HID fixture heights

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gibson007

New member
When installing a 750W HID, lens covered, Highbay fixture for a manufacturing
facility, what should the correct distance from the lens to the floor be for this insallation? Is this requirement in the NEC? If so, where can I find it?
 

jtester

Senior Member
Location
Las Cruces N.M.
There is an NEC requirement for fixture height based on voltage, not wattage, see 210.6(D). Most often the fixture mounting height is based on the fixture design and area to be lit, and that information can be provided by the manufacturer or other lighting designer.

Jim T
 

John Valdes

Senior Member
Location
SC.
Occupation
Retired Electrician
How high is the bay? I usually mount them to the metal trusses with unistrut to get them in perfect alignment. The height of the fixture will be an issue if it does illuminate the area sufficiantly. Contact the manufacturer and get their perspective on the height issue, and distance apart. Sometimes the lights will come with some good info in the box.
210.6(D) is for 277 - 600 VAC, just so you know.
 

W6SJK

Senior Member
Check the lamp socket position also. Sometimes they are adjustable for different light pattern, i.e. spacing to mounting height ratio. 750 watt?
 
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