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ehidek
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Join Date: Jun 2008
Posts: 7

Lightning Arrestor Installation

07/25/2011 6:42 AM

Friends, Is it proper to link or loop the Ground pit for Lightning Arrestor to the electrical ground pit of a building through a conductor?
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Pathfinder Tags: lightning arrestor installation
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: lightning arrestor installation

07/25/2011 8:24 AM

What does the local code say?

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cuba_pete
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#2

Re: Lightning Arrestor Installation

07/25/2011 2:03 PM

If it isn't connected to the same earthing source, then it doesn't really work as a lighting protection system, does it?

The building would be set at a different potential when a stroke of lightning hits, providing no protection to anything except the protection system!

As stated, the local code will tell you this.
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Mushtaq Hussainh
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Join Date: Jun 2011
Location: Hyderabad, India.
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#3

Re: Lightning Arrestor Installation

07/25/2011 4:25 PM

NEC Article 250-86. This provision shall not prohibit the required bonding together of grounding electrodes(loop for building grounding & eletrode for lightning protection) of different systems which will limit potential differences between them and between their associated wiring systems.

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electricalexpert65
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#4

Re: Lightning Arrestor Installation

07/26/2011 10:26 AM

By all means! IS 2309 mandates that the Lightning Protection System must be connected (bonded) to the plant services earthing. Even IEEE 1100, IEC 60364 & the IEEE Green Book prescribe the same.
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Previous in Forum: UTS Coordination of Tower, Conductor and Insulator   Next in Forum: Generator Terminal Output Voltage Regulation & Automatic P.F Control Problem

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