How far must an emergency shut-off switch be from dispensing devices?

The correct distance for an emergency shut-off switch from dispensing devices is established to ensure quick and safe access in case of an emergency. It is stipulated that the emergency shut-off switch should be located at least 20 to 100 feet away from the dispensing devices. This distance is crucial because it provides enough space for personnel to safely access the switch without being too close to potential hazards associated with gas dispensing operations.

When an emergency occurs, having the shut-off switch positioned further away helps minimize risks associated with escaping gas or potential ignition sources. The range of 20 to 100 feet balances the need for accessibility to the shut-off switch while maintaining a safe distance from the hazards posed by the LP-gas system.

The other options fall short of meeting safety standards, as they suggest distances that may not provide adequate protection in an emergency scenario.