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September 12th, 2004, 03:59 AM
#1
Inactive Member
I ran into this once. A series of poles made of 10 in steel pipe. a run of quadruplex was strung between. The way I see it there is no practical way to bond these to code. I would be different if there was a conduit between.
One would be tempted to use the bare wire for a bond because thats better than nothing, but that would be dangerous if a truck or tree hit the o/h line. It could break and become live energizing the poles.
E
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September 14th, 2004, 09:55 AM
#2
HB Forum Owner
If this was a lighting installation it likely would have been single phase.
Perhaps the fourth wire was an equipment bonding conductor?
Or perhaps it was a three phase, three-wire feeder?
I agree that if it was a three phase, four-wire feeder, a fifth wire would be required to bond the poles.
Ed
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October 28th, 2004, 03:57 PM
#3
Inactive Member
It was a three phase 3 wire feeder for motors. Is the bare ACSR wire an acceptable bond? If it was 3 ph 4 w I cannot think of a way it could be done.
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October 28th, 2013, 07:28 AM
#4
Junior Hostboard Member
Re: bonding of steel poles, overhead wiring
Steel poles must have high resistivity, and should have power to control under certain substances such as disaster , or in electricity failure. Always use best quality product at once only....instead of replacing again and again.
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