To tell the truth I have never seen this in writing but when we have a new house or anytime were the electric co. is there to inspect or turn on power they check it out. I have been scolded one time as the disconnect was farther away than 6' from the unit and they made me move it closer. My tech was lazy and it was easier for him to install the disconnect there rather than where it should be. I will try and get this from them but as it will not be that fast coming.

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Well thats my 2 cents.
Brian Kelly
Kelly Home Inspections