Code Basics

Understanding the foundation of the National Electrical Code and applying its principles on the job and in the field

Highlights

NEC Requirements for Energy Storage Systems

Feb. 15, 2024
The high energy levels in energy storage systems make them especially dangerous if they are not installed and maintained per Code.

NEC Requirements for GFCIs and AFCIs

Jan. 17, 2024
Do you know the specific locations where GFCI and AFCI protection are required?

NEC Requirements for Fire Pumps

Dec. 13, 2023
Article 695 provides the minimum electrical requirements for installing fire pumps.
Fig. 1. An electrically powered passenger vehicle needs a dedicated charging circuit. Article 625 provides the requirements for installing the conductors and equipment for electric vehicle charging, power export, or bidirectional current flow.

NEC Requirements for EV Equipment

Nov. 9, 2023
The electrical conductors and equipment for connecting an electric vehicle to premises wiring must meet specific guidelines.
Fig. 1. Locations are classified according to the properties of the hazard.

NEC Requirements for Hazardous Locations

Oct. 11, 2023
Article 500 prepares you for properly applying Articles 501 through 516.
Fig. 1. The scope of Art. 404 can be found in Sec. 404.1.

NEC Requirements for Switches

May 9, 2023
Don’t let switch-related Code violations darken your reputation.
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?
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.
Fig. 1. The width of the working space can be measured from left to right, from right to left, or simply centered on the equipment.

NEC Requirements for Working Clearances

Feb. 9, 2023
Don’t let adequate working space be “the final frontier” at your facility.