diryground/clean ground

[grumpy11]

furniture partion calls for two ground one clean- one dirty.


now if the diry ground goes to the equipment ground bar in panel.

where does the clean ground go there is no ig ground bar in panel and don't believe that the outlets for clean ground are isolated ground outlets

 

[infinity]

If the system makes no provision for an IG then the two grounds would get connected together.

 

[grumpy11]

that's the way i see it and since its not an isolated ground and only bonds they still would have to be bonded to the splice box when splicing . the design makes no sense to me.
it really should be clean bond /dirty bond.
and they both go to the same equipment ground bar in panel.

 

[kwired]

If there is a specification requiring isolated grounds at specific outlets and there is no current provision for IG in the system, to me that means IG needs not only run to the specified outlets, but also back to the service so that there is provision for IG when all finished.

Whether or not an IG is really necessary is more of a design decision instead of an installer decision, but if deemed necessary you either do it right or waste time and materials if you do it wrong.

 

[GoldDigger]

furniture partion calls for two ground one clean- one dirty.


now if the diry ground goes to the equipment ground bar in panel.

where does the clean ground go there is no ig ground bar in panel and don't believe that the outlets for clean ground are isolated ground outlets

Does the partition system specify one set of receptacles as for computers? Some I have seen label them A, B and C and tell you to connect computers to C, for example. (Although these days, what else would you be plugging in?)
Although the receptacles may not all be IG, they may use different EGC connections if they are mounted to plastic boxes. As far as the panel goes, the idea of IG is that they clean ground should go all the way back to the point where the system bonding jumper and the GES connection are located, but even if they just follow separate paths back to the first panel you hit that will still reduce any coupling of stray ground currents from some equipment into ground noise for other equipment.

 

[grumpy11]

i believe that's the way it call out clean ground for computer outlets all going back to the equipment ground bar in panel.but hence if i put a box in the wall for the whip for the furniture feeds and make a splice in the circuit wires and the ground/bond wires they have to be bonded to box 250.148.

again its not an IG ground .its a bond the way i see it.

 

[Ravenvalor]

i believe that's the way it call out clean ground for computer outlets all going back to the equipment ground bar in panel.but hence if i put a box in the wall for the whip for the furniture feeds and make a splice in the circuit wires and the ground/bond wires they have to be bonded to box 250.148.

again its not an IG ground .its a bond the way i see it.

The whip usually has an IG ground and a regular ground. The circuit IG ground only has to be connected to the IG ground in the whip on one end and a ground bar in the service panel on the other end.