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Old 04-05-2008, 04:07 PM   #1
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how do i earth mechnical protection


I am confused been looking every where but can not find information
I am adding a spur to a ring main, i have the wall chased out in a "safe zone".
I believe that regulations state that the cable must be at least 50mm below the surface or must have mechanical protection. As 50mm is in practical in this case, I am thinking about installing some thing like a top hat strip, I also believe that this has to be earthed, can any one tell me if this is so, and if this is the case how do i go about earthing it. Also am i right in using the top hat shielding in the first place.

Thanks for any help

john

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Old 04-05-2008, 06:56 PM   #2
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how do i earth mechnical protection


Sounds like you are in UK. This s mainly a north American site. Our code requires 1.25 inches. Fished cable don't need this. It only applies to cable running through studs. Don't want someone to put a nail through the cable. If the 1.25 inches can't be maintained then we install the metal plate over the area so a nail won't go in.

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Old 04-05-2008, 07:22 PM   #3
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thanks joed
you are right i am from the uk - i failed to notice it was a us site so i need to keep looking but thanks for your reply
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Old 04-07-2008, 05:03 PM   #4
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how do i earth mechnical protection


Earthed. Wow, a noun used as a verb. And I thought we Americans were the only ones that could screw up a perfectly good noun.
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