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

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