Steven Owen

Steven
Owen
Articles
Code Quiz: Skin-Effect Heating and Pull Boxes 
For skin-effect heating, pull boxes installed for pulling the electrically insulated conductor in the ferromagnetic envelope shall be permitted to be buried under the thermal insulation, provided their locations are indicated by ________ markings on the insulation jacket surface and on drawings.
Code Quiz: Identification of Fixed Electric Heating Equipment 
The presence of electrically heated pipelines, vessels, or both, shall be evident by posting of appropriate ________ signs or markings at intervals not exceeding ___ along the pipeline or vessel and on or adjacent to equipment in the piping systems that require periodic servicing.
Code Quiz: Definition of Hermetic Refrigerant Motor Compressor  1
A hermetic refrigerant motor compressor consists of a compressor and motor, both of which must be enclosed in _____ ______ ______, with no external shaft or shaft seals, with the motor operating in the refrigerant.
Code Quiz: Definition of Voltage to Ground  1
As per the definition in Art. 100 of the 2014 NEC, what is the voltage to ground value on a circuit in a 480V ungrounded system.
Code Quiz: Underground Systems Containing Mixed Wiring Types 
Per Sec. 820.47(A) of the 2014 NEC, when installing underground coaxial cables in a duct, pedestal, handhole enclosure, or manhole that contains electric light, power, or Class 1 or non-power-limited fire alarm circuit, conductors shall be in a section permanently separated from such conductors by means of a _________.
Code Quiz: Metal Conduit Grounding Requirements for Coaxial Cables  1
When installing communication wires and cables in cable routing assemblies, vertical runs of the cable routing assemblies shall be supported at intervals not to exceed _______, unless listed for other support intervals, and shall not have more than one joint between supports
Code Quiz: Vertical Support Requirements for Cable Routing Assemblies 
When installing communication wires and cables in cable routing assemblies, vertical runs of the cable routing assemblies shall be supported at intervals not to exceed _______, unless listed for other support intervals, and shall not have more than one joint between supports
Code Quiz: Horizontal Support Requirements for Cable Routing Assemblies 
When installing communication wires and cables in cable routing assemblies, horizontal supports for cable routing assemblies shall be installed at intervals not to exceed _____ at each end or joint unless listed otherwise. In no case shall the distance between supports exceed _____.
Code Quiz: Installation of Fire-Resistive Cable Systems  1
Where a fire-resistive system is listed to be installed in a raceway, the raceway enclosing the system is permitted to be which one of the following?
Code Quiz: Fire-Resistive Cable System Grounding Requirements 
When installing a fire-resistive system requiring an equipment grounding conductor (EGC), the EGC shall use the same fire-rated cable described in the system, unless installed in compliance with which of the following requirements?
Code Quiz: Grounding of Strut-Type Channel Raceway  2
Where a strut-type channel raceway enclosure uses a snap-fit metal cover to achieve electrical continuity in accordance with the listing,
Code Quiz: Motor and Controller Disconnecting Means  4
With respect to a motor circuit application, the disconnecting means at the controller location is “in sight from” and 15 ft from the controller.
Code Quiz: Ampacity of Generator Conductors 
Excluding any exception(s), what is the minimum ampacity of the conductors from the generator terminals to first distribution device containing overcurrent protection?
Code Quiz: Handhole Enclosure Requirements  1
With respect to wiring entries, such as a schedule 80 PVC raceway installed underground entering into a handhole enclosure, a schedule 80 PVC raceway shall be mechanically and electrically connected to the handhole enclosure by ______.
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