Two transformers facing each other clearance

[Cartoon1]

I'm trying to add a 45kva 480-120/208 transformer in a small electrical room. The existing transformer is rated 75 kva 480-120/208. This new transformer i'm adding will be facing the 75 kva transformer on the other side of the wall. Would the transformers facing each other be considered as condition 3 151-600 voltage in table 110.26(A)(1) ? I have 3' feet clearance between the transformers but i dont have 4' feet. Also the side against the wall (masonry wall) what should the clearance be wall to dry type transformer , is 6" enough?

Thank you

 

[kwired]

Many will say transformers normally won't require to comply with 110.26 at all.

 

[Cartoon1]

Many will say transformers normally won't require to comply with 110.26 at all.

Hmmm, so it will come down to the inspector opinion and i dont want to give him that option. Will stacking the transformer above the 75 KVA be a better option? how much space should i leave between them?

 

[infinity]

I would just stack them. A recent thread:

Transformer stack top each other

I have 75kva transformer bottom and on top i have 45kva transformer. I dont see anything that prohibits NEC 2017 transformer stacking but could be wrong. Is their anything I need to look out for or is in NEC 2017 regarding transformer stack on top of each other?

forums.mikeholt.com

 

[kwired]

Hmmm, so it will come down to the inspector opinion and i dont want to give him that option. Will stacking the transformer above the 75 KVA be a better option? how much space should i leave between them?

If it will come down to inspector opinion then maybe ask before you do anything. He may balk at stacking also but IMO either option is fine.