ARSD 20:18:17:06. Slot machine specifications -- Safety requirements

Electrical and mechanical parts and design principles must not subject a player to physical hazards. Spilling a conductive liquid on the slot machine must not create a safety hazard or alter the slot machine's performance. The power supply used in a slot machine must be designed to make minimum leakage of current in the event of an intentional or inadvertent disconnection of the AC power ground. The power supply must be appropriately fused or protected by circuit breakers.