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Power-User

Join Date: May 2007
Posts: 101

Ground Fault Protectors against lightning strike

06/26/2007 11:22 AM

For protection against lightning strike the National Weather Center recommends installing Ground Fault Protectors (GFP) for key equipment. How are Ground Fault Protectors installed and what do they mean by "key equipment"? Does each key equipment needs its own GFP and is it a 100 % protection?

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Power-User

Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 381
Good Answers: 1
#1

Re: Ground Fault Protectors against lightning strike

06/26/2007 6:52 PM

Look in the 'Amateur Radio Operators Handbook" It will explain how to isolate your systems

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Anonymous Poster
#2

Re: Ground Fault Protectors against lightning strike

06/27/2007 12:35 AM

I'm not sure where you are getting your information; normally you install lightning arrestors for protection on antenna, transient voltage surge suppressors (TVSS) for lighting protection on building services, ground-fault circuit interrupts for live protection (GFCI), and ground-fault protection of equipment (GFPE) for protection of equipment distribution systems.

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Power-User

Join Date: May 2007
Posts: 101
#3
In reply to #2

Re: Ground Fault Protectors against lightning strike

06/27/2007 8:18 AM
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Anonymous Poster
#4
In reply to #3

Re: Ground Fault Protectors against lightning strike

06/27/2007 11:52 AM

The key phrase there is "near water". The last "guest post" is correct. If you truly want to protect your equipment, look at a lightning arrestor, isolation transformer, etc. Isobar makes a decent product at a reasonable price. Coming from experience, it will still not handle a direct strike, but it will protect you from the more frequent close calls.

http://www.tripplite.com/products/suppressors/isobar.cfm

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Anonymous Poster
#5
In reply to #3

Re: Ground Fault Protectors against lightning strike

06/27/2007 12:03 PM

Oh, and to answer your original question, GCFI (ground circuit fault interrupt) outlets and breakers are installed just like any other, except that a good ground is required for them to work correctly.

For indoor use, I prefer the outlets over the breakers. You don't need both. The outlets are cheaper and have quicker response times considering that they are usually installed to protect against appliances short circuiting in water (toaster in the kitchen sink, hair dryer or curling iron in the bath tub, etc.

For outdoor use such as an outdoor outlet or connection to a hot tub or pool, I believe a breaker may be required.

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Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
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#6

Re: Ground Fault Protectors against lightning strike

12/20/2022 7:38 AM

The <...they...> is probably not a CR4 subscriber. So the best thing to do is get back to the <...National Weather Center...> directly and ask it to explain its recommendations.

The telephone is the best tool for this quest.

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