These requirements cover self-contained@ payment-accepting@ vending machines that vend non-refrigerated products to be employed in accordance with the National Electrical Code@ ANSI/NFPA 70. Vending machines as covered by this standard are intended for indoor use only@ except that they will be investigated for outdoor use or use in a protected location if so designated by the manufacturer. Vending machines may be battery operated. Vending machines may be battery operated and may be provided with a solar photovoltaic (PV) system. Refrigerated sections of vending machines that vend a non-refrigerated product are judged under the requirements for refrigerated vending machines. These requirements do not cover sound-recording and reproducing machines.