2020 National Electrical Code Changes | EC&M

2020 National Electrical Code Changes

Monique Mobley, an electrical apprentice in Philadelphia, tying in a connection to the utility company. It's her first electrical service, 200 amps.

The Apprentice’s Guide to Article 220

Best practices for performing branch-circuit, feeder, and service load calculations

Sept. 8, 2022

Emergency lighting control is an essential aspect of commercial space design.

Lighting & Control

How to Meet UL 924 Requirements for Emergency Lighting

June 21, 2022

National Electrical Code

NFPA Makes Corrections to Sec. 314.17 in the NEC

April 13, 2022

Fig. 1. The distance between raceway entries enclosing the same conductor must be at least 6 times the trade size of the largest raceway.

Taking the Mystery Out of Sizing Pull Boxes and Junction Boxes

March 2, 2022

Fig. 1. This circuit arrangement violates the tap rules in the NEC.

Why Tap a Feeder in the First Place?

Feb. 8, 2022

LED luminaire lifetimes are reaching 100,000+ hours, meaning they can last 10 years or more, depending on the ambient temperature of the installation location.

Lighting & Control

Safely Lighting Hazardous Environments

Dec. 4, 2020

More than 2 million residential solar systems are in service. Many of them have disconnect enclosures that are unsecured, posing a danger to homeowners.

Locking Up the Residential Solar Market

May 19, 2020

Ecm Gfci Feature 0420 Pr

National Electrical Code

Recent Rule Changes for GFCI Protection

April 17, 2020

Ecm Inspector Intel 0220 1

National Electrical Code

Kitchen Islands and New Receptacle Requirements in the 2020 NEC

Feb. 18, 2020

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