When choosing a grounding electrode for an installation, it is important to consider the level of protection required for the application and the design life of the building. Merely complying with the National Electric Code is not always sufficient. Electrical System Grounding Requirements Electrical power distribution systems are typically required by the designer to have [...]
(No Ratings Yet)
Before any risk is ever taken, test pilots, race drivers, mountain climbers, and sky divers make meticulous preparation for their personal safety. Electrical inspectors also face risks every day just doing their jobs. For example, have you ever received a shock while inspecting? Or accidentally faulted a circuit between phases or to ground? Or tripped [...]
(No Ratings Yet)
IAEI members have opportunity and responsibility, through the NEC process, to support what we believe to be practical safeguarding of persons and property arising from the use of electricity. In this article, I would like to review the history of the NEC requirements for the use of GFCI protective devices and to consider the possibilities [...]
(No Ratings Yet)
Recently there have been several questions about the locations of grounding connections to the grounded conductor. Before looking at some of the requirements specific to grounding locations and the reasons behind those rules, let’s review some basic rules that apply to the grounded conductor. I guess the first thing that should be pointed out is [...]
(No Ratings Yet)This article defines continuous loads, explains why this definition is important, and demonstrates how wiring methods affect the ratings of continuously operated electrical equipment. We begin with Canadian Electrical Code, Rule 8-302(2) which specifies the following: “A load of cyclic or intermittent nature shall be classified as continuous unless it meets the requirements of Rule [...]
(No Ratings Yet)
What Is Significant? In the March/April issue of IAEI News, I discussed what I think is the most important change coming in the 2007 edition of the National Electrical Safety Code. That change is the addition of a third loading requirement, extreme ice and concurrent wind, to the strength and loading sections of the NESC. [...]
(1 votes, average: 4.00 out of 5)Canadian Electrical Code recognizes the fact that conductors used in any location must be protected against adverse effects of moisture, corrosive action, temperature and mechanical impact. Rules 4-006 and 12-100 of the CE Code state that the selected conductors must be suitable for condition of use in accordance with provisions of Table 19. Table 19 [...]
(No Ratings Yet)
As I make presentations on photovoltaic power systems and the National Electrical Code around the country, I frequently talk to inspectors who have as little as 15 minutes to make a residential electrical inspection. A common question is, “Can I inspect a residential PV system in 15 minutes?” This article will examine that question and [...]
(No Ratings Yet)If you’re in the electrical industry, you’re always thinking about today. How can you get more projects today? Is your cash flow sufficient for today? Is my bid competitive? What are your competitors doing today? However, you can’t forget about tomorrow. Specifically, you need to make sure you’re building sufficient financial resources to enjoy a [...]
(No Ratings Yet)
To reduce electrically related deaths and injuries through public education, the Electrical Safety Foundation International (ESFI) has joined with the Canadian Standards Association (CSA), Underwriters Laboratories, Inc., the National Electrical Manufacturers Association (NEMA), and the Consumer Product Safety Commission to disseminate information on new requirements for ground-fault circuit interrupters. These new requirements offer a significant [...]
(No Ratings Yet)
IAEI, as the keystone of the electrical industry, is a membership driven, non-profit association promoting electrical safety throughout the industry by providing premier education, certification of inspectors, advocacy, partnerships and expert leadership in Electrical Codes and Standards development.
Bad Behavior has blocked 2543 access attempts in the last 7 days.