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.)
Accreditation is the means by which an independent third party, an accreditation body, provides formal recognition that an organization is competent to carry out specific tasks.
Almost ten years ago, I had the pleasure of working on and testing new concept inverters for a large manufacturer at a facility called PVUSA (Photovoltaics for Utility Systems Applications).
Learning comes from listening to helpful feedback and feedback comes when you’re in motion. Mistakes become teachers when we recognize, communicate and implement course corrections.
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?