I need to install a couple of Iso. gnd. outlets. I was going to use 12/3 and attach the bare conductor to the box, the white to neutral, black to hot, and tape the red green and go to the outlet ground and tape the other end green at the panel for the ground bar. Is the correct? Also wanted to know what is the advantage to using the Iso. gnd. outlets. thanks
What the heck are you talking about, tape the red green etc. Where are you trying to install the isolated ground, residential, commerical or industrial. What is the voltage and what type of panelboard/load center to you have. If this is residential and the ground and grounded conductor are bonded you can not do what you want without seperating the ground and grounded conductor. Heavy electronics used to require isolated grounds but todays thinking has changed depending on heavy motor loads and harmonics.
What is the advantage of an isolated ground receptacle? In most cases none.
You can re-identify the red as the iso ground however you need to consider a few points and what that isolated ground conductor is going to do for you.
First, both receptacles should be individual home runs or at least the isolated grounds need to be run individually back to the panel from each receptacle.
Second, in your case, instead of going to all that trouble just use plastic boxes, a regular receptacle and 12/2 NM home runs from each receptacle back to the panel. You now have your isolated ground without all the agravation.
[This message has been edited by hbiss (edited 12-22-2004).]
Plastic boxes in commercial work? eeesh. It's available in Canada and it's code for us too now, we must use a proper 12-3 BX wire with the black, white, and green coloured conductor along with a bare ground. Taped red's are no longer acceptable!
Re: Isolated ground outlets#46471 12/23/0401:19 AM12/23/0401:19 AM