Why not use a POWER STRIP?

[eflyguy]

There is no issue with “cheap” surge protectors, they will not affect the way the machine operates. The concern over multiple protection devices in parallel is unfounded.

GF and CF on power strip

MOVs are installed in parallel inside many surge suppressors to increase energy handling capacity. There is no harm in running multiple strips in series, you’re just adding more varistors in parallel.