Re: Grounding, furnas switch

Gary Johnson

Regardless of age, ALL motors must be properly grounded for the safety reasons previously stated. A very old one may not have a designed-in ground screw. In that case, you may add one in a sensible location at the terminal box. Alternatively, you can run a bonding conductor to the frame of the motor and connect that directly to another properly-grounded item such as a switch box. 

Modern safety standards are written in blood. Grounding is really simple to do and there is no reason to skimp in this area. "If there's power running to it or through it, ground it."

Gary NA6O
(Retired EE)

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