jsparky180
Member
I have a 400 amp service mounted on a pole where an overhead service from utility company ties in . There are 2 200 ampp breakers installed to feed 2 200 amp subs on the house 50 ' away. is this Legal?
How many Feeders can feed a house?
- Thread starter jsparky180
- Start date
- Status
- Location
- Logan, Utah
Welcome to the forum.
A dwelling can only be fed with a single feeder unless you meet one of the conditions in 225.30 (A) through (E).
Chris
A dwelling can only be fed with a single feeder unless you meet one of the conditions in 225.30 (A) through (E).
Chris
- Location
- Massachusetts
I will be bold and just say it ......... no not likely.
jsparky180
Member
there is one
jsparky180
Member
225.30 (B) (2) - A single building sufficiently large to make two or more supplies necessary.
- Location
- Massachusetts
It is not 'necessary' to break a 400 amp feeder into two 200 amp feeders.
If you had an commercial building that required more then 4000 amps then you would have a good argument to say it is necessary.
mjhelectric110
Member
must hit a ct first maybe?I have seen many houses with 2-200 panels
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
The difference is the origin of the supply of the feeders is from the same structure. I.E. 320 meter/disco's just out side.
The OP was talking about the supply of the feeders from a pole, which is a separate structure
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
In most areas here they allow us to mount a 320 on a pole hit the house with the 400 amp SEC's undergroung or overhead, to a tap box outside, then to two 200 amp disco's or main breaker panels just inside. in the other places thay will make us install a 400 amp disco on the pole. I guess to make sure the pole don't burn down if there was a fault lol
- Location
- Massachusetts
These are both ways I would suggest to the opening poster.
He may be able to place the two sets of 200 amp conductors in parallel and make one 400 amp feeder or one 400 amp set of service conductors and split them at the house.
Are the disconnects on the pole meter disconnnects?
Do the runs to the house include a egc??
This is a question.... Does it matter if the service disconnect(s) are mounted on the building or away from the building?
If the Meter base is remote, your allowed up to six service conductors to hit the building with six disconnects.
If the 1-6 service disconnects are remote from the building your limited to 1 per building because they are now feeders???
But,
If the 1-6 service disconnect(s) are attached to the building, your allowed as many sub panels as you want.
Rick
View attachment 3162
If the Meter base is remote, your allowed up to six service conductors to hit the building with six disconnects.
If the 1-6 service disconnects are remote from the building your limited to 1 per building because they are now feeders???
But,
If the 1-6 service disconnect(s) are attached to the building, your allowed as many sub panels as you want.
Rick
View attachment 3162
- Location
- Massachusetts
Rick in my opinion the location of the metering equipment has no impact at all on the rules.
The location of the service disconnecting means has an impact.
The location of the service disconnecting means has an impact.
Yes i agree, but to what extent. If the service disconnects are on the buiding, no problem. If they are mounted on a pedestal or pole 2' away from the building, does it become a 225.30 issue? If they are mounted on a pedestal or pole 50' away, is it the same as 2' away.
Rick
- Location
- Massachusetts
IMO if the service disconnect is at the pole then whatever conductors leave it are feeders regardless of it being 1' or 1000'.
charlie
Senior Member
- Location
- Indianapolis
The service disconnecting means has to have overcurrent protection with it unless it is a site-isolating device for a farmstead. :smile:
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
230.70(A)(1) Readily Accessible Location.
The service disconnecting means shall be installed at a readily accessible location either outside of a building or structure...
You have a good question, and we have mulled this over at our IAEI meetiongs, without a resolve.
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