Bonding New Service

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mike n

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I am about to change out a fairly new panel that has been damaged by water.
The service is residential 120/240 200a.
The service is fed underground to a 18x18x10 metal terminal box (mounted on the basement wall).

From there the service condutors go to the meter enclosure via a 2" PVC conduit.
After the meter enclosure the conductors then go to the panel via a 2" RMC nipple.
The panel side of this nipple has a bonding bushing with a #4 to the ground bar.
The main breaker is in this panel and everything else is up to par.

My question is as follows:
The terminal box,should I bond this to the service?
The PVC breaks the path of ground to the meter socket.
Opinions?
thanks in advance
 
In what manner are the wires fed into the 18x18 box?

And, this is on the Line Side of the meter correct?
Will your power Company allow you to bond it off a lug (if provided) in your meter can?
 
The 18x18 is fed by the POCO service lateral via a 2.5" under ground raceway (RMC?)
It is old pre-pvc.
Thanks
 
Pierre C Belarge said:
If this box is located on the line/supply side of the service disconnecting means, you can bond the grounded conductor to the enclosure.
Click to expand...

The PVC raceway between the terminal box and the meter would prevent objectionable current. Bonding the grounded conductor to the terminal box is not a bad idea.
 
erickench...

When he does bond the terminal box to the grounded conductor wouldn't objectionable current flow over the terminal box and the incoming RMC connected to it?

Wouldn't this also create stray voltage in that the RMC in contact with the earth carries this objectionable current?

Maybe in some cases dangerous levels of stray voltage?

shortcircuit2
 
Did'nt say if the supply side service raceways were metal or PVC. I would have thought that the main bonding jumper at the service disconnect and the grounded service conductor in the terminal box would have created a parallel path if the connecting conduits were metal.
 
In post #5 Mike mentions it is (RMC?)...but doesn't appear to be sure.

I don't have much experience with city distribution systems and how the underground is fed from the street to the terminal box.

How would the conduit be terminated in the manhole at the street?

shortcircuit
 
In this part of Boston,the manholes are in the middle of the street.Each manhole feeds (6)
houses.A concrete duct extends to within (5) feet of the house foundation.From this point the POCO inserts a metalic conduit into the duct and seals it.This conduit then enters the basement of the house (and into the 18x18 terminal box).

So my concern is the possibility of this terminal box becoming energized.
 
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