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Re: Restaurant audio SystemIf this is installed in the US, there are almost certainly codes that dictate the type of wire that is required. In general, though, plenum ratings are only required in spaces used for environmental air, riser ratings are required for any cable that extends vertically through multiple floors, and -X cabling can only be used in residential applications. Note that a plenum rating also impies a riser rating.
Re: Restaurant audio System
If this is installed in the US, there are almost certainly codes that dictate the type of wire that is required.
In general, though, plenum ratings are only required in spaces used for environmental air, riser ratings are required for any cable that extends vertically through multiple floors, and -X cabling can only be used in residential applications. Note that a plenum rating also impies a riser rating.
