Lightning Protection-Ball Field
Lightning Protection-Ball Field
(OP)
I'm working on the design of a service for lights at a ball field. The poles are concrete and will be 70ft above ground level. The pole has a bare Cu. wire encased in the concrete and bonded to the lights supports. My questions are:
1. Should I terminate the bare Cu. wire at the bottom of the pole to a 10' ground rod and that's all the lightning portection or,
2. Should I run a ground loop back to the service.
3. Should I bond the fence/metal structures when close to the pole, to avoid any flashover?
Any comments will be appreciated.
Thanks
1. Should I terminate the bare Cu. wire at the bottom of the pole to a 10' ground rod and that's all the lightning portection or,
2. Should I run a ground loop back to the service.
3. Should I bond the fence/metal structures when close to the pole, to avoid any flashover?
Any comments will be appreciated.
Thanks






RE: Lightning Protection-Ball Field
NFPA 780 has methods to determine if bonding is required to avoid flashover. It depends on the height of the metal structure and the distance from the down conductor.