Silly question...

[emahler]

we don't use much NM-B, but I know that they are coming out with all types of special cables (12-2-2, etc)....

here is the question, have they come out with a 12/2 romex with 2 grounds? and insulated and a bare in the same outer sheathing?

and would this be legal for the patient care area in a dentists office?

no, i haven't look it up...just thinking...thanks

 

[augie47]

no and no
517.13
(A) Wiring Methods. All branch circuits serving patient care areas shall be provided with an effective ground-fault current path by installation in a metal raceway system, or a cable having a metallic armor or sheath assembly. The metal raceway system, or metallic cable armor, or sheath assembly shall itself qualify as an equipment grounding conductor in accordance with 250.118.

 

[emahler]

thanks...told you it was a silly question...

 

[480sparky]

thanks...told you it was a silly question...

Not silly at all. We're all ignorant..... just in different areas.

 

[emahler]

Not silly at all. We're all ignorant..... just in different areas.

i bet you i got you beat

 

[360Youth]

thanks...told you it was a silly question...

I have been on a CS Lewis kick lately, so here you go...

"Can a mortal ask questions which God finds unanswerable? Quite easily, I should think. All nonsense questions are unanswerable. "


All kidding aside, it is amazing how many different products I have learned of since perusing around here, so it is never a silly question to ask of such things.

 

[infinity]

A 12-2 with two grounds could be used for isolated ground circuits.

 

[nolabama]

dumber question wouldnt 12-2 with an inuslated and bare ground be 12-3 with one of the wires green instead of red - and if so wouldnt a roll of green tape fix that ?

 

[mxslick]

dumber question wouldnt 12-2 with an inuslated and bare ground be 12-3 with one of the wires green instead of red - and if so wouldnt a roll of green tape fix that ?

I think the 12-2-2 is actually 2 hots, two neutrals and a bare ground.

Brought about because of those PITA AFCI's.

 

[emahler]

A 12-2 with two grounds could be used for isolated ground circuits.

with a plastic box, 12-2 with 1 ground could be used for an IG circuit

 

[480sparky]

A 12-2 with two grounds could be used for isolated ground circuits.

How would you keep them (being bare and all) from each other when you screw the recep into the box?

 

[emahler]

dumber question wouldnt 12-2 with an inuslated and bare ground be 12-3 with one of the wires green instead of red - and if so wouldnt a roll of green tape fix that ?

not for an inspector

 

[Fulthrotl]

I have been on a CS Lewis kick lately, so here you go...

"Can a mortal ask questions which God finds unanswerable?

actually, no.

can God's answer to an unanswerable question be in a form
that a mortal is unwilling to accept?

here we go.........
this is meaner than smearing peanut butter on the roof of
a dogs mouth.

randy

 

[360Youth]

this is meaner than smearing peanut butter on the roof of
a dogs mouth.

randy

It's been years since I've done that. Ahhhh, the memories.

 

[480sparky]

i bet you i got you beat

I'll concede that one.... I guarantee I'm more ignorant than you!:smile:

 

[nolabama]

the only thing we use 12-2-2 for here is heater/vent/light switch legs - what do you mean that this came about for AFCI's ?

 

[Pierre C Belarge]

dumber question wouldnt 12-2 with an inuslated and bare ground be 12-3 with one of the wires green instead of red - and if so wouldnt a roll of green tape fix that ?

take a peek at 250.119.

 

[480sparky]

the only thing we use 12-2-2 for here is heater/vent/light switch legs - what do you mean that this came about for AFCI's ?

You can't use 12/3 or 14/3 for two AFCId circuits. So 14-2-2 and 12-2-2 were developed.

 

[nolabama]

"take a peek at 250.119"
the continuous part messes that up

 

[nolabama]

You can't use 12/3 or 14/3 for two AFCId circuits. So 14-2-2 and 12-2-2 were developed.

i guess i dont follow - AFCI's are mostly only put in for inspection 'round here and promply pulled out - so you guys pull two homerun circuts on a 12-2-2 (its even refered to as 12/4 here) and j-box when you get where your going??