Does Mysa require a ground wire?

Mysa V1-0 is the only Mysa model that will require the ground wire to be connected to the Mysa green ground wire.

For all other Mysa thermostats, the ground wire is not required and can simply be capped and returned to the gang box.

After, testing and review Mysa determined that newer models do not need a ground to protect the AC from crossing to the DC since both power domains are completely isolated.

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