Does the emt need to be grounded?

[acer66]

Hi,
I am running 2 UF wires, 12/2 & 6/2, from an interior panel to an exterior disconnect.
Doing so I have go through a room where the UF will be in a 2” emt which ends in an exterior wall.
The emt is not connected to any electrical boxes and is only used to hide the UF wire in that one room I have to go through
so my question is does the emt have to be grounded?

Thank you

 

[Bert_]

Yes.

 

[Kaizen]

How would one ground a conduit not ending at a box or device?


Sent from my iPhone using Tapatalk

 

[Bert_]

Could use a ground clamp for pipe, a connector on one end with a grounding bushing ( the ends need to be bushed anyway). I'm sure there are other ways also.

 

[acer66]

Could use a ground clamp for pipe, a connector on one end with a grounding bushing ( the ends need to be bushed anyway). I'm sure there are other ways also.

The emt ends on the interior side in the room where the main panel is located
around 6’ above from the main panel.
Can I run a ground wire from the main panel to the grounding bushing at the emt?
All the other wires powering the house run up from the panel
and pass the new emt in very close.

 

[pattenp]

No, because the EMT in your case is a sleeve and there are no splices or wire connections in it. It's not considered a conduit system. You do need bushings on the ends of the EMT

 

[acer66]

No, because the EMT in your case is a sleeve and there are no splices or wire connections in it. It's not considered a conduit system. You do need bushings on the ends of the EMT

Just to clarify, no on the grounding and yes on the bushings?




Edit, We are under the NEC 2014 and it will be inspected.

 

[pattenp]

Just to clarify, no on the grounding and yes on the bushings?

No for grounding and Yes for bushings.

 

[pattenp]

Use PVC conduit and its a mute point.

 

[acer66]

Use PVC conduit and its a mute point.

That would make things to easy.

 

[Bert_]

No, because the EMT in your case is a sleeve and there are no splices or wire connections in it. It's not considered a conduit system. You do need bushings on the ends of the EMT

Looks like you might be right, 250.86 exception 2. I guess it also depends on what we consider a "short section".

 

[ard]

IMO its gonna depend on the inspector. They get to decide if it is or is not a 'short section'

 

[acer66]

Thanks guys, I will let you know what happens.

 

[sberry]

Any metal that has the potential to become energized should be grounded. If there is an exception then there is.