Low-Voltage Air Circuit Breakers—A Maintenance Must!

Kerry Heid Features, Spring 2021 Features

Low-voltage circuit breakers are predominant in virtually every electrical power system. A 2008 NETA survey and associated IEEE paper showed that 22% of these breakers did not follow their time-current characteristics, and 10.5% did not operate at all when service-aged maintenance was undertaken. The majority of failures were mechanical in nature; this indicates regular maintenance must be a priority. Low-voltage …

Arc Flash Maintenance: Not All Equipment Is Created Equal

Kerry Heid Features, Summer 2020 Features

Not all equipment is created equal when it comes to production objectives versus safety objectives in an electrical power system. Certain devices should be tested and maintained to ensure uptime; others should be inspected to ensure they perform properly to protect workers in an arc flash event. When considering arc flash safety and selecting the associated PPE, the condition of …

Electrical Canada Update

Kerry Heid Specifications & Standards, Winter 2019 Specifications & Standards

There has been much emphasis in Canada recently on looking at electrical maintenance from two perspectives: safety and production. Many times, these go hand in hand. The standards committees in Canada are paying specific attention to devices that — when not maintained properly — can have an adverse effect on the electrical safety of workers. These include the most commonly …