I need to install a 30 kva transformer above a bathroom ceiling which will be Sheetrock. It will be accessible by an open space through adjacent room which is getting no ceiling. Above the bathroom ceiling will be plywood laid down. The print calls for the transformer to be mounted in this space. Unfortunately I cannot suspend xfmr due to large ductwork covering basically every option there is to hang it. If framing is strong enough to hold transformer, Can I place this 30 kva transformer on top of bathroom with the plywood on the bottom of it?
Installing 30 kva transformer above ceiling
- Thread starter RECNYC
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- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I believe that would be okay but will you have the clearances required around the unit?
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Be patient-- your posts must be okayed by a moderator until the software recognizes you. You may not see the first few posts at first but they are there. I believe you are clear now
- Location
- Massachusetts
If I recall many dry type transformer require non combustible construction under them.
For instance see section 5.2 of this installation manual. http://apps.geindustrial.com/publib...llation and Instruction|475A667AAP001|generic
- Location
- Massachusetts
I think it is considered fire retardant treated wood. It is still a combustable.
In some cases FRTW can be used in place of non-combustable material.
See section 4 of this document, I can't figure out if you can place a transformer on it.
http://www.frtw.com/sites/default/files/specs/common/isec_nfpa_frtw.pdf
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Since commercial spaces change all of the time would you want to risk someone demoing the ceiling and having a 300+ pound transformer fall on them?
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
I would also be concerned about providing a vibration isolating mount if you attach it to a diaphragm (plywood sheet.)
Thanks for the responses. The location of the proposed transformer location I believe is not doable. I agree about placing a transformer on top of a structure like that. I think its best the engineer comes up with a better location. Again thanks for all the informative responses.
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