Meter Can Grounding

[George Stolz]

How do I determine what size conductor I must bond a meter can with?

The oddity? This metercan does not contain service conductors. It's a CT metercan with a phone line in it (in addition to whatever conductors come from the CT.

I glanced around (way too quickly) and figured this was a good forum question.

 

[mdshunk]

Um... 800.40(A)(3) is the closest thing I can come up with, but doesn't really deal with cans.

 

[iwire]

For us the 1.25" metal conduit required by the power co serves as ground.

If I had to run a copper EGC it would be 10 AWG as that is at least as large as the conductors that supply the meter.

However here in this area it would be 'taboo' for me to install any conductors into a power company CT meter socket.

We get the CT socket from the POCO, hang it where told and run 1.25" metal conduit from it to the CT location, at that point we are done and the POCO takes over.

 

[mdshunk]

I misread this post at first. I thought you were using a CT can to just contain phone eqipment. I guess you're running a phone line into a CT can (that actually contains CT's) for some sort of AMR system, perhaps. I'm not really seeing that any additional grounding is required.

 

[George Stolz]

The phone line runs into the meter can, for dial in meter reading.

Thanks for the replies!

 

[tom baker]

My POCO meter foreman asked the same question. Its a good question with no clear answer. However they use a 10 AWG, as thats the size of the CT leads to the meter base. And if you used a metal nipple with grounding locknuts that would do the bonding as well as a 4 AWG or larger jumper...