We all know our an industry is governed by codes and standards. While many complain about some of the requirements, few try to do anything about it. We all have an opportunity to fix things that we don’t like. Most people don’t understand the process or believe they can have any effect.
It makes sense that most contractors focus on the codes that relate to the system types they install. Specifically, professional systems contractors most use NFPA 70, National Electrical Code and NFPA 72, National Fire Alarm and Signaling Code.
Debates within the organizations that develop the power quality standards will probably continue for years about why “power” isn’t really the subject of the standards. The majority of the standards present how to measure, monitor, characterize, categorize and set limits on voltage.
If you have a problem related to the National Electrical Code (NEC), are experiencing difficulty in understanding a Code requirement, or are wondering why or if such a requirement exists, ask Charlie, and he will let the Code decide. Questions can be sent to firstname.lastname@example.org.
The overcurrent device rating is a key factor when determining the correct size conductor. Article 240 in the National Electrical Code (NEC) provides general requirements for overcurrent protection and overcurrent protective devices.
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.