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Your Deep Dive into NFPA 70E 2018

Every three years, the National Fire Protection Association (NFPA) updates NFPA 70E: Standard for Electrical Safety in the Workplace®. The standard’s intent is to...

Service Equipment Labeling [ NEC 2017 100.16(B)] Part 2

Practical Example The following is a real-life example of a church supplied from a 208Y/120 VAC, 300 KVA, 3-phase pad mount utility transformer. The published...

Service Equipment Labeling — NEC 2017 110.16(B)

Prior to the 2002 version of the National Electrical Code® (NEC®), incident energy and arc flash requirements were found in NFPA 70E, “Standard for...

Don’t Worry About Arc Flash: Control IT!

At some point in our life we have all heard, or perhaps stated, variations of the common phrase, “Don’t worry about things you can’t...

Behavior of Apparel Fabrics during Convective and Radiant Heating

Personal protective equipment (PPE) recommended for arc flash is not always designed for arc-flash exposure. The purpose of this paper is to warn of...

Arc Energy Reduction

Now that the 2014 edition of the National Electrical Code® (NEC®) has been published let’s look at what’s new in the requirement for arc...

Selective coordination and arc flash protection study in electrical design —...

This subject has been already discussed in one of my previous articles. However, confusion on this issue does not appear to subside among the...

Arc Flash — Root Cause Discussion

Continuous improvement is a way of life for any business and is accepted as a standard approach in improving quality, productivity and processes. At...

Marking Available Fault Current

When standing in front of a line-up of switchgear, panelboards or switchboards you may be amazed at how many labels you see. These labels...

Gloves, Arc Flash, and the New ASTM Test Method

The 90-year-old technology of using rubber gloves for shock and leather gloves for protection of the rubber soon could be turned on its head by innovation. For...
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