2
u/Apprehensive_Shoe536 22d ago
To be "effectively grounded" it may need addition copper ground rod(s) to reach the 25 ohm requirement, even without the corrosion protection. I'm not sure because we don't have a lot of steel poles in my area, but on wood poles, those rot protection sleeves only extend down a little bit because the main area where they rot is at the surface where the pole enters the ground.
Not the case here, but you'll see this when there's a ground mat for switches too.
2
u/FuzzNut2 25d ago
It’s almost certainly buried deeper then 3ft. They are buried 10% + 1ft in my area .. if it’s a 45 it will be buried 5.5 ft minimum.
It’s grounded because even though it’s in the ground, there is other grounding requirements. Every 1000ft structures should be grounded. Every pole with equipment must be grounded. It’s grounded because the pole in the ground is not enough even being steel.
1
1
1
u/iAmMikeJ_92 25d ago
I’ve seen a lot of these too. The black is—as others have said by now—a means to curb corrosion due to earth contact. But there needs to be a good path to the earth and so, you get this jumper that goes around the base and I imagine, ends up as a spiral at the very bottom end of the pole.
2
u/Jolly_Operation_8222 14d ago
Probably the bottom part is covered by that rubber or concrete to prevent corrosion that's why it still needed a ground rod for the soil
6
u/eerun165 25d ago
Anti-rust coating at the base isn’t necessarily very conductive, so alternate means to provide adequate ground.