Ground rods

[kjw444]

Is there a maximum distance the ground rods can be from the main disconnect? I don't think so but I can't find anything. Thanks for any help.

 

[iwire]

No more than about 12,430 miles.

 

[hurk27]

No more than about 12,430 miles.

wont that put you back at the same spot on the globe

 

[George Stolz]

No, the exact opposite point on the globe, that would be the farthest it could get without driving it on the moon - which is no doubt going to be required in the 2011 NEC.

(With all due respect to Bob, I had to Google it, but I suspected what he was after. )

 

[TOOL_5150]

wont that put you back at the same spot on the globe

The circumference of the earth at the equator is 24,901.55 miles

~Matt

 

[hurk27]

whoops only half way there:roll:

 

[kjw444]

OK thanks! It would set me back about $23,370,000! lol

 

[zog]

No, the exact opposite point on the globe, that would be the farthest it could get without driving it on the moon

To test it you need to be about 6.2 times the distance for your potential rod and about 10 times for your current rod. So you would need a test rod on Mars and one on Jupiter, not to mention some pretty long test leads.

 

[hurk27]

No, the exact opposite point on the globe, that would be the farthest it could get without driving it on the moon - which is no doubt going to be required in the 2011 NEC.

(With all due respect to Bob, I had to Google it, but I suspected what he was after. )

LOL I used the measuring tool in Google Earth to measure it, when I realized it, My bad

Been too long out of school for me

Playing with Google Earth is addicting, I love mapping

 

[LarryFine]

OK thanks! It would set me back about $23,370,000! lol

If you use metallic conduit, don't forget to bond it at both ends.