The counterfeiting of money is one of the oldest crimes in history. At some periods in early history, it was even considered treasonous and was punishable by death. During the American Revolution, the British counterfeited U.S. currency in such large quantities that the Continental currency soon became worthless. “Not worth a Continental” became a popular [...]
(No Ratings Yet)
Have you run into a new electrical product on the job site lately? Have you seen something new and wondered where it came from? Have you noted that it was listed but didn’t know how it was intended to be installed or used? Have you had to call for help or delay an inspection until [...]
(No Ratings Yet)
This article describes the operation and maintenance of a low-voltage power system used to power a jazz restaurant-cafe. Not necessarily an important factor in the national economy, but problems encountered and described herein may be representative of many small commercial operations, such as restaurants, grocery stores, drug stores, and similar sized shops. When engineers consider [...]
(No Ratings Yet)A new Agreement on Acceptance of Components for selected electrical products was recently signed by CSA International (CSA) and Underwriters Laboratories, Inc. (UL). Under the terms of the agreement, UL will no longer require retesting of many CSA-certified electrical components when performing end-product evaluations of low voltage distribution and control equipment. While CSA’s general practice [...]
(No Ratings Yet)
In many electrical installations today, some protection needs extend beyond the installation requirements of the Code. Static electricity and the buildup of static charges are major concerns in many installations such as data processing centers, semiconductor facilities, and many hazardous (classified) locations. In the information technology (IT) world, minimizing static electricity and circulating currents is [...]
(1 votes, average: 4.00 out of 5)According to the National Fire Protection Association (NFPA), in 1999 there were an estimated 38,400 total electrically-related home structure fires, with electrical wiring including switches, receptacles and outlets accounting for 16,300, and cords, plugs and extension cords accounting for another 6,400. As a result, the ESFI is working to raise safety awareness related to outlets [...]
(No Ratings Yet)
Maximum Tension Since the National Electrical Safety Code (NESC) minimum vertical clearance between conductors at supports and between the conductors and ground are a function of the sag of the conductors, some utilities might choose to reduce the sag by installing their aerial conductors at the highest tension for which they are allowed without exceeding [...]
(1 votes, average: 5.00 out of 5)Canadian Electrical Code, Rule 10-814 is where we find the minimum bonding conductor sizes for electrical circuits. It’s a fairly straight forward rule, simple to understand and it gets used quite a bit, since most electrical circuits require bonding to protect us against fire and shock hazards. But does everyone interpret and apply the rule [...]
(No Ratings Yet)
Empirical data indicates that around 80 percent of all electrical interruptions are attributable to ground faults that are a result of an unintentional connection between system conductors and ground. The term grounding is commonly used in the electrical industry to mean both “”equipment grounding”” and “system grounding.” System grounding means the intentional connection of a [...]
(2 votes, average: 3.00 out of 5)It’s the time of year again when electrical safety is stressed. May is National Electrical Safety Month. Even though we all know and realize that safety is important all the time, it is proper to remind ourselves from time-to-time of not just electrical safety, but being safe in all that we do, at home, at [...]
(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 2542 access attempts in the last 7 days.