is there any code restriction regarding max branch circuit per panel and unbalance

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The panel itself will have some of that info not the NEC. For instance, many panels will say max amps per stab. In this case you if the max. amp per stab was 100 amps then you you not have a load of 60 amps and 60 amps opposite each other on the panel because that would be 120 amps on the stab.
 
mustafa said:
is there any code restriction regarding max branch circuit per panel and unbalance percentage between phases?
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I am not entirely sure what you are asking but there are no restrictions on the quantity of branch circuits in a panel, nor on how unbalanced they are. Those are strictly design considerations.

However, you still have to abide by whatever calculated load you came up with for each branch circuit, and then for the feeder circuit(s).
 
petersonra said:
I am not entirely sure what you are asking but there are no restrictions on the quantity of branch circuits in a panel, nor on how unbalanced they are. Those are strictly design considerations.

However, you still have to abide by whatever calculated load you came up with for each branch circuit, and then for the feeder circuit(s).
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as standard practice, we ask for 5% max unbalance between phases. any code reference for that or it is just a common /design practice?
on the other hand i think its manufacturer recommendation about max over current devices per panel
 
mustafa said:
as standard practice, we ask for 5% max unbalance between phases. any code reference for that or it is just a common /design practice?
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You can balance out the calculated loads between phases. It is generally the most economical way to handle things but there is no way to know what the real loads are going to be and how balanced or unbalanced they will be when actually running.
 
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