Sharing ground wire between two dedicated circuits


Planning to install two dedicated 20amp circuits with Romex 10/3 and 10/2 Cable. The run is about 70 feet. Have learned that the 10/3 as an insulated ground versus 10/2 which has a ground wire but it's not insulated.

Idea has been proposed to share the insulated ground from the 10/3 wire with the other 10/2 dedicated circuit. Achieves the same thing at a lot less cost? Does this make sense?

 

 

emergingsoul

... connecting grounds any where besides earth creates a ground loop.

It’s not clear what you’re trying to say. A ground loop occurs when there are two or more paths to ground at different potential (voltage). You can have a dozen ground paths and if they’re all at the same potential you’ll have no issue.

In the US, a residential system’s safety ground will be bonded to the service panel’s neutral buss bar, which is also bonded to the electric utility’s neutral.

 

So it sounds like having an insulated ground back to the panel doesn't matter.  What about interference, all that noise and crap being diverted back to the panel via ground.  Why would I want noise from in uninsulated ground to be used???

@fuzztone Wrote:

I would never waste any money on Romex.

Nothing wrong with Non Metallic cable AKA Romex,  in my opinion, steel  armored Metal Clad cable, with steel receptacle boxes is better for dedicated audio circuits. Example: better shielding from electric fields and radio frequency interference.😎

Mike