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NEC: Feeder Conductors, Part 1 Commented on: 1 week ago (June 23, 2015)

I must take exception to two points in the article.

1. The third paragraph states the panelboard main breaker is the final OCPD and not the branch circuit breakers. That is false. The...

Overcoming Junction Box-to-Motor Mounting Deficiencies Commented on: 1 week ago (June 23, 2015)

Not a bad solution. Another solution could be use of cable and pin-and-sleeve plug wired into the motor junction box. The matching receptacle with appropriate disconnect switch would then be...

DOE Evaluates Potential for Wind Power in All 50 States Commented on: 3 weeks ago (June 9, 2015)

140 meter tall tower! That's 460 feet. Add in the rotor blade and we're talking about a distance above grade of almost 780 feet. Does Secretary Moniz believe residents will not have a problem with...

NEC: Branch Circuit Conductors, Minimum AWG, Part 2 Commented on: 5 weeks ago (May 20, 2015)

Third paragraph, third sentence: the OCPD is to be 40A MINIMUM, not maximum [see Sec. 210.19(A)(3)].

NEC: Branch Circuit Conductors, Minimum AWG, Part 1 Commented on: 7 weeks ago (May 8, 2015)

In the last paragraph, did you mean to say, " 125% of the continuous load"?

Tip of the Week: Practicality Forms the Basis of NFPA 70E Commented on: 8 weeks ago (April 30, 2015)

PLC Training - Good Point: 70E is the minimum starting point for "...practical safe working area..." regarding electrical work. One can and should improve upon the requirements in 70E however and...

Secrets of the Code-Making Process Commented on: 19 weeks ago (February 16, 2015)

Thank you Krista for another brief, but excellent explanation about a source of many misconceptions in our industry. Something I have been told and did not notice was that the proportion of any...

Equipment Grounding Conductors and Voltage Drop Commented on: 19 weeks ago (February 16, 2015)

Did a fast check and could not find an alternative for an inadequately sized EGC in Type MC cable other than using cable tray as the EGC as allowed by Sections 250.118(11) and 392.60.


NEC: Grounded Conductors, Part 1 Commented on: 25 weeks ago (December 31, 2014)

A correction needs to be made to the last paragraph.

IEEE 142-2007, "IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems," is The Green Book.


Code Quiz: Motor and Controller Disconnecting Means Commented on: 27 weeks ago (December 21, 2014)

I agree with Alan. From the information presented in the question both disconnects comply with Section 430.102. At the same time, no information was given to indicate the disconnects were or were...

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