On Friday, June 11, 2021 at 9:15:06 AM UTC-4, Scott wrote:
Test continuity from casing to hot side of plug. If the circuit (before the motor) is touching the casing, having the saw grounded will trip the breaker. Without a ground it could spin up. Casing would be hot.
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....and just so that there is no confusion here, a hot case is extremely dangerous.
Do not remove the ground as a test unless you are 100% sure of what you are doing.

Unplug the device before testing continuity from the casing to the hot side of plug.