Comments Feed

Code Q&A: Air-Conditioner Calculations Commented on: 2 weeks ago (July 14, 2014)

From your question, I understand you are thinking of 240.4(D)(7) and the general rules for overcurrent protective device sizing. In the case of motor loads, refer to 240.4(G) and Table 240.4(G),...

Overcurrent Protection, Part 4 Commented on: 3 weeks ago (July 10, 2014)

The author was making the point that overcurrent devices are not permitted in the current path of a grounded conductor, sometimes also known as the neutral conductor, unless permitted elsewhere in...

Code Q&A: GFCIs in Unfinished Basements Commented on: 4 weeks ago (July 1, 2014)

Perhaps if you purchased GFCI devices that cost more than $6, then you may not have as many false tripping problems.

A basement where things maybe wet or damp is exactly where you NEED a...

Lightening Up on Lighting Loads Commented on: 8 weeks ago (June 2, 2014)

I agree and disagree.

I worked on a twin office tower project totaling 1,000,000 square-feet in the late 80s and was assigned to calculate the loads and fault currents. We included demand...

NEMA Publishes Standard for Roadway and Area Lighting Equipment Commented on: 8 weeks ago (June 2, 2014)

In 29 years of consulting I have never used mercury vapor lighting. Always used high pressure sodium or metal halide in the past. Now, I always consider LED unless the client has some very strong...

Code Quiz: AFCI and GFCI Protection Commented on: 10 weeks ago (May 22, 2014)

The dishwasher will require AFCI protection because it is an outlet, as defined in Article 100, and 210.12 requires AFCI protection for all 'outlets' in said rooms.

As for GFCI protection,...

The Basics of Circuit Breaker Maintenance Commented on: 18 weeks ago (March 28, 2014)

Manny: As Eaton bought the low-voltage distribution portion of Westinghouse, I suggest you contact your local Eaton sales representative about reconditioning your breaker.
Good luck.

Overhead Broadband Communications Cables Commented on: 18 weeks ago (March 23, 2014)

The wording in the title would suggest Article 830 Network-Powered Broadband Communications Systems, specifically 830.44(G)(3) would apply. However the actual wording in the question points to...

Simple Ways to Improve Maintenance, Part 1 Commented on: 27 weeks ago (January 20, 2014)

Based on previous editions of this newsletter, your HVAC tech re-torquing connections without replacing hardware is more likely making your connections worse - heading for trouble.

Join the Discussion on EC&M Talk

EC&M Learning Center

 

Newsletter Signup

Connect With Us

Sponsored Introduction Continue on to (or wait seconds) ×