To play this game, you need a sharp eye, a quick mind and a 2014 National Electrical Code book. (Fill-in-the-blank questions are looking for the exact word(s) used in the NEC.)
Sunlight is our most valuable resource and, when properly used, it can provide all of the energy the world needs for future generations. The PV module through the photovoltaic effect is the device that allows us to convert sunlight directly into electricity and that solar-generated electricity has some unique characteristics.
Why did the Table 6 change result in fewer conductors in a raceway? The quick answer is that Table 6 in the 2012 CE Code was not accurate for all types of raceways.
Recessed luminaires certified/Listed by UL to ASTM E283 are marked with the enhanced UL Certification Mark for safety and performance as shown in the example mark.
So getting back to Benjamin Franklin’s quote. How important is it to adopt the current codes?
Rule 4-006 introduced into Table 39 into the 2012 edition of the CE Code has certainly created lots of buzz among the Code users.
Are there “UL Authorized Service People” who can modify UL Listed equipment in the field with no need of a UL field inspection or a field evaluation?
Requirements for audibility of a fire alarm system (FAS) are governed by Article 3.2.4.19. of the National Building Code of Canada (NBCC). So, why is this subject being discussed in a purely electrical publication?
There are two options for certifying engine generator enclosures. In the first option, the generator enclosure or weather housing alone is Classified/Certified. In the second option, a generator and enclosure are Listed/Certified together as a stationary engine generator assembly.