The 2014 National Electrical Code (NEC) development process is in full swing with the NEC technical committees acting on 3,745 proposed new articles and revisions. New and improving technologies and industry advances are driving changes into the electrical industry at an accelerated pace.
Last month, I discussed the issues of industry standards for fiber optic and copper cabling. Manufacturers write standards so they can build products that are compatible with products from other manufacturers, since multiple sources are mandatory in today’s marketplace.
As the electrical industry is poised for some big changes—with the continued development of smart grids, alternative energy and the rapid expansion of data centers—codes- and standards-making bodies are crafting new standards and clarifying old ones.
Let’s refresh our memory on the methods for choosing the correct codes and standards for an installation. With so many, it can be sometimes difficult to determine which requirements we must meet. In many states, there are conflicting codes. So where do you start?
I recently did a workshop for a major city experiencing problems with inspections on photovoltaic (PV) systems during and after installation. The problem was between the inspection and fire department.
Electrical construction has always been a dangerous profession, so finding ways to make the work less hazardous is certainly the goal of the National Electrical Code (NEC); Underwriters Laboratories; the Occupational Safety and Health Administration; NFPA 70E, the Standard for Electrical Safety in t
As the government strives to implement healthcare reform and is approaching many hurdles, the 2011 National Electrical Code (NEC) is well into the development process. Technical committees have acted upon all NEC change proposals and comments.
There have been extensive changes to the 2010 edition of NFPA 72, the National Fire Alarm and Signaling Code. One of the more significant changes was the addition of the circuits and pathways chapter, Chapter 12. Twenty years ago, all we had to describe fire alarm circuits was Class A and B.
Emergency lighting systems consist of circuits and equipment intended to provide power to required facilities when normal power is interrupted. Municipal, state, federal or any governing agencies having jurisdiction typically are the entities that classify an emergency system.
Its recent problems notwithstanding, California continues to light a path to the rest of the nation for policy change. In this case, the path would be lit with a device that uses considerably less power.
Communications systems and circuits in buildings must comply with the applicable rules in National Electrical Code (NEC) 2008 Article 800. Even though these systems operate at lower energy levels, improper grounding and bonding can result in severe consequences for equipment, property and people.
Underwriters Laboratories (UL) announced the publication of UL 2201, a Standard for Portable Engine-Generator Assemblies. Prior to this standard, there was no voluntary safety standard for portable generators sold in the United States.
Low voltage systems are often ungrounded, which is normal, but non-current-carrying metal parts of equipment associated with low voltage systems are generally required to be grounded if the supply system is grounded. This article reviews NEC requirements for grounding low voltage systems.
When installing recessed fixtures, carefully consider the location of the units. The presence of combustible materials surrounding the luminaire is very important, and recessed lights can act as chimneys for heat loss and moisture transfer into attic spaces.