When refrigerants are mishandled, they can cause environmental contamination and disease. Regulations and standards govern technician training, where and how refrigerants are sold, equipment, and…
Loop (impedance) testing assures that fuses and circuit breakers installed in an electrical system will still operate if a fault occurs. When a fault occurs,…
Potato peelers are wobbly, swiveling back and forth, so that you can glide this sharp prepping tool both up and down the potato without having…
ANAB’s Field Evaluation Body (FEB) program for NFPA 790, Standard For Competency Of Third-Party Field Evaluation Bodies, and NFPA 791, Recommended Practice And Procedures For…
An average modern car has between 1,400 to 1,500 semiconductor chips: tiny electronic components that control everything from emissions systems to driver assist systems. Given…
Almost three in five fatal work injuries (56%) in 2020 were caused by direct exposure to electricity. These injuries were specifically caused by direct contact…
Control panels are more than simply cabinets with stuff inside them. They guard the internal components from the environmental extremes of temperature, moisture, vibration, and…
In 215 BC, the Greek mathematician and engineer Hero of Alexandria invented the first vending machine. The device accepted coins that would fall on an…
The concept of electric cars is not recent. In 1884, English inventor Thomas Parker built the first electric car for mass production. The electrical vehicle…