Voltage Drop. Hotel Electrical System.

[Spanish Engineer]

Hi at all,

Today I need help about voltage drop. In Spain the National Code demads that the maximum voltage drop is 5% for lightning loads and 6.5% for motor loads. In NEC I think that there are no restriction but if it?s advisable that no more of 3%. Is this correct?.
Please where can I read voltage drop in NEC?.
Thanks in advance.

 

[billsnuff]

voltage

voltage

drop

branch circuit 210.19A FPN#4
Conductors 310.15A! FPN#1
feeders 215.2A# FPN#2
electronic equip 647.4D

2005 NEC

 

[Spanish Engineer]

Thanks for your help

Thanks for your help

Thanks for your help.