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-   -   Meter Base and Disconnect Grounding (http://www.diychatroom.com/f18/meter-base-disconnect-grounding-175365/)

sirsparksalot 03-23-2013 10:31 PM

Meter Base and Disconnect Grounding
 
1 Attachment(s)
This is a 4-wire 200amp for mobile home.

Should the bare ground be ran to the ground rod from the meter, from the disconnect, or from the panel inside the home?

It IS allowed in my area to ground at the meter, but I don't see a terminal in there for the #6 Bare.

I'm using 4/0-4/0-2/0-2 AL.

kbsparky 03-24-2013 03:25 AM

You only need 3 conductors from your meter box to the outside disconnect switch.

Bond the neutral wire there, and connect all your ground wires on the neutral bar. The 4 insulated wires to the mobile home originate from the outside disconnect switch.

IF you are required to run the ground wire from the meter, you found the terminal: The one highlighted with the green line. Otherwise, leave it empty.

I prefer to use a combo box for such installations. No need to wire up separate meter and disconnect boxes, since the one box serves as both:

http://www.homedepot.com/catalog/pro...32c84e_300.jpg

sirsparksalot 03-24-2013 08:02 AM

Kb, thanks.

I'm not required to run the ground to the meter, but I can, and did, so it's good to just leave it that way, I take it?

I have separate meter base and disconnect - they're back-to-back.

Speedy Petey 03-24-2013 08:12 AM

Some areas still allow it, most prohibit it.

I'd run my grounds to the disconnect, but if your area allows it to the meter pan and it's done already, leave it.
We ran grounds to meters for a hundred years.

sirsparksalot 03-24-2013 08:22 AM

Thanks guys.

sirsparksalot 03-24-2013 08:58 PM

Hey guys,

I left the EGC connection to the meter socket, per Speedy, as it was already installed.

I'm not sure if the neutral and ground on the disco needs bonding, though, since the bond is at the meter. Thoughts?

Edited to show EGC instead of GEC :blush:

sirsparksalot 03-25-2013 03:36 AM

Bumping:

I know it's usual to bond neutral and ground at Disconnect, but I'm not sure if it's needed with the EGC connected to the meter socket

Help?

electures 03-25-2013 07:37 AM

Quote:

Originally Posted by sirsparksalot (Post 1144320)
This is a 4-wire 200amp for mobile home.

Should the bare ground be ran to the ground rod from the meter, from the disconnect, or from the panel inside the home?

It IS allowed in my area to ground at the meter, but I don't see a terminal in there for the #6 Bare.

I'm using 4/0-4/0-2/0-2 AL.

FYI - You can not enter this enclosure from behind or from the right hand side with 4/0. It can only enter from the bottem or left side.

sirsparksalot 03-25-2013 02:02 PM

Quote:

Originally Posted by electures (Post 1145191)
FYI - You can not enter this enclosure from behind or from the right hand side with 4/0. It can only enter from the bottem or left side.

Article please? It's done all the time around here, as I hear :)

sirsparksalot 03-25-2013 02:06 PM

1 Attachment(s)
BTW: here's the install

stickboy1375 03-25-2013 06:26 PM

Quote:

Originally Posted by sirsparksalot (Post 1145523)
BTW: here's the install

Why the heck is the panel so far above the top of the post? It would have looked so much cleaner if you drove two posts and installed 1x4's between the post, then mounted the equipment next to each other...

sirsparksalot 03-25-2013 07:10 PM

Quote:

Originally Posted by stickboy1375 (Post 1145748)
Why the heck is the panel so far above the top of the post? It would have looked so much cleaner if you drove two posts and installed 1x4's between the post, then mounted the equipment next to each other...

Yeah, I know. :sick::sick::sick: I didn't measure correctly.

AND, I had already punched the KO on the meter base without realizing that I needed to punch a 2.5" hole to center the darn thing. Once I punched the KO, I didn't think I'd be able to make a different KO to center it.

sirsparksalot 03-25-2013 07:13 PM

I passed inspection on this, but I'd still like an answer to the original: I forgot to bond the neutral and ground on the disconnect. I want to know if I should bother to go out there and bond it seeing that this is a 4-wire system AND the EGC is connected at the meter base, AND it passed inspection?

sirsparksalot 03-25-2013 07:15 PM

Quote:

Originally Posted by stickboy1375 (Post 1145748)
Why the heck is the panel so far above the top of the post?

IN ADDITION: Had I brought the disco down to top level, it would have made the meter below the required 3'-5' requirement, as the post is only 8'.

stickboy1375 03-25-2013 07:24 PM

Quote:

Originally Posted by sirsparksalot (Post 1145782)
Yeah, I know. :sick::sick::sick: I didn't measure correctly.

AND, I had already punched the KO on the meter base without realizing that I needed to punch a 2.5" hole to center the darn thing. Once I punched the KO, I didn't think I'd be able to make a different KO to center it.

So how high off the ground is the main breaker?


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