Aviation Lights

http://www.access.gpo.gov/nara/cfr/waisidx_01/47cf r17_01.html

Any obstruction over 200' AGL must be lit by either a strobe by day or night (strobe intensity lessened, mainly by complaints of neighbors and/or sheilded from under light) if not painted aviation orange and white according to the bands indicated by FAA Part 47 advisory circulars 47 CFR §§ 17.21-17.58 http://www.fcc.gov/mb/policy/dtv/lighting.html (for latest info) They can be dual lighted as well, strobe by day, red beacon by night without being painted. The beacon specs are very strict. The fixtures with the special fresnel (sp?)lenses are almost 2 feet tall! They contain 2 big light bulbs. The frequency at which they flash is also specified. The tallest structure within a group of structures in very close proximity to shorter structures must be lit. Antennas and tower structures are governed by the FCC and FAA rules. Buildings, water towers, etc are just governed by the FAA only. The 200' requirement is for areas not close to an airport or heliport. The factor is lowered when the hazard to navigation is close to an approach to an airport, or any other occasion when the FAA deems the obstruction as a hazard to navigation as set forth in Part 47 U.S.C. § 303(q)

In general The CAA in every country [if you are living in other than USA] can be contacted for rules, however USA rules may be a guide for all.

I think it is not for the whole country but locations specified by CAA.
In those localities [Landing/take-off routes] EHT Power cables are also have some Aviation_orange color balls fitted in the top Earth cable for the purpose.

If you would like specifics, contact me by email and I can direct you to the obstruction lighting department. I don't work in that department, but can grease the skids. They should be able to guide you with specifics.

I assume that you are looking to purchase a solution? Please include details of where you are planning the install and what type of obstruction. Thanks! marvin.debeque@honeywell.com