Service Conductors vs Feeders

[Little Bill]

230.3 says this:

230.3 One Building or Other Structure Not to Be Supplied
Through Another. Service conductors supplying a
building or other structure shall not pass through the interior
of another building or other structure.

If you have a 400A service with two 200A disconnects outside, one disconnect is for the building it's mounted on, the other is for a separate building. Would 230.3 prevent running the conductors for the 2nd building through the 1st building?

Before anyone says or mentions it, the 2nd building will have a MB panel. The feed will enter it from the outside back-to-back to the panel.

 

[MAC702]

Is it still a "service" past that disconnect? I don't see a prohibition.

 

[jumper]

Is it still a "service" past that disconnect? I don't see a prohibition.

Not a service, legit.

 

[publicgood]

Are the disconnects fused? This comes down to what these conductors are.

 

[Cow]

They're only service conductors right up to the OCPD. After that they're feeder conductors.

Like the guy above me mentioned, are those fused disconnects? I can't see how they wouldn't be unless your AHJ is VERY lenient on allowing service conductors inside a building.

 

[jumper]

They're only service conductors right up to the OCPD. After that they're feeder conductors.

Like the guy above me mentioned, are those fused disconnects? I can't see how they wouldn't be unless your AHJ is VERY lenient on allowing service conductors inside a building.

The disconnect does not have to be fused. The OCPD can be part of the disconnecting means or it can be separate and merely located near/adjacent to the disco.

 

[Cow]

The disconnect does not have to be fused. The OCPD can be part of the disconnecting means or it can be separate and merely located near/adjacent to the disco.

I'm aware of that, but I don't know too many people that install regular nonfused service rated disconnects just to put the OCPD right beside it. I know it happens, but it's not very likely.

 

[jumper]

I'm aware of that, but I don't know too many people that install regular nonfused service rated disconnects just to put the OCPD right beside it. I know it happens, but it's not very likely.

I was just commenting on the “ I can’t see how.....”. You kinda imply that they gotta be one piece of equipment.

Like the guy above me mentioned, are those fused disconnects? I can't see how they wouldn't be unless your AHJ is VERY lenient on allowing service conductors inside a building.

 

[Little Bill]

The disconnects are 200A main breaker 3R panels.

 

[romex jockey]

well then 225.31 applies......~RJ~

 

[Dennis Alwon]

Bill, once you leave the disconnects you have feeders not service conductors so there is no issue with running the feeder thru the building

 

[Little Bill]

Bill, once you leave the disconnects you have feeders not service conductors so there is no issue with running the feeder thru the building

That's the way I was figuring it. I just was thinking ahead of what the Inspector might have to say. Sometimes they need "schoolin" just like us!

 

[ggunn]

230.3 says this:



If you have a 400A service with two 200A disconnects outside, one disconnect is for the building it's mounted on, the other is for a separate building. Would 230.3 prevent running the conductors for the 2nd building through the 1st building?

Before anyone says or mentions it, the 2nd building will have a MB panel. The feed will enter it from the outside back-to-back to the panel.

What it boils down to, I believe, is that you cannot run unprotected conductors through one building to service another.

 

[david]

230.3 says this:



If you have a 400A service with two 200A disconnects outside, one disconnect is for the building it's mounted on, the other is for a separate building. Would 230.3 prevent running the conductors for the 2nd building through the 1st building?

Before anyone says or mentions it, the 2nd building will have a MB panel. The feed will enter it from the outside back-to-back to the panel.

Both 200 amp grouped service disconnects would be considered the service for the 1st building

 

[RoyceM]

What it boils down to, I believe, is that you cannot run unprotected conductors through one building to service another.

I didn't know this was forbidden. Is it a building code violation or something?

 

[Little Bill]

I didn't know this was forbidden. Is it a building code violation or something?

Electrical code, see post #1.

 

[ggunn]

Electrical code, see post #1.

Furthermore, it makes sense. Go figure.

 

[jumper]

Furthermore, it makes sense. Go figure.

Where does it say that anything in the NEC has to make sense........

 

[ggunn]

Where does it say that anything in the NEC has to make sense........

It doesn't, hence the ironic tone of my post.