Codes & Standards

When Metals Collide Code Applications July 2020
Codes & Standards
Posted Jul 2020

When Metals Collide

Mark C. Ode
Cathodic action and dissimilar metal interaction are phenomena with a long history of recognition in the laws of physics as well as within the National Electrical Code. I first ran...
Code Comments July 2020
Codes & Standards
Posted Jul 2020

Know These Rules

Michael Johnston
Communications systems and equipment installed in buildings must comply with the specific rules provided in Article 770 and Chapter 8 of the National Electrical Code (NEC) . Even though these...

Recent Stories

Jul 2020

When Metals Collide

Mark C. Ode
Cathodic action and dissimilar metal interaction are phenomena with a long history of recognition in the laws of physics as well as within the National Electrical Code. I first ran across this issue back in the 1970s and ‘80s...
When Metals Collide Code Applications July 2020
Jul 2020

Beware the Hazards That Lurketh

Jim Phillips
My fascination with electricity began as a young boy, and I learned many things the hard way. One lesson involved dismantling an old record player to see how it worked. That was when I learned the famous electrical technician...
Arc Flash Safety July 2020
Jul 2020

Back to School Safely

Mark Earley
As I write this, the country is easing its way out of lockdown. It has been an extraordinary time, but not in a good way, because right now we don’t know when things will get back to the new normal. Much of our lives has been...
Code Insider July 2020
Jul 2020

Know These Rules

Michael Johnston
Communications systems and equipment installed in buildings must comply with the specific rules provided in Article 770 and Chapter 8 of the National Electrical Code (NEC) . Even though these systems typically operate at...
Code Comments July 2020
Jun 2020

Is NM Cable Acceptable in a Wet Location?

Mark C. Ode
For example, has a limited amount of NM cable been installed in outside locations, such as inside a Type 3R enclosure or inside electrical metallic tubing (EMT) where the EMT has been installed exposed on an outside wall, and...
Jun 2020

Is Self-Certification Good Enough?

Mark Earley
I recently received a message on LinkedIn from an attorney. That always gets my attention. Many consultants gravitate toward special expert witness work, but I have no interest in it. In court, your client’s attorney will try...
Jun 2020

Neutral and Grounded

Michael Johnston
The grounded conductor at the service provides two essential functions for the premises wiring system. The first is to serve as a current-carrying conductor for the load supplied. Second, it functions as the intentionally...
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