A farmer is watering an alfalfa field 24 hours a day using a 3-phase 100-hp electric motor and adjustable speed drive (ASD). The farmer checks on his field to find the water not flowing and the pump ...

In the original version of this article, the second figure contained an error. The image has been updated. It’s important for engineers to have a good, working ...

In a 3 phase system there is a centre point. (like the optional neutral in the Wikipedia image). In domestic power this neutral point is normally grounded to earth, giving 3 phases with equal voltage ...

One of the hidden complications of upgrading grain drying and handling systems is providing enough electricity to power the new larger electric motors. Electric motors that are larger than 15 hp ...

One of the more popular three-phase electrical services supplied to medium-size commercial buildings is the Wye or Star configuration transformer. The name comes from the transformer’s secondary ...