As we prepare for the 2016 Section Meetings, the sections and chapters hosting the meetings have been very busy planning the education programs, networking activities, trade shows, and lining up the most knowledgeable speakers and subject matter experts in the electrical industry.
PV ac system output currents for the larger systems are usually too high for connection on the load side of the service disconnect and must be connected on the supply side of the service disconnect. The NEC allows such connections, but the existing service must be examined carefully to determine where the connection can be made and what type of equipment must be used to make the connection.
This article will explore the need for overcurrent protection for current-carrying tap conductors. CE Code Rule 14-100 requires overcurrent protection where a conductor receives a supply of current and at each point where the size of conductor is decreased.
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.)
My main concern for this particular installation is in reference to 690.64(B)(2). The new 400-amp subpanel is being supplied by 400-amp disconnect which is fed by a line side tap ahead of the service-main disconnect.
To assist the Strategic Planning Committee and consultants in the development of a new plan, we conducted a membership survey in January and February 2016.
UL has several tools available to de-mystify hazardous locations. UL has been certifying hazardous location equipment for over 100 years, and has launched a smart device application explaining the different hazardous locations classification systems.
When dielectric liquid-filled equipment is installed outdoors, does it have to be located in fire-rated rooms and vaults? The answer could be found in Rules 26-014, 26-242 and 26-244 of the CE Code.
Considering the complexity of the PV systems and the environment in which they operate, electrical inspections of PV systems is no easy task for the AHJ.
The information we received from our 2016 membership survey is instrumental in helping us understand how members view the association and its services.