Adding liquidtight to rigid metal conduit

[BlueBaron]

Hello I have an existing run of rigid metal conduit outside of my house that feeds several outdoor receptacles. There is no separate ground wire inside the rigid metal conduit. Is there a way that I can use liquid tight to run to a new extension receptacle? What I am particularly concerned about is how to make sure that I have the grounding right. There is no existing ground wire within the rigid metal conduit. Thank you

 

[BlueBaron]

Open up the panel and see if the conduit is in the panel with a lock nut to tighten it down

Thank you Megawatt. The conduit is in the panel with a lock nut tightening it down. But shouldn’t I still test somehow to make sure there isnt some break or interruption in the conduit?

 

[Megawatt]

Thank you Megawatt. The conduit is in the panel with a lock nut tightening it down. But shouldn’t I still test somehow to make sure there isnt some break or interruption in the conduit?

Yes test and make sure that you have good continuity from the panel to the boxes

 

[BlueBaron]

Yes test and make sure that you have good continuity from the panel to the boxes

Megawatt, Thank you. Could you please tell me what the simplest ways to do this? Thanks so much for your help. I’ve gotten a ton of great help from this forum.

 

[Megawatt]

Megawatt, Thank you. Could you please tell me what the simplest ways to do this? Thanks so much for your help. I’ve gotten a ton of great help from this forum.

The best way I know is if you have a meter and put it on the OHMS setting and get a long piece of wire long enough to get to your panel and attach it to your last receptacle grounding electrode. On your meter Red lead on your neutral bar and the black lead on the wire coming from the last receptacle. It’s a little unorthodox but it works. You are looking for continuity between the panel and your receptacles

 

[norcal]

Metallic liquid tight conduit in under 6' lengths & circuits 20A is usually permitted for grounding*, I don't really care for it, but there are other ways too.

*It should be printed on the jacket.