Code Quiz
Dec 4, 2008, By Steven Owen
When installing temporary wiring in exhibition halls, for events such as trade shows, the temporary wiring is...
Code Quiz
Nov 20, 2008, By Steven Owen
What is the minimum ampacity and minimum size conductor required for a circuit that connects a capacitor to the terminals of a 25 hp, 460VAC, 3-phase, air conditioner induction motor?...
Code Quiz
Nov 6, 2008, By Steven Owen
The insulation of batteries rated greater than 250V may be all but which of the following?...
Code Quiz
Oct 23, 2008, By Steven Owen
According to the 2008 NEC, one of the reasons why flame resistant clothing and equipment is required is to protect qualified persons from the hazard of ...
Code Quiz
Oct 9, 2008, By Steven Owen
When grounding the frames of metal-enclosed power switchgear, which of the following methods listed here is the only one that is permitted by the 2008 NEC?...
Code Quiz
Sep 18, 2008,
When grounding the ferromagnetic envelope of skin effect-heating systems, what are the grounding requirements?...
Code Quiz
Sep 4, 2008, By Steven Owen
According to the 2008 National Electrical Code, electric drinking fountains installed in public buildings, such as schools, must meet which of the following requirements...
Code Quiz
Aug 21, 2008, By Steven Owen
When bonding a swimming pool perimeter surface, where structural reinforcing steel is encapsulated in a nonconductive compound, the following conditions apply...
Code Quiz
Aug 7, 2008, By Steven Owen
When bonding a swimming pool shell, which of the following shall be considered conductive materials due to water permeability and porosity?...
Code Quiz
Jul 17, 2008, By Steven Owen
When installing a hand-hole enclosure flush with the surface of the earth surrounding it, do you know how to properly ground the enclosure, including the cover?...
Code Quiz
Jul 3, 2008, By Steven Owen
When installing a concealable nonmetallic extension from an existing 15A non-grounding receptacle outlet in an existing dwelling unit...
Code Quiz
Jun 19, 2008, By Steven Owen
What is the minimum cover requirement for an underground installation of a 13.8kV feeder installed in a 3-inch Schedule 80 rigid PVC nonmetallic conduit in the earth?...
Code Quiz
Jun 5, 2008, By Steven Owen
Which of the following wiring methods is the only one permitted to be installed under the roof decking in an industrial building without a minimum 1 ½-inch spacing from the bottom edge of the roof decking?...
Code Quiz
May 16, 2008, By Steven Owen
When connecting a surge protective device (SPD) grounding conductor of a Type 1 SPD at the service, which of the following connections is permitted? Note: the SPD may be a surge arrester or TVSS...
Code Quiz
May 1, 2008, By Steven Owen
A surge protective device (i.e., surge arrester or TVSS) shall be permitted for which of the following?...
Code Quiz
Apr 17, 2008, By Steven Owen
What is the minimum cubic inch area required for a terminal housing supplied with a generator?...
Code Quiz
Apr 3, 2008, By Steven Owen
When installing wiring methods in ducts or plenums used for environmental air, all but which of the following wiring methods are permitted?...
Code Quiz
Mar 20, 2008, By Steven Owen
Which of the following methods for connecting grounding and bonding conductors to equipment is the only one not permitted by the NEC?...
Code Quiz
Mar 6, 2008, By Steven Owen
What is the allowable ampacity of any one of the current-carrying 12 AWG THHN insulated conductors installed in a cellular concrete floor raceway with 29 other current-carrying 12 AWG THHN conductors and five equipment grounding conductors?...
Code Quiz
Feb 21, 2008, By Steven Owen
On a 3-phase, 4-wire, 277V multi-wire lighting circuit, which is protected at 20A, there is debate as to the proper application of 210.4(B) and 240.15(B)....
Code Quiz
Feb 7, 2008, By Steven Owen
On a 3-phase, 4-wire, 480/277V service, a question has arisen as to the required rating of the service disconnect. The calculated load is 780A. The fusible disconnecting means is rated at 1,000A, based on the maximum fuse size that can be installed....
Code Quiz
Jan 24, 2008, By Steven Owen
In accordance with the 2008 NEC, excluding exceptions, arc-fault circuit-interrupter protection is required in which of the following dwelling unit locations?...
