Transformer separation

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UofL07

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I searched this forum and was unable to find an answer to the following...

In 450.27 the NEC ask for space separations between oil filled transformers and buildings. How do you determine the proper distance? I checked the 2005 handbook, ANSI C2-2007 (which is referenced in the article) and found nothing. Our fire code expert was recenlty laid off due to the economy, but in his last report on a similar situation he used the IBC (table 602). I don't have a copy of the IBC but am obtaining one, is this the proper place to look for this information?
 
Thanks, I just needed some confirmation that this is where I needed to go. My company in it's infinite wisdom has person A (the expert) write the report and then cuts them leaving person B (me) to explain and justify it to the client. While I'm very glad to still have a job, this isn't even my department.
 
I will speak on behalf of Ron and myself, "if I may be so bold" You are welcome. Don't know if you have your answer but heading in the right direction. IBC, IFC, etc. can be confusing and interpretations can and will be a nightmare. Ask a Fire Marshall one time...:smile:
 
My best read-basically-indoor requires vault-requires 3 hour separation- outdoor- requires separation from combustibles- would this not also be 3 hours?-find the IBC yet?
 
FYI- As best I can tell we are working on a "Factory Instustrial F-1 Moderate Hazardous Occupancy" Which will require a 2-hour fire separation between the new and existing facility. I have the orginal report which helped, although I wanted to understand it before I had to back it up in front of the clients (who mainly use the CEC which apparently has these tables in it). Thanks again- I may not fully understand it but I have a grasp on where the conclusions in the report came from and can guide the conversation now.
 
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