EC&M - Latest Comments

Re: Friendly Competition

Dmoore — Fri, 01 Jun 2012 21:57:13 -0000

More like a Turns to Turns ratio test, or Winding resistance testing.

Re: Illustrated Code Catastrophes, May 2012

Russell Minor — Fri, 01 Jun 2012 17:28:21 -0000

The too close for comfort article would have been more interesting if the mechanical code were addressed. The access service space for servicing the electrical, and the mechanical part of the equipment, and guard rail protection, where located to close to a drop off. There is an indication of oxygen storage just below the equipment. To close for comfort. If these rules were not complied with should the qualified electrical person refused refused to wire the equipment? If the mechanical code was followed the electrical would have not been a problem.

Re: Wind Service

Rickmac99 — Thu, 31 May 2012 09:06:33 -0000

I have mixed emotions about wind power. It is not the "free ride" that people imagine it being where you "set it and forget it".

There are maintenance and installation costs to consider plus monitoring of individual generators. In a power plant you have a few turbines in a central facility that is on the ground.

Re: How to Select Motors for Hazardous Locations

John C Mitchell — Wed, 30 May 2012 14:45:53 -0000

Is a Class 1 Group C/D motor that gets immersed in fuel from a ruptured tank safe from preventing a fire?

Re: Grounding Versus Bonding Webinar:On-Demand

meby — Tue, 29 May 2012 09:19:35 -0000

We will be sending out a Letter of Attendeance to all of the people that particpated in this event.

Re: New York City Salon Cuts Energy Costs By 74% With LEDs

oakdale — Tue, 29 May 2012 07:40:53 -0000

What is the amount of the savings (and whats the rate of purchase) and what was the system cost? Running stories like this without all the info just looks to me like a LED sales pitch.

Re: Code Q&A

Richardb — Fri, 25 May 2012 17:05:56 -0000

The response does not seem to answer the question. What information does the Code require on the label?

Re: Grounding Versus Bonding Webinar:On-Demand

Mario deleon — Thu, 24 May 2012 15:54:55 -0000

Are CEU's going to be given to those who participate this webinar: Grounding Versus Bonding with Mike Holt?

Re: The Basics of Isolated Grounding Receptacles

Ndamacio — Wed, 23 May 2012 03:38:01 -0000

Can I use metal box as a pull box grounding system?

Re: Whats Wrong Here?

Jenne Vinodrao — Mon, 21 May 2012 02:45:06 -0000

cable gland and enclosure is missing

Re: Whats Wrong Here?

Willis — Fri, 18 May 2012 13:30:02 -0000

It looks like a three phase disconnect that has had a fuse holder to go bad and they eliminated the fuse holder and tied the wiring together. An accident waiting to happen

Re: Stumped by the Code? April 2012

Usnretmike — Thu, 17 May 2012 13:29:58 -0000

I am looking for help on a question. " A self contained space heater may be plugged into a standard receptacle. True or False?" Give the NEC article that supports your answer. I have looked at Articles 422.33, 424.3 (A) and 427.55 (3) Assistance Please

Re: The Shocking Truth About Grounding Electrode Conductors

Carl — Thu, 17 May 2012 09:38:45 -0000

Ed and Paul, thank you!! you have no idea how hard it is to find factual information regarding the nature of electricity. this article is extremely helpful and informative. thanks again, and please keep up the writing.
sincerely,
carl borders

Re: Code Q&A

Bradbosshart — Wed, 16 May 2012 18:40:14 -0000

What about spacing of electrical outlets in bathrooms in commercial buildings. Does the 3' from the basin apply?

Re: What Lamps Will Be Phased Out?

Anon — Wed, 16 May 2012 16:11:25 -0000

I understand that many lamp manufacturers are no longer producing 6-foot T8 lamps as well. Can anyone explain why that is?

Re: Achieving Discrimination of Circuit Breakers in Computer Rooms

Phathilizwe Ndamase — Sun, 13 May 2012 11:27:00 -0000

Thank you for this article , it has solved my confusion on the cause of a tripping upstream MCB.Fabulous!

Re: Commercial Loads — Part 2

Muawiy — Thu, 10 May 2012 08:58:59 -0000

I have 3 floor each floor 1400 Sqm I am looking the calculation method for that

Re: Ground Testing Techniques

Anil k kar — Wed, 09 May 2012 19:12:44 -0000

Some old industrial plants have Ufer grounding and there is no pig tail to test the ground resistance. I would like to know your ideas for testing the ground resistance.

Re: Palatine Parking Garage LED Retrofit Is a Drive-Away Success

Stu Russell — Wed, 09 May 2012 19:07:18 -0000

This sounds like a great project.. But, why did it take federal stimulus money to do it? If the payback is 1..22 years, why didn't the city pay for it without the grant?

Re: Understanding NEC Circuit Classifications

DC — Wed, 09 May 2012 17:17:42 -0000

What is a Class 2 Circuit?

Re: Specifying the Right Fuse for Circuit Protection

David — Tue, 08 May 2012 19:38:06 -0000

Excelent article. I've saved this information for teaching purposes only.
I'm a teacher for electricity signatures at college.Thanks for sharing.

Re: Line Reactors and VFDs

Mcsc — Mon, 07 May 2012 22:51:15 -0000

what kind of line reactor should i use on a 400 hp electric motor 5%,3% or 1.5% Impedance

Re: Troubleshooting Residential Submersible Pump Systems

Ski_daddy02 — Mon, 07 May 2012 19:35:39 -0000

tried to start well hasnt run in 6 years no water pulled submersable pump 3 hundred feet cleaned every thing and pipe dry run few secound put back in try again no water and can see by meter running for a few min. and trips internal overload ? thank you

Re: Troubleshooting Residential Submersible Pump Systems

Alvagp — Fri, 04 May 2012 19:16:26 -0000

If there are three wires going down to the submerged pump black, red, white or yellow is it likely that the one (red) wire is start and one (black) wire is run and the last is common? I am pretty sure the capacitor is in the pump.

Re: Whats Wrong Here?

Reichmand — Fri, 04 May 2012 12:38:43 -0000

Hey, that's not plumbing pipe-it's rigid conduit. Only problem is the elbows are not listed for this use and the AHD would need to grant a special dispensation-may not be too likely but then again!!