liquidtight

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liquidtight

#99512 05/27/06 12:59 AM

Joined: May 2006

Posts: 3

Las Vegas

V

victor

OP

Junior Member

Hi I would like to know where in the NEC talks about using liquidtight conduit to connect a dry type transformer because fo vibration. Thank you

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Re: liquidtight

#99513 05/27/06 07:41 AM

Joined: Jan 2003

Posts: 4,391

North Attleboro, MA USA

I

iwire

Moderator

Welcome to the forum victor.

You will not find anything in the NEC requiring liquidtight conduit to be used to connect a dry type transformer because of vibration.

It is just a design choice buy the installer.

Bob Badger
Construction & Maintenance Electrician
Massachusetts

Re: liquidtight

#99514 05/27/06 03:03 PM

Joined: Jan 2005

Posts: 5,476

Likes: 3

Blue Collar Country

renosteinke Offline

Cat Servant

Member

I'll go a bit farther...

True, the NEC does not address the matter. However, NECA standards document the use of flex at transformers as "trade practice", or good workmanship.

That aside, I noticed recently that some transformers have internal rubber mounts, so the piping actually does not connect to the part that vibrates.

I still like to see flex at the case, though. Old habits die hard.