Not just in print, the current issue of IAEI News is also available online. July-August 2010 is available now for you to flick through from cover to cover online! Try it out and give us your feedback. We would love to know what you think.
Boxborough, MA – July 21, 2010 – Intertek, a global leader in testing, inspection and certification, will be hosting a full day of complimentary technical seminars. Topics of the seminars will include EMC (Electromagnetic Compatibility) and Military EMC testing; Hazardous Locations (HazLoc) testing; and pending changes to the US Environmental Protection Agency’s ENERGY STAR® program. [...]
The Basics of Selective Coordination Merely having a higher ampere overcurrent protective device (OCPD) feeding a lower ampere overcurrent protective device does not assure a circuit is selectively coordinated. Designing a selectively coordinated system takes a knowledgeable person who is capable at the task and who has the necessary data available to select the proper [...]
Tenants of the Time & Life Building in New York’s Rockefeller Center include Time Inc., publisher of more than 100 magazines. In an effort to “green” the building, shaft grounding rings have been installed to protect the bearings of HVAC fan motors. Proper tuning of a variable frequency drive’s output range and proper grounding of [...]
In the course of daily business, I get some questions repeated many times. I try to address these areas of common and frequent interest in this series of articles, but there are always a few that need clarification or repeating. Inverter DC Grounding Electrode Conductor In the “Perspectives on PV” in the September-October 2009 IAEI [...]
Air conditioning is a twentieth century phenomenon. The Romans had aqueducts. The British discovered electricity. The Americans had an engineer whose invention to control temperature and humidity changed the world forever — welcome to the air conditioner. As we rush through the routines of our daily lives, it’s amazing how quickly the seasons change; winter [...]
It is impossible to know the answers to all of the questions we are faced with on a regular basis; each job site will have unique and nuanced requirements. That said, it is critical to know appropriate and knowledgeable resources. Early in my career with Eaton Corporation, I worked in a technical application call center [...]
The Canadian Section of the International Association of Electrical Inspectors has revived the Canadian Certified Electrical Inspectors (CCEI) Program. Certification categories include Electrical Installations, Electrical Investigations, and Electrical Product Approvals. The major objectives of the CCEI program are: • To certify a national standard for all persons regularly engaged in the inspection of, or the [...]
Let’s acknowledge a few undisputed facts: 1. All electrical equipment used in installations under provisions of the CE Code, Part I must be approved , and it must be of a kind or type and rating approved for specific purpose for which it is intended to be utilized (Re: Rule 2-024). 2. Word “approved” (in respect [...]
Rule 10-812 specifies minimum grounding conductor sizes for low-voltage electrical systems up to 750 volts. This article discusses the complexities of this rule, which as you know, was revised in the 2009 Canadian Electrical Code.
Question: Has UL Listed any cord-and-plug connected central air-conditioning units, central heating furnaces or storage tank water heaters?
Question: NEC-2008 has added concealable nonmetallic extensions to Article 382. Are any concealable nonmetallic extension products listed?
Question: Does UL apply a Listing Mark to a product based on evaluation to an Outline of Investigation?
In the fall of each year, IAEI members gather in each of the six sections to celebrate and to share the answers they’ve discovered. One of my fondest memories is my first visit to a code breakfast — at the Eastern Section, I think. The room was packed, plates were loaded with scrambled eggs, sausage [...]
No race car driver or their pit crew would question the importance of using the proper tool and the proper torque on lug nuts. Yet many electricians go to work every day and tighten electrical connections with no more than a folding Allen set. Every electrician has a responsibility to understand how to install conductors and make connections according to manufacturer instructions. Equipment, including conductors and connectors, is manufactured, tested and listed to be installed as specified by the manufacturer.
