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Member

Join Date: Nov 2008
Posts: 6

Tunnel Lighting Protection

06/19/2010 2:18 AM

Dear friends,

i wanted to discuss about the protection of tunnel light cable for earth fault. as earth fault is very normal fault which can occur any time due to loose connection on because of unbalancing. since tunnel lights fall in a emergency service which we never want to shut down when there is fire in tunnel.

please guide me if there is any NFPA requirement says that in tunnel lighting Earth leakage protection is not required.

ATUL PATHAK

Deign Engineer

Metro Rail...

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Power-User

Join Date: Feb 2010
Posts: 188
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#1

Re: Tunnel Lighting Protection

06/19/2010 4:13 AM

I dont know which NFPA for tunnel lighting protection is but you can find some information in BS 6164 tunnel light protection.

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

Join Date: Jan 2007
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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#2

Re: Tunnel Lighting Protection

06/22/2010 2:32 PM

<...earth fault is very normal fault...>

How can a fault be normal?

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Member

Join Date: Nov 2008
Posts: 6
#3
In reply to #2

Re: Tunnel Lighting Protection

06/23/2010 12:11 AM

i mean to say that earth fault is a very common fault.

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