William Oh

William Oh is general manager of Electro Static Technology. He has extensive design and application experience in both automation and product development, specializing in the mitigation of unwanted electrical currents. A member of the Illinois Tool Works Patent Society, he holds degrees in mechanical engineering from Pusan National University and the Korean Advanced Institute of Science and Technology. He also spent three years as a visiting researcher at the University of Massachusetts.

ARTICLES

Preventing Induced Electrical Damage

April 9, 2007
Today, the challenge facing system designers and engineers is to minimize damage to ac motors from shaft current. A VFD induces destructive voltages that build up on the motor shaft until they find discharge paths to the frame.
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2014 ACI Home Performance Conference

The 2014 ACI National Home Performance Conference & Trade Show was held in Detroit.

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Jeff Hutchinson, Energy Solutions Manager for mechanical contractor Bruner Corp., talks about the ductless market and how it can be profitable for a commercial contractor.

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ACHRNEWS

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2014 July 21

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R-22 PHASEOUT POLL

Some in the industry are calling for the EPA to halt production of R-22 as of 2015. What do you think?
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HVACR INDUSTRY STORE

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2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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