[TheForge] Weathervanes and Lightening

Sat Jan 31 08:16:00 2004

In my day job we are building a combined cycle cogeneration power plant 
on UC's campus, GO BEARCATS!!!

The cooling towers are on the roof, and part of the project 
installation includes a Maxwell Lighting Protection System.

It consists of a fairly large number of "antenna" all connected to 
ground via large diameter cable. Somewhere around 1/2".

The first contractor "screwed" up and connected it to the building 
steel which turns out NOT to be code.

Ray
Cincinnati

On Friday, January 30, 2004, at 10:14 PM, GHS wrote:

> The only place I seem to see them on new installs is in locations 
> where the likelihood of a strike is great in any case, church steeples 
> and the like. The one installer that I talked to made a big deal of 
> the cable being heavy enough to transmit the charge without causing a 
> fire from overheating. Might have been a sales hype for all I know , 
> but it sounds reasonable.
>
> Mike Graf
>
> pitbull wrote:
>
>> That was the thought back when lightning rods were sold, however they
>> determined that it actually made the likelihood of a strike greater 
>> and
>> caused numerous fires. That's why lightning rods where basically 
>> removed
>> from the market.
>> Rick
>> ----- Original Message -----
>> From: "Ralph E Douglass" <[email protected]>
>> To: <[email protected]>
>> Sent: Friday, January 30, 2004 4:29 PM
>> Subject: Re: [TheForge] Weathervanes and Lightening
>>> Andy Vida wrote:
>>>
>>>> Brian Hall wrote:
>>>>
>>>>> I am doing my first weathervane commission and was
>>>>> wondering if anyone had any strong thoughts on if I
>>>>> should attach a grounding cable to it to lessen the
>>>>> chance of lightening striking the building. If so is
>>>>> it just a cable that runs down the building and
>>>>> connects to a metal rod in the earth?
>>>>
>>>>        A grounded connection should be more likely for a strike, no?
>>>
>>> Yes.
>>> But ( and I am certain you know this Andy)
>>> You want a nice and solid ground so that the strike will go to ground
>>> thru the intended path and not thru say..... you phone line or house
>>> wiring... That is bad joo joo.
>>>
>>> Ralph
>>>
>>>
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