The foundation of electrical theory and the application of its principles


Photo 1. When connections are properly installed, the bond is permanent and will not corrode or break over time.

Qualifying Permanent Ground Connections

Feb. 7, 2022
An inside look at the IEEE 837 Standard
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Electrical Troubleshooting Quiz — August 1, 2023

Aug. 1, 2023
What is the real problem here, and what should your response be?
Swimming pool

A Deep Dive Into Article 680

July 13, 2023
Understanding equipotential bonding requirements for swimming pools, fountains, and similar installations as outlined in Art. 680 of the NEC
Fig. 1. Use the rules in Art. 430 to calculate and apply overcurrent protection for motors.

NEC Requirements for Motors – Part 1 of 2

July 12, 2023
Do you know the basics of Art. 430, including what overload protection is and what the requirements are for overload protection?
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Broadcast video caption

EC&M Tech Talk Video — Bonding for Safety and Compliance

July 1, 2023
In Episode 28, Randy Barnett covers bonding of electrical systems and equipment.
Fig. 1. Rigid metal conduit requirements can be found in NEC Art. 344.

NEC Requirements for Metal Conduits

April 14, 2023
Do you know the rules for installing the four types of metal conduit listed in the NEC?
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It's Back: Benfield Conduit Bending Manual

April 3, 2023
The classic manual in the electrical industry, with simple math and clear instructions for bending conduit of various materials, for a wide variety of real-world scenarios. Just...
grounding and bonding connection

How To Make Proper Grounding and Bonding Connections

March 15, 2023
Best practices for applying the eight methods outlined in Sec. 250.8 of the NEC
Fig. 1. Shorter conductors and minimal bends improve SPD performance by helping to reduce conductor impedance during high-frequency transient events.

NEC Requirements for Overvoltage Protection

March 10, 2023
Don’t rely on a single type of surge protection device; implement a strategy based on tiered protection.