Aircraft Warning Sphere use for 500KV transmission tower project .
Aircraft Warning Sphere use for 500KV transmission tower project .
Obstruction Marking and Lighting Insatallation standard :
- Evenly spaced along the wire at approximately 200ft(61m) interval ． Lighted and unlighted markers should be a solid color ． such as aviation orange , white or yellow . lighted and unlighted markers should altermate aviation orange, white, yellow with aviation orange marker positioned at each end．
- If less than four markers ( lighted or unlighted ) are on the line , all markers should be aviation orange．
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