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Re: [TowerTalk] Obstruction Lighting

To: <paul@w8aef.com>, "Doug Rehman" <rehman@surveil.com>,<towertalk@contesting.com>, "Jim Lux" <jimlux@earthlink.net>
Subject: Re: [TowerTalk] Obstruction Lighting
From: "Bill Axelrod" <bill@axelrods.org>
Date: Tue, 5 Jul 2005 14:23:18 -0400
List-post: <mailto:towertalk@contesting.com>
Just a caution if your approach is "In many jurisdictions, a homeowner can 
do work on their own home without requiring a license, although it will need 
to be inspected."

I did that once.  And guess what - the cost to get the work inspected was 
exactly the same as the cost to have the electrician do the job.  So, I 
suggest you check this in advance in your area.

73...   Bill K3WA
----- Original Message ----- 
From: "Jim Lux" <jimlux@earthlink.net>
To: <paul@w8aef.com>; "Doug Rehman" <rehman@surveil.com>; 
<towertalk@contesting.com>
Sent: Tuesday, July 05, 2005 1:59 PM
Subject: Re: [TowerTalk] Obstruction Lighting


> At 10:22 AM 7/5/2005, paul@w8aef.com wrote:
>>I am under the impression that if you run 110 vac to and up the tower the
>>work has to be done by a licensed electrician.
>
> Depends on your jurisdiction.  In many jurisdictions, a homeowner can do
> work on their own home without requiring a license, although it will need
> to be inspected.  You may or may not need a permit.
>
> Also, sometimes, the regulation is written along the lines of "wiring must
> be done in accordance with applicable standards and by qualified
> persons".  Qualified leaves a lot of wiggle room.  If you're a licensed
> ham, that presumes you have at least a nodding acquaintance with Ohm's 
> law,
> etc., and may well be as qualified as anyone else.
>
> For instance, many commercial factories and the like have on-site
> maintenance staff who do the wiring, and they're not necessarily licensed.
>
>
> There's a difference between licensure in the contracting sense, and
> certification or licensure in the personal qualifications sense.  A
> contractor may have a contractor's license, but, in California at least,
> that's primarily to assure that they know the laws, can meet financial
> responsibility rules, have a defined presence for service of legal 
> process,
> etc., and says nothing about competence for the job at hand.
>
> California's laws are changing, by the way, so come 1 Jan 2006, things 
> WILL
> change a bit due to AB1087, signed back in 2002.
>
>
>>Of course if you installation does not have to be inspected.......
>>
>>de Paul, W8AEF
>>
>>----- Original Message -----
>>From: "Doug Rehman" <rehman@surveil.com>
>>To: <towertalk@contesting.com>
>>Sent: Tuesday, July 05, 2005 4:06 PM
>>Subject: [TowerTalk] Obstruction Lighting
>>
>>
>> > Due to my proximity to a small airport, the FAA is requiring 
>> > obstruction
>> > lighting (L-810 light or lights) on my tower; painting is not required
>> > though. The tower will be a Tri-Ex LM-354HDSP 54' crank-up with 15' of
>> > mast
>> > out the top.
>> >
>> > My first decision is where to mount the light(s). I was planning on a
>> > VHF/UHF vertical on the top of the mast. If I do this, then I'm going 
>> > to
>> > need two lights since the light couldn't sit on the top of the mast. To
>> > cut
>> > the lighting cost in half, I will probably make a sidearm for the 
>> > VHF/UHF
>> > vertical to mount on pointed downward, thus allowing the light to sit 
>> > on
>> > the
>> > top of the mast.
>> >
>> > The next decision isn't quite as easy to make. I can use a standard 110
>> > VAC
>> > light that costs about $120 or a 12 VDC light that costs $223 (Dialight
>> > model 860-1R03-001 from www.unimar.com). Either option only requires a
>> > couple of amps.
>> >
>> > I will have mast mounted preamps for 6m, 2m, and 70cm mounted at the 
>> > top
>> > of
>> > the tower, so I need 12 VDC there anyway. I could run 110 VAC to a NEMA
>> > box
>> > with a 12 VDC power supply in it to feed the preamps and use the 110 
>> > VAC
>> > to
>> > feed a standard L-810 light. A heavy outdoor extension cord, or 
>> > stranded
>> > THHN, encased in flexible conduit would be used to run the 110 VAC to 
>> > the
>> > top. The tower will already have 110 VAC at the base to run the winch.
>> > Alternatively, I could use the more expensive 12 VDC L-810 light and 
>> > just
>> > run 12 VDC to the tower top for everything; running the preamps and 
>> > light
>> > from a trickle charged battery would provide for emergency power.
>> >
>> > I'm leaning strongly towards the last choice (all 12 VDC on the tower),
>> > but
>> > looking for input from the collective wisdom and experience of the 
>> > group
>> > before committing.
>> >
>> > Thanks,
>> > Doug
>> > K4DDR
>> >
>> > _______________________________________________
>> >
>> > See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
>> > Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with
>> > any questions and ask for Sherman, W2FLA.
>> >
>> > _______________________________________________
>> > TowerTalk mailing list
>> > TowerTalk@contesting.com
>> > http://lists.contesting.com/mailman/listinfo/towertalk
>> >
>> >
>>
>>_______________________________________________
>>
>>See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
>>Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with
>>any questions and ask for Sherman, W2FLA.
>>
>>_______________________________________________
>>TowerTalk mailing list
>>TowerTalk@contesting.com
>>http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
> See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless 
> Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with 
> any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> 

_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

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