Bonding of CT can and disconnects

[sw_ross]

How else would you bond the CT Cabinet?

It appears the neutral termination is insulated? Would not those just be supply side bonding jumpers?

If the grounded conductor termination in the CT cabinet is insulated from the can I dont think Id have a problem with the wire(s). (cant verify the sizing though)

Yes the neutral block is isolated. I’m thinking it needs to be bonded to the can?

 

[Buck Parrish]

In the can the terminal block for the neutral is isolated from the can so I’m thinking a bonding wire/screw needs to be added?

After further review I agree.
Although we can not be sure from the pic that it's not bolted to the can .
Also what is to the left in the can?

 

[sw_ross]

You're right on both points. It's there and it appears to be too small.

Added: The ends of the top PVC nipple need water-proofing.

The green is #4 based on 250.102.3(c)
The service conductors are 4/0 Al

 

[sw_ross]

After further review I agree.
Although we can not be sure from the pic that it's not bolted to the can .
Also what is to the left in the can?

The meter is to the left (outside of the picture)
It also has a #4 bond wire.
The meter will get wired up when the poco shows up (usually they use #12 THHN

 

[Joe Villani]

I agree with the bonding the grounded conductor in the can.

I think there is an empty terminal on the grounded terminal block for a suppy side bonding jumper that would have saved a bunch of material, labor and terminal space in the disconnect switches

But as shown what is the nec violation?

 

[sw_ross]

So what about this setup?
This was done by a different J-man from the same company.
I like how the neutrals were terminated here. The only green wires you see are between the gutter and the disconnects, except for the bonding bushing in the can.

 

[sw_ross]

Sorry, I’m not sure why my picture shows up as duplicate….

 

[qcroanoke]

View attachment 2564903 View attachment 2564903
Disregard the termination of the first disconnect- it was changed after the picture was taken!

I'm glad I make a practice of reading a post thoroughly before i come back and ask a question that has already been answered.......

 

[Joe Villani]

The grounded conductor is bonded to the can.

It's good.

I'd need to check the rigid nipple connection though

 

[sw_ross]

View attachment 2564904 View attachment 2564904
So what about this setup?
This was done by a different J-man from the same company.
I like how the neutrals were terminated here. The only green wires you see are between the gutter and the disconnects, except for the bonding bushing in the can.

Obviously you all are going to point out the line/load termination…,
Somehow the Master electrician got approval to reverse feed the discos. It makes termination easier but isn’t to industry standard. Apparently Schneider signed off on it…

 

[Joe Villani]

If those breakers are not marked line and load you can feed them either side.

Keep in mind I'm figuring the handle orientation is correct

 

[sw_ross]

If those breakers are not marked line and load you can feed them either side.

Keep in mind I'm figuring the handle orientation is correct

If I remember correctly I think the switch was just labeled on/off?

 

[Joe Villani]

Up in the on position is what I was referring to...

 

[Joe Villani]

After looking in more detail the bonding and GEC installation in regards to the wireway and disconnects needs to be reworked in the second set of pictures

 

[electrofelon]

There should not be a green conductor feeding any of the service switches.

No but there can be SSBJ's "back" to the CT can to bond it. IMO you can either bond the CT can "directly" to the neutral, or you can bond it with SSBJ's to the neutral elsewhere (the service disconnects). Problem is he did both and I think thus the violation would be the parallel conductor rules.

 

[electrofelon]

If those breakers are not marked line and load you can feed them either side.

Keep in mind I'm figuring the handle orientation is correct

I agree. I would put line in the bottom without thinking twice about it.

 

[jaggedben]

View attachment 2564904 View attachment 2564904
So what about this setup?
This was done by a different J-man from the same company.
I like how the neutrals were terminated here. The only green wires you see are between the gutter and the disconnects, except for the bonding bushing in the can.

The GECs (is there more than one?) do not appear to be connected to the neutral. They need to be.

Not sure what I make of the green jumpers between the disconnects and the gutter. Seems like there's a better way.

The neutrals on the bar in the CT can is basically fine but perhaps the incoming and outgoing ought to have been staggered so that all the current doesn't pass through the middle of the bar. Some multi-tap connectors have instructions along those lines.

I find it weird the line and load side tape colors are different, but that's just me.

 

[augie47]

FWIW The second install would not be accepted here as "Myers" nubs used on service conduits require a bond jump[er

 

[jaggedben]

FWIW The second install would not be accepted here as "Myers" nubs used on service conduits require a bond jump[er

Even if there's a grounding bushing on the other end?