Doc
Look at the substantiation for proposal 15-20 in the 2001 ROP. This proposal added the words "performance area" to the title of 520.
The substantiation for this change was, "Article 525 has been missapplied by AHJs to touring concerts and theater productions in outside performance areas". The panel comments supported this in the ROC. I'm not sure of Frank's exact application, but if it is for a band or similar type of performance, the installation is to be made per 520 and not 525.
Don

Don(resqcapt19)