Separate Loads

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al said:
230-40 Exception #2 mentions "separate loads". Does anyone know what this means?
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Think of a strip mall or condo's. One drop or lateral serves a number of meters then disco's. This is another example of the Handbook Exhibits being use full.
 
chris kennedy said:
Think of a strip mall or condo's. One drop or lateral serves a number of meters then disco's. This is another example of the Handbook Exhibits being use full.
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Are you referring to exception #1 with your example?
 
al said:
Are you referring to exception #1 with your example?
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No Al, Exception 2 "separate enclosures" "separate loads". POCO drop or lateral hits a gutter than taps off to up to 6 enclosures that serve 6 different tenants or loads.
 
chris kennedy said:
No Al, Exception 2 "separate enclosures" "separate loads". POCO drop or lateral hits a gutter than taps off to up to 6 enclosures that serve 6 different tenants or loads.
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But exception #1 would be seperate tennants with disconects not grouped.
 
al said:
But exception #1 would be seperate tennants with disconects not grouped.
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Al, I don't see where this is going. Your OP was a question about separate loads. What are you working on?
 
chris kennedy said:
Al, I don't see where this is going. Your OP was a question about separate loads. What are you working on?
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If you had two panels under exception #2 and one panel supplied the heating elments for an electric furnace and the other supplied the blower motor for same in the same equipment.
 
al said:
If you had two panels under exception #2 and one panel supplied the heating elments for an electric furnace and the other supplied the blower motor for same in the same equipment.
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Are you designing this or trying to see if an existing installation is code compliant? Your not giving us enough info. here. It sounds to me you have multiple feeders not SE conductors.
 
al said:
If you had two panels under exception #2 and one panel supplied the heating elements for an electric furnace and the other supplied the blower motor for same in the same equipment.
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Would these be considered separate loads? They are electrically separate but in the same equipment.
 
The main rule says that a service drop or lateral can only supply one set of service entrance conductors. The service entrance conductors are those between the line side of the service disconnect and the service drop or lateral. If exception #2 did not exist, there would be no way to install the 2 to 6 service disconnects permitted by 230.71 unless the disconnects were breakers in a common enclosure. This exception permits 2 to 6 sets of service entrance conductors to be used to supply multiple service disconnects that are not in a common enclosure.
As far as the seperate load issue, unless the conductors are paralleled at the load end, there is no way that seperate disconnects do not supply seperate loads.
Don
 
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