Security Lighting Calculator

Design perimeter and area security lighting per IES RP-33. Calculate fixture count, spacing, illuminance levels, and camera compatibility. Checks IESNA security lighting categories and uniformity ratios.

Site & Security Level

Perimeter / Area Length 300 ft

Zone Width 20 ft

Security Level

Camera Type

Mounting Height 20 ft

Fixture Lumens 15000

Fixture Wattage 100 W

Fixture Arrangement

Security Assessment

Security level—

Required illuminance—

Camera requirement—

Max pole spacing—

Fixtures / poles needed—

Actual spacing—

Total zone area—

Achieved illuminance—

Camera compatibility—

Total wattage—

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poles

Count

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ft spacing

Pole spacing

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fc avg

Illuminance

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kW total

System load

IES RP-33 Security Levels Reference

Level I — Low Risk

0.5 fc

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Level II — Medium Risk

1.0 fc

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Level III — High Risk

2.0 fc

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Level IV — Critical

5.0 fc

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