HVAC equipment can fail with voltage drops of just 10-15% lasting 1 second or longer (NEMA MG-1) What Are They? Brownouts are sustained periods of reduced voltage lasting more than one minute, ...

As Murphy would have it, just as the temperature and humidity became unbearable this summer my central air conditioning system went out. Then realization struck, this could easily have been detected ...

If you've ever wondered how electronic devices manage to control circuits with precision and safety, you're thinking about the magic of relays. Relays act as the unsung heroes in many of our devices, ...

Improper voltage is the one of the greatest causes of failed compressors in three-phase units. We are allowed a 10% deviation over or under the unit nameplate-rated voltage. Most technicians know to ...