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Old 02-23-2018, 01:46 PM   #21
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$35K is way too low you Craigslist hack, you won't even cover your overhead with that.

$65K minimum.
That really sounds low when you think it's only a little more than $3000 per floor when you add in the roof work.
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Old 02-23-2018, 01:58 PM   #22
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Fish the bamboo.

~ $230,000 for the entire building -- plus the fixtures.
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Old 02-23-2018, 02:06 PM   #23
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A lightning storm is one of my most memorable experiences in my life. I feel bad for you now. Honestly nothing more powerful.

Lightning can be pretty intense:

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Old 02-24-2018, 05:00 AM   #24
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A lightning storm is one of my most memorable experiences in my life. I feel bad for you now. Honestly nothing more powerful.
I grew up in Southwest Florida. I bet I've seen more lightning in a single summer afternoon, than you have in your lifetime. I bet MikeFL can concur with me.
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Old 02-24-2018, 05:27 AM   #25
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I grew up in Southwest Florida. I bet I've seen more lightning in a single summer afternoon, than you have in your lifetime. I bet MikeFL can concur with me.
I have few family members live in Central Florida area ( north of Orlando ) and have see lightning strike pretty often in that area.
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Old 02-24-2018, 05:51 AM   #26
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I have never installed a lightning protection system. I have seen them specified in RFPs. I think the only one I've seen around here is the Erico (now Pentair) brand.

I read through their literature in order to make sure I didn't mess anything up when working around it installing rooftop equipment. Not saying I'd do it without consulting with an engineer experienced with it, but it really doesn't seem like there's all that much to the design. Look in this guide from Caddy for the rolling sphere method for laying out the air terminals, the little lightning rods:

https://www.erico.com/catalog/literature/E907W-WWEN.pdf

The nice thing about designing lightning systems is nobody guarantees them to work, and nobody really expects them to work.
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Old 02-24-2018, 10:14 AM   #27
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I have few family members live in Central Florida area ( north of Orlando ) and have see lightning strike pretty often in that area.
Are you trying to one up me. I won't put up with that.
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Old 02-24-2018, 10:48 AM   #28
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Are you trying to one up me. I won't put up with that.
Sbrn ., No., not really we know pretty much what Florida is famous for.,
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Old 02-24-2018, 12:07 PM   #29
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Hi fellow electricians,

I have a challenging project upcoming. The scope involves installing a complete new lightning conductor (surface run) of an 18th storey building. Any advice on the best cost-effective way to run the conductors ?
Seriously?
What is the building material?
Is it a skim surface with a 2 inch layer of foam under it?
Does the building have a suspended aerial platform to clean windows?
If it does then what training is needed to run platform or is this like installing generator and and another trade is needed ie do you need to have someone run the the machine for you?
You need to shut off surrounding area around work?

Your project is easy if you have access to an aerial platform if not then you are ****ed because no electrician is going to be in a bosum chair clipping supports to hold wire in place

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Old 02-24-2018, 06:03 PM   #30
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Originally Posted by macmikeman View Post
I grew up in Southwest Florida. I bet I've seen more lightning in a single summer afternoon, than you have in your lifetime. I bet MikeFL can concur with me.
I concur. I'd love to harness the energy one day. It would need a pretty big capacitor or maybe use it to move mass away from the center of the earth to create potential energy.

Lightning protection systems are very common around here. Everyone with anything to protect has one. And we get at least a few fatalities per year as well. Often roofers or people playing sports, sometimes kids. And this has resulted in an industry for lighting detection and lighting prediction systems for schools, parks, etc. We've had them at the major league baseball parks forever but recently public schools and public parks have been installing them to mitigate liability from the ambulance chasing lawyers.
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