Spacing of visible notification appliances in corridors up to 20 ft requires that visible appliances be placed not more than 15 ft from the end of the corridor.

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Multiple Choice

Spacing of visible notification appliances in corridors up to 20 ft requires that visible appliances be placed not more than 15 ft from the end of the corridor.

Explanation:
Visible notification appliances must provide coverage along the egress path so that no one is more than a short distance from a strobe. For corridors up to 20 ft wide, you can space devices up to 20 ft apart, and you must place them so that the end of the corridor is within 15 ft of a device. This ensures that, regardless of where you are in the corridor, a visible alarm is within sight quickly. So the correct spacing is 20 ft between appliances with 15 ft maximum distance from the end of the corridor to the nearest appliance.

Visible notification appliances must provide coverage along the egress path so that no one is more than a short distance from a strobe. For corridors up to 20 ft wide, you can space devices up to 20 ft apart, and you must place them so that the end of the corridor is within 15 ft of a device. This ensures that, regardless of where you are in the corridor, a visible alarm is within sight quickly. So the correct spacing is 20 ft between appliances with 15 ft maximum distance from the end of the corridor to the nearest appliance.

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