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January-February 2012
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January-February 2012 CoverJanuary/February 2012

TABLE OF CONTENTS

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Features

Wiring Methods

by Steve Douglas

Section 12 of the Canadian Electrical Code covering Wiring Methods has seen nineteen rule changes and seven new rules for the 2012 CE Code. The first revision is to change the size of the sand cover used for direct buried conductors or cables from 6 mm to screened sand with a maximum particle size of 4.75 mm in Subrule 12-012(4). The reason for the change was to recognise standard sieve sizes detailed in ASTM Standard D 2487. Read more


Perspectives on PV

Questions from Inspectors — Inquiring Minds Need to Know

by John Wiles

The following questions and answers result from some of the more common situations that many inspectors face throughout their working day when seeing a new PV installation or reviewing a set of plans for a PV system. The questions are simplified versions of questions I receive in e-mails and from questioned plan sets as well as sometimes long, involved phone calls. Read more

Dangerous Ignorance

by David Shapiro

With the pressure of a depressed economy, knowledgeable contractors are seeing more and more work going to electricians who are working outside their areas of expertise. If you have found a good answer to this problem, we need to hear it. Read more


Smart Meter Numbers, Benefits Expanding

by Lisa Wood

The term smart meter is becoming much more common around the country. These new digital meters for recording electricity use are replacing the traditional analog meters that homes and businesses have used since the early 20th century. Read more

Stan Benton — 2012 International President

by Stan Benton

We should never forget our past; we should always work in the present, and steadily prepare for the future. As your 84th International President, representative from the Southern Section and the first from the great state of Alabama, I recognize that I am only one of many. Many of whom came before me with great vision and enthusiasm which I can only hope to emulate. Read more


Article 210, continued

by Randy Hunter

Part II of Article 210 deals with Branch-Circuit Ratings, starting with conductor sizing. These are some pretty basic rules so we will just cover the highlights here. First, the conductors have to be sized for the loads they will serve. There are two basic types of loads, which are categorized by the length of time they will be used. Non-continuous loads are those loads that are turned off and on frequently. Continuous loads are loads that run for three hours or more without interruption. Read more

Who Are Our Future Electricians?

by Michael Savage, Sr.

It has been estimated that by the year 2014, the construction industry will face a deficit of more than 1.5 million craft professionals, and 20% of the construction workforce will retire in the next two to four years. Read more


Develop Greater Collaboration

by Steve Foran

Collaboration separates excellence from mediocrity. Whether it is two people in adjacent offices or an entire city electrical inspection department, if the people involved are unwilling to collaborate, they will produce mediocre results. Read more

The Roadrunner Club

by Richard E. Loyd

At the International Association Electrical Inspectors Southern Section’s 2011 annual meeting it was my pleasure and honor to present the prestigious Gold Roadrunner Award to Chuck Mello and to Mark Ode, with the assistance of John Minick and Mark Earley, the two most recent recipients’ of this award. Read more


Avoid Dangers of Over-Concentration

by Jesse Abercrombie

When you were in school, you had to concentrate on your studies. When you began your career, you had to concentrate on your work. In fact, in just about every endeavor in life, concentration is essential for success. However, as an investor, you may find that you actually don’t want to concentrate too much. Read more

Department of Energy Awards $2.5 million to Reduce Costs for Solar PV Installations

by David Clements

While real energy savings are being generated by solar photovoltaics markets in the U.S. and many American homeowners are excited about reducing their electrical costs, most of them lack funds to install the units on their roofs. Consequently, the DOE is funding a program to reduce the costs of solar PV installations. Read more



Departments

Editorial

On being true to who we are

by Kathryn Ingley

Whoever would think of Shakespeare and electrical inspections together? Throughout the preparation of this issue, my thoughts kept returning to the Bard’s definition of being real, "This above all: to thine own self be true, and it must follow, as the night the day, thou canst not then be false to any man.” It seems that many of our writers are asking how we as members of IAEI can be real to our communities and clients. Read more

Canadian Code

Neutral Grounding Devices

by Leslie Stoch

Neutral grounding devices (resistors) are used to control the ground-fault currents and voltages to ground of alternating current systems. Earlier versions of the Canadian Electrical Code restricted the use of neutral grounding devices to systems that supplied only 3-phase loads (no single-phase loads). But the 2006 Canadian Electrical Code was revised to change all of that. Now single-phase loads are permissible with conditions. Read more

Canadian Perspectives

Electrical Interlocks with a Building Fire Alarm System — Are we consistent on this subject?

by Ark Tsisserev

Design and installation of electrical equipment is a reasonably well understood and adjusted procedure. It is done in accordance with the safety requirements of the Canadian Electrical Code and specific installation standards, with additional performance criteria of energy codes, ASHRAE codes and regulatory directives, and undoubtedly — with particular requirements of the clients. Of course, such installations are inspected by the electrical safety regulators for compliance with the accepted design and with the CE Code provisions. Read more

Safety in Our States

Silos of Safety — Are We Living in the Box?

by Thomas A. Domitrovich

Living in a silo can limit your success and the success of safety in our industry — the activity of breaking down silos and building healthy bridges can elevate and strengthen your safety message. Every year, and pretty much each month, there is a state somewhere that is either reviewing or actively meeting to adopt a building code. We in the electrical industry are called to action every now and then in various states that decide adoption of the latest National Electrical Code without amendment is just not an option. Read more

UL Question Corner

Have any electric vehicle (EV) level 3 DC fast chargers been UL certified (Listed)?

by Underwriters Laboratories

Yes. A few manufacturers have had their electric vehicle DC fast chargers UL certified. Electric vehicle DC fast chargers can fully charge an electric vehicle battery in as short as 15 to 30 minutes. These fast chargers will most likely be installed at electric vehicle charging locations in public/commercial settings, such as traditional gas or service stations. Read more

UL Question Corner

Are flat cord extension cords equivalent to hard usage or extra hard usage cord?

by Underwriters Laboratories

Yes. Convention center cord sets are required to be constructed with cord that is evaluated as being equivalent to extra hard usage or "Type S” cord. These cords are typically constructed of a flat type of jacketed cord, which is suitable for the abuses that it may be subjected to by being laid on a floor in an exhibit hall. Read more

Focus on the Code

Where branch-circuit conductors pass through a panelboard and do not originate or terminate in that panelboard...

by Keith Lofland

In this instance, the panelboard is serving the function of a pull box for these pass-through conductors. A panelboard is permitted for this purpose if proper wire bending space is provided as per 408.55. Read more

Focus on the Code

When installing a supply-side bonding jumper, what are the requirements for installing such a conductor both inside and outside a raceway?

by David Williams

The term supply-side bonding jumper first appeared in the 2011 National Electrical Code as a result of a CMP-5 Task Group regarding the proposed revisions to Section 250.30 for grounding separately derived systems. Read more


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November-December 2011September-October 2011July-August 2011May-June 2011March-April 2011

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