My Sat is not grounded.I didn't think it had to be.
The manual doesn't say it has to be or even the sat company.
I would think if it was mandatory that they would say.
I have had no troubles with the sat,noise or anything(clear as a bell).
I will say that a year or so ago we had a nasty lightening storm here and I had my computer plugged into a monster conditioner(forget which one) and my audio gear plugged into the Torus(15a)+sat and TV back then.
We'll my computer was toast and the monster(I replaced the computer)chucked the monster

..
The Torus was still on but all amps,components went into standby

..
i guess I'm getting a little off track( I do tend to get a bit excited).
If my sat isn't causing me grief I don't see a need to ground it,
If she ain't broke why fix it,works for me.