transformers and flex conduit

[pacautomation]

we recently had an company inspector tell us that a dry type transformer was required to be connected to the conduit system with flex, we cannot find this in the code book? these were on an industrial control rack we piped in with ridgid. Thanks

 

[qcroanoke]

we recently had an company inspector tell us that a dry type transformer was required to be connected to the conduit system with flex, we cannot find this in the code book? these were on an industrial control rack we piped in with ridgid. Thanks

It's not in the NEC but it may be in their specifications and or code.
Ask him to show it to you.

 

[raider1]

Using flex to make the final connection to a transformer is a good wiring practice but not a code requirement. You may find it in some specifications.

Chris

 

[infinity]

What if the transformer is suspended? Flex required or not? If sitting on the floor or on a pad not required as others have stated.

 

[jusme123]

...never liked the idea of 'stacking' transformers. They were designed to dissipate heat, with ambient temp in mind, but the added heat from another transformer stacked below it is what I never liked, it just adds to the higher transformers operating temp..

 

[DARUSA]

VIOLATION ?

 

[brian john]

[/ATTACH]

VIOLATION ?

Depends on what the label on the inside of the transformer says. Many have labels that say no conductors above this point.

 

[DARUSA]

Depends on what the label on the inside of the transformer says. Many have labels that say no conductors above this point.

All connections are on top for secondary side and bottom for primary side!!!

 

[iwire]

...never liked the idea of 'stacking' transformers. They were designed to dissipate heat, with ambient temp in mind, but the added heat from another transformer stacked below it is what I never liked, it just adds to the higher transformers operating temp..

When you are the one paying for the floor space you will be free to spread them out.

 

[infinity]

Depends on what the label on the inside of the transformer says. Many have labels that say no conductors above this point.

Some do and some don't. This one is setup for primary and secondary on top.