Galvinaized 90 with PVC

[don_resqcapt19]

Larry,
We use Liquidtight Flexible Metal Conduit.
Don

 

[steve66]

You can use metallic raceways and eliminte the bonding problem.

Yes, but making a several hundred foot underground raceway all metal just to avoid some bonding issues sounds kind of extreme.

I can't imagine why a long bonding wire is permitted at a pole, but not in the middle of a conduit run.

I guess one other solution is to just keep all the elbows that are in the middle of the run deep enough that they don't need bonding.

Steve

 

[don_resqcapt19]

Steve,

I can't imagine why a long bonding wire is permitted at a pole, but not in the middle of a conduit run.

Because the pole was the only issue on the mind of the person who submitted the proposal.

I guess one other solution is to just keep all the elbows that are in the middle of the run deep enough that they don't need bonding.

I guess you could always make a form and pour 2" of light weight concrete around the 90s. I really don't like this permission in the code as I believe that concrete is conductive enough in many cases to present a shock hazard if the metal 90 is energized.
Don