Hello, I'm from Ontario Canada.
I'm hoping someone can help me here with a lightning rod protection system question.
I'm looking at a Canada-U.S. border toll booth project. There are two booths- one for the Canadian side, and one for the U.S. side.
For each side, the project proposes two lightning rods installed on top of the roof of the booth with grounding conductors routed along the roof and down to the ground to their respective grounding rods in the ground.
This toll booth also has a number of electrical conductors on the roof for lights and for an led sign.
The project was already done on the U.S. side. When I looked at a picture of the work done on the roof, I can see that some of the electrical conductors are rather close to the lightning rod conductors, like less than 3 feet apart.
I was a bit surprised to see this because the Canadian Electrical Code states that a min. of 2 meters spacing between the conductors must be provided, or, if not possible, the ground electrodes for the lightning rod system and the electrical system must be bonded.
Does the NEC specify minimum spacing or bonding between lightning rod conductors and electrical conductors?
If bonding is required, where is this bonding permitted?
Thanks.
I'm hoping someone can help me here with a lightning rod protection system question.
I'm looking at a Canada-U.S. border toll booth project. There are two booths- one for the Canadian side, and one for the U.S. side.
For each side, the project proposes two lightning rods installed on top of the roof of the booth with grounding conductors routed along the roof and down to the ground to their respective grounding rods in the ground.
This toll booth also has a number of electrical conductors on the roof for lights and for an led sign.
The project was already done on the U.S. side. When I looked at a picture of the work done on the roof, I can see that some of the electrical conductors are rather close to the lightning rod conductors, like less than 3 feet apart.
I was a bit surprised to see this because the Canadian Electrical Code states that a min. of 2 meters spacing between the conductors must be provided, or, if not possible, the ground electrodes for the lightning rod system and the electrical system must be bonded.
Does the NEC specify minimum spacing or bonding between lightning rod conductors and electrical conductors?
If bonding is required, where is this bonding permitted?
Thanks.
