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Cantilever/ sliding gate grounding help

Cantilever/ sliding gate grounding help

(OP)
I am trying to find a solution to grounding a sliding substation gate, but have not found a solution. I noticed another thread but that solution wont work for me. Does anyone have any ideas.

we have thought of a retractable cable, and put a wire on a track that curtains when opened, but have no idea how to implement this.

Any help would be appreciated.

RE: Cantilever/ sliding gate grounding help

We tie wrap the welding cable (for flexibility) to rings that slide on a stainless steel cable, getting the curtain rod effect.

RE: Cantilever/ sliding gate grounding help

(OP)
Do you happen to have a photo or detail showing how this might be done that we could use to explain to our contractor?

RE: Cantilever/ sliding gate grounding help

I would think you could bond your grounding strap to one of the the roller bolts. Then check continuity between the gate and grid at several pionts of closure.  

RE: Cantilever/ sliding gate grounding help

In our new regulated world, the roller and track may have to be approved as a current carrying device if used for grounding.
After a few years I would be very nervous trusting a ground connection between a roller and a track. Think about some old rolling gates that you have seen. A patina of corrosion is not generally a good or a dependable electrical connection.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Cantilever/ sliding gate grounding help

USE a length of double unistrut (P1001 or equal) between the gate and the fence.  Use Unistrut P2750 trolly fitting in the lower track to support a festooned cable( I used welding cable because of the flexability)
Trolly fittings:  http://www.unistrut.com.au/index.php?part=P2750&M1=6&M2=20&go=1
All the hardware to fasten the stut to the fence is in the nistrut catalog.  B-Line, Powerstut etc all make similar fittings.  

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