Number of meters

Status
Not open for further replies.

lmchenry

Senior Member
I have a building design that has 4 meters on one service with 4 disconnects. Everything fine so far. However the building has one tenant and there is no separation in the building. Does there need to be some sort of identification at the panels to say that there are other panels in the building?
 
lmchenry said:
I have a building design that has 4 meters on one service with 4 disconnects. Everything fine so far. However the building has one tenant and there is no separation in the building. Does there need to be some sort of identification at the panels to say that there are other panels in the building?

There is no requirement for identification of the number and location of other panels within a building.

The 4 disconnects that constitute the service must be grouped so that you can shut all the power down at one location. (See 230.72) They must also be marked to indicate the load served but not neccessarly the location of the panels that are served.

Chris
 
It is my opinion that the code does not require that the service disconnects for one meter be grouped with those for the other meters.
 
don_resqcapt19 said:
It is my opinion that the code does not require that the service disconnects for one meter be grouped with those for the other meters.

Thats an interesting opinion. So if I have a building that does not meet the criteria for having multiple services, but has four tenants with 4 separate meters and disconnects they would be permitted to not group the 4 disconnecting means?

Chris
 
This is a confusing section of the code for me. If you have the 05 handbook look at exhibit 230.13.

Am I correct in stating that a service lateral can have more than one service equipment enclosure. Each enclosure may then have up to 6 meters/discos in one group. Then say another occupant or more was added and another meter/meter pack was installed at another location. Still fed by the same service lateral. That meter or meter pack by itself may have 6 switches grouped.
 
The meters are pointless they serve only one purpose and that is for the power co. The grouping of the mains is the important thing. The NEC 2008 230.70 Service Equipment there the maximum number is 6 and grouped.
 
Each set of service entrance conductors is permitted to have up to six means of disconnect. The six disconnects for a single set of service entrance conductors must be grouped with each other, but there is no code rule that requires the six service disconnects from one set of service entrance conductors to be grouped with the six from a second set of service entrance conductors. There is also no requirement for a main when you have multiple sets of service entrance conductors each with their own set of six disconnects.
 
Does it have to do with 'If you have a fire wall between the disconnects they do not have to be grouped'.
As long as they are grouped in between each fire wall.
 
buckofdurham said:
Does it have to do with 'If you have a fire wall between the disconnects they do not have to be grouped'.
As long as they are grouped in between each fire wall.
No, it has to do with the number of sets of service entrance conductors.
 
Status
Not open for further replies.
Top