference there is also a second place that mentions this topic.  It is found here:

     

    ARTICLE 348

    FLEXIBLE METAL CONDUIT

    348.60. An equipment grounding conductor or equipment bonding jumpers shall be installed. Equipment grounding conductors shall be installed in accordance with section 250.134(B) of the code. Equipment bonding jumpers shall be installed in accordance with section 250.102 of the code.

    R 408.30867

  • 18 Jan 2011 4:28 PM
    Reply # 499776 on 495125
    Tony Tomasin

    Do the same rules apply in the Part 8 Rules for unsupported raceways between panels and boxes as in the NEC?

  • 20 Jan 2011 8:43 AM
    Reply # 503887 on 495125
    Anonymous
    When is the State going to wise up stop letting mechanical contractors pull electrical reconnect permits? 75% of the jobs are improper !!!
  • 20 Jan 2011 8:48 AM
    Reply # 503890 on 503887
    Dave Lusn
    Anonymous wrote: When is the State going to wise up stop letting mechanical contractors pull electrical reconnect permits? 75% of the jobs are improper !!!

    Why don't the state allow electrical contractors to pull mechanical permits?
  • 21 Jan 2011 5:00 PM
    Reply # 504923 on 495125
    Tony Tomasin

    Excellent question Dave.  As electrical inspectors we’ve seen a lot more electrical violations when mechanical electrical work is done by a mechanical contractor versus an electrical contractor.  When I do these inspections I make sure I hold a mechanical contractor to the same standards I would an electrical contractor and I think we all should.  I’m not saying all work done by a mechanical contractor is inferior because there are some qualified firms out there but proportionately I have found their electrical violation ratio is higher than that of electrical contractors.  Perhaps this is a good opportunity for RECI to offer training to mechanical firms on the most common violations we find.  I will bring it up at the next education committee meeting.  Thanks for the reply.

    Tony

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