New home service

[Alelectric04]

Ok guys. New home, meter is going to be located about 75ft from the home on the side of another building which is right beside the transformer. It will feed a 200amp panel with pass through lugs which then goes to the home. Inside the panel will be another breaker to feed the building. The 200a main in the panel will act as the emergency disconnect for the home and the building. The ahj has already approved this. I am trying to figure out what cable to run from the panel to the panel inside the home. The panel will be in an interior room under the stairs. Not sure how to actually go about running the cable through the house to the panel since it’s not just on an exterior wall. Since the conductors will technically be fused can I just run them through the attic or drill the studs? Initial plan was to lb into the side of the house but worried about the bend radius of the cable. The house is on a crawl space.

 

[augie47]

Is your AHJ allowing you to ignore 225.31 & .32 ??

 

[Alelectric04]

Is your AHJ allowing you to ignore 225.31 & .32 ??

Ahj says since the the panel that will act as the disconnecting means is in plain sight and will be labeled as the emergency disconnect it is fine. I mean I can mount another disconnect on the house I just didn’t want to for cosmetics.

 

[augie47]

In that case,,, an underground conduit stubbed up at both panels... 1 pull, no LBs, no splices, etc,

 

[Alelectric04]

In that case,,, an underground conduit stubbed up at both panels... 1 pull, no LBs, no splices, etc,

I may not be able to stub a conduit into an interior wall depending on floor joist. That’s why I was wondering about what cable to use in case it needs to be ram through a stud or two.

 

[Rick 0920]

Table 310.12 - Dwelling Services and Feeders
200 Amp - 2/0 Copper or 4/0 Aluminum
Once out of the ground, if you need to run through floor joists, you could use a copper or aluminum SER cable.

 

[curt swartz]

You are going to need to either run the raceway all the way between the panels or make a transition between the underground conductors and interior cable.

If it were me I would install a disconnect on the house then run a cable method from it to the interior panel. I know you said the inspector is not requiring the disconnect but that doesn't mean you should ignore the NEC requirement. Unless the AHJ has adopted an amendment allowing you to not have the disconnect the inspector should not be suggesting you violate the requirement. Remember if something happens in the future the inspector has zero liability, its all on you.

 

[Little Bill]

Is your AHJ allowing you to ignore 225.31 & .32 ??

Trying to see how this violates 225.31?
225.31 is disconnecting means and the 200A MB panel will meet that.

If the panel in the house is a MB, and is located where you could enter it directly from outside, you wouldn't need an outside disconnect at the house would you?

 

[Rick 0920]

Trying to see how this violates 225.31?
225.31 is disconnecting means and the 200A MB panel will meet that.

If the panel in the house is a MB, and is located where you could enter it directly from outside, you wouldn't need an outside disconnect at the house would you?

Wouldn't NEC Art. 230.85 require one?

 

[Little Bill]

Wouldn't NEC Art. 230.85 require one?

We're still on the 2017 and I don't see a 230.85. I assume that is the new code for requiring a disconnect.

 

[augie47]

Trying to see how this violates 225.31?
225.31 is disconnecting means and the 200A MB panel will meet that.

If the panel in the house is a MB, and is located where you could enter it directly from outside, you wouldn't need an outside disconnect at the house would you?

225.31 might be a grey area except the wording of 225.32 seemingly addresses that disconnecting means...


225.32 Location. The disconnecting means shall be installed either inside or outside of the building or structure served or where the conductors pass through the building or structure. The disconnecting means shall be at a readily accessible location nearest the point of entrance of the conductors. For the purposes of this section, the requirements in 230.6 shall be utilized.

 

[Little Bill]

225.31 might be a grey area except the wording of 225.32 seemingly addresses that disconnecting means...


225.32 Location. The disconnecting means shall be installed either inside or outside of the building or structure served or where the conductors pass through the building or structure. The disconnecting means shall be at a readily accessible location nearest the point of entrance of the conductors. For the purposes of this section, the requirements in 230.6 shall be utilized.

If the panel in the house is a MB, and is located where you could enter it directly from outside, you wouldn't need an outside disconnect at the house would you?

 

[augie47]

I agree... My initial post was in relation to his running conductors (cable) thru the house. I am of the opinion that you would need an outside disconenct unless you met the same requirements as 230,.6 (referenced in 225.32) but apparently his AHJ does not think that's a requirement.

 

[lordofthisworld]

We're still on the 2017 and I don't see a 230.85. I assume that is the new code for requiring a disconnect.

yes, in the 2020 code, every new service and service change needs some type of outside disconnect. It's for firemen to cut the power off during an emergency

 

[lordofthisworld]

If the panel in the house is a MB, and is located where you could enter it directly from outside, you wouldn't need an outside disconnect at the house would you?

No, not if u are still on the 2017 code cycle.

 

[VirutalElectrician]

If it were me I would install a disconnect on the house then run a cable method from it to the interior panel. I know you said the inspector is not requiring the disconnect but that doesn't mean you should ignore the NEC requirement. Unless the AHJ has adopted an amendment allowing you to not have the disconnect the inspector should not be suggesting you violate the requirement. Remember if something happens in the future the inspector has zero liability, its all on you.

My AHJ has approved similar designs that I've done. As long as it's within reasonable distance and in site of the structure.