Central vacuum outlet assemblies can be added to the entire home, but are especially useful in carpeted areas or in the kitchen with tile and hardwood floors. Flexible hoses can be installed in walls with access in either an unfinished basement or an attic. Either a 15A or 20A circuit for the central vacuum is permissible, based on the size of the motor in the unit and the listing requirements. However, connection to the kitchen small appliance branch circuits is not permitted because they are dedicated to kitchen loads. Usually, the central vacuum unit is in the garage or a utility room, and a Class 2 control circuit originating at the main unit connects to each vacuum outlet. The circuit is switched at each vacuum outlet by insertion or removal of the matching vacuum hose in the outlet.
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