Gbart
The Hubbel web-site goes into explaining the workings of an Isolated Ground Circuit. Voodoo uses a Hubbel IG 8300 which is a standard outlet available from Hubbel just that Voodoo cryogenically treats it. And IG stands for, you guessed it, Isolated Ground.
I have not heard the one the OP makes reference to.
The Hubbel web-site goes into explaining the workings of an Isolated Ground Circuit. Voodoo uses a Hubbel IG 8300 which is a standard outlet available from Hubbel just that Voodoo cryogenically treats it. And IG stands for, you guessed it, Isolated Ground.
I have not heard the one the OP makes reference to.