The Blog

Welcome to the DES Blog. We hope you enjoy our posts. Please feel free to reach out to us if you have any questions or comments.

NOTE: Content within this blog is for informational and/or entertainment purposes only.

AC Motors Explained

We got a request for an explanation of how AC Motors work. I admit, even for an electrical engineer this can be a complex question. This...

CAT5/6: Good Cable Bad Cable

Counterfeit electrical equipment is all the rage now a days. Here is a quick video on what to look for with CAT5/6 cables to assure you...

What Does Asbestos Look Like?

Check out this slide show we found with images of Asbestos containing material. Asbestos can take many forms. Please contact DES or...

Zinsco Breakers

Most everyone has heard of the dangers with Federal Pacific Breakers (FPE). Not everyone has heard of the dangers of Zinsco breakers....

What is a Shunt

Excellent video from Galco on the explanation on Electrical Shunts. Feel free to contact us for any of your electrical questions!

Eddy Current Drive

We wanted to share this short video of how Eddy Current Drives work. This technology has been largely replaced by VFDs, though sometimes...

Reading a Motor Nameplate

Check out this short video from Galco for how to read a motor nameplate. Nameplates are an important piece of information that can...

LED Lights Flickering

We have had a lot of questions from the electricians and contractors we support regarding LED bulbs flickering after installation. We...

NEMA Ratings Explained

We have been getting a lot of questions regarding NEMA ratings lately. We found this excellent video from Galco that gives a brief...

Lighting and Safety

Whether it is an elderly grandmother walking to her car in the grocery store parking lot or a worker on an assembly line, lighting is an...

Phase Imbalance on Motors

Phase imbalance can significantly reduce the life of electrical equipment. Check out this short video by Galco regarding phase imbalance...

Cable and Pipe Tracing

Take a look at this excellent short video we found on cable tracing. As a reminder SC provides free underground utility identification...

Lightning Strike Map

The Carolinas are prone to lightning strikes. For live strike events see the link below: https://www.lightningmaps.org/blitzortung/americ...

Arc Flash PPE

An excellent short info-graphic on Arc Flash PPE, with links to handy quick reference guides. As a remind DES provides Arc Flash...

Beware of Counterfeits

If a deal seems too good to be true it likely is. There is a large amount of counterfeit electrical equipment, ranging from breakers to...

Federal Pacific Breakers

Excellent video showing a teardown of a FPE breaker. These breakers have a high failure rate and are notoriously dangerous. See if you...