The National Electrical Code (NEC) contains sufficient rules and requirements that apply to box fill calculation requirements.
The intent of 110.16 in the NEC is to help ensure electrical workers wear proper PPE where justified energized work must be performed.
In June 2016, CE Code Technical Committee voted on and agreed to the following definition changes in Section 0.
When considering the arc flash hazard there are two questions we need to ask (the same two questions for any hazard): What is the likelihood it will happen? and How severe will the impact be?
The basic process to select the right overcurrent protective device (OCPD) for this discussion of 80% rated versus 100% rated, begins with a calculation of the load, includes a journey through conductor selection based on the calculated load current, and ends with the right OCPD to protect the conductor.
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?
The transformer is one of the most basic of electrical equipment found in a power distribution system, and just when you thought that a hunk of iron wound with wire couldn’t possibly be transformed, the industry does something that blows your mind.
In this article, we will discuss the fundamentals of bonding and grounding. To start, we should get an understanding of the difference between bonding and grounding.
A firm understanding of the basic principles associated with series and parallel circuits is a sufficient background to begin an investigation of any single-source DC network having a combination of series and parallel elements or branches.
Consider an effort in 2016 to get back to the basics of electrical distribution system design whether it is residential, commercial or industrial. There is a lot that can be revisited.