Mounting Height for Light Fixtures

Use this guide to find the recommended mounting height of a light fixture based on the watts needed for the type of HID (High Intensity Discharge) and Tungsten Halogen light bulb or lamp.


Mounting height for HID light bulb fixtures
Bulb Type Mounting Height
70 Watts
High Pressure Sodium (HPS) 10‑15'
Metal Halide (MH) -
Mercury Vapor -
Tungsten/Halogen -
100 Watts
High Pressure Sodium (HPS) 15‑20'
Metal Halide (MH) -
Mercury Vapor -
Tungsten/Halogen -
150 Watts
High Pressure Sodium (HPS) 20‑55'
Metal Halide (MH) -
Mercury Vapor -
Tungsten/Halogen -
175 Watts
High Pressure Sodium (HPS) -
Metal Halide (MH) -
Mercury Vapor 18‑23'
Tungsten/Halogen -
200 Watts
High Pressure Sodium (HPS) 20‑25'
Metal Halide (MH) -
Mercury Vapor 18‑23'
Tungsten/Halogen -
250 Watts
High Pressure Sodium (HPS) 22‑27'
Metal Halide (MH) 20‑25'
Mercury Vapor 20‑25'
Tungsten/Halogen -
400 Watts
High Pressure Sodium (HPS) 30‑35'
Metal Halide (MH) 25‑30'
Mercury Vapor 20‑25'
Tungsten/Halogen -
500 Watts
High Pressure Sodium (HPS) -
Metal Halide (MH) -
Mercury Vapor -
Tungsten/Halogen 15‑20'
1000 Watts
High Pressure Sodium (HPS) 40‑50'
Metal Halide (MH) 40‑45'
Mercury Vapor 35‑40'
Tungsten/Halogen 25‑30'
1500 Watts
High Pressure Sodium (HPS) -
Metal Halide (MH) -
Mercury Vapor -
Tungsten/Halogen 25‑30'

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Warning: When using this information to perform electrical work, call a licensed electrician and consult the NEC® for safety. All licensed electricians have passed examinations covering the National Electric Code®, know state and local building codes, and may carry insurance to cover damages.