2 feeders, 1 service

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INGMRS

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san jose, Costa Rica, code NEC USA
Sirs,


I wonder if it is possible to install 2 feeder disconnect , one for each floor (a home of two levels) with a panelboard of 4 spaces, all this for only one service?


Please, see the image below as reference.
 

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From one service point (one to six disconnects) you can install as many feeder panels as you wish in one in one structure.
 
augie47 said:
From one service point (one to six disconnects) you can install as many feeder panels as you wish in one in one structure.
Click to expand...

Thanks for your pronpt answer,

I see, I thought that this is correct only if you are installing different meters in one service, something like is in the image bellow.
QA_ITA_1.jpg


But, As I understood you, is correct to install a panelboard without main breaker and also use it to install different breakers to fed different loads, then the photograph shown below is correct, right?.

66e7a3d8-5e67-496a-b491-f710ca96b869

Thanks for your help, regards,
66e7a3d8-5e67-496a-b491-f710ca96b869
 

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Where are the red/blue conductors going to connect ? and where do they terminate ?
 
INGMRS said:
....
I see, I thought that this is correct only if you are installing different meters in one service, something like is in the image bellow.

But, As I understood you, is correct to install a panelboard without main breaker and also use it to install different breakers to fed different loads, then the photograph shown below is correct, right?.
...
Click to expand...
You can use one SUSE MLO panelboard with up to 6 disconnecting means per service entrance conductor.
 
Smart $ said:
You can use one SUSE MLO panelboard with up to 6 disconnecting means per service entrance conductor.
Click to expand...

Hi,

My question also concerns the absence of the main breaker before any load breaker, i mean for a house, i have not seen before a small load center with several breakers that work as feeders for different areas of the house that reach sub-panels, the normal configuration is one main breaker after the meter and a main load center inside the house for the different branch circuits.


So, if you can give me the code article that support the configuration of the picture(i mean several breaker without main breaker), i would appreciate it so much.


Thanks and regards,
 
230.7 1 and 408.36 Exception 1 allow a MLO (no main) panel-board with up to 6 breakers as the service disconnect provided the panel-board meets 230.66 and is capable of carrying the load.
I see no way the unconnected wires can be connected without producing violations.
 
augie47 said:
230.7 1 and 408.36 Exception 1 allow a MLO (no main) panel-board with up to 6 breakers as the service disconnect provided the panel-board meets 230.66 and is capable of carrying the load.
I see no way the unconnected wires can be connected without producing violations.
Click to expand...

One more question, what kind of panel-board meets the requirements of the section 230.66?, I mean, the panel-board of the picture could work for this?

Regards,
 
INGMRS said:
One more question, what kind of panel-board meets the requirements of the section 230.66?, I mean, the panel-board of the picture could work for this?

Regards,
Click to expand...
As 230.66 states, the panelboard shall be marked to identify it as being suitable for use as service equipment (SUSE). So look at the panelboard label. A typical indicator is if the panelboard is furnished with a green machine screw that when installed, bonds the [otherwise isolated] neutral bar to the enclosure/EGC bus terminal. The screw serves the purpose of the main bonding jumper(MBJ). In some panelboards, it is a bonding strap (usually not green ;)).
 
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