Where should the motor housing ground be connected?
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I’ve seen some motors that are grounded only at the anchor bolts, without grounding at the enclosure, right? Thank you.
The foundation bolts are not properly grounded. Most motors come equipped with grounding screws; if there are no such screws, find a spot on the motor itself where the wire ends can be pressed together, for example, by using the screws of the motor fan
Nowadays, motors generally come with grounding screws
Small motors generally don’t have dedicated grounding screws
Either a grounding flat bar or a grounding wire will do