ALLOWABLE VOLTAGE

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asdbagdad

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Location
baghdad,iraq
HELLO mike, in optional method NEC specified single phase voltage 120/230 V, but the electrical system in iraq is 240/380 V 3 phase , first can i use optional method to calculate electrical loading here in Iraq. second can i used 240 V to calculate general lighting load amperage instead of 120 V used in USA.

general lighting load= 2400 watt
ampacity is 2400/120= 20 amp in USA
Can I use the following instead:
2400/240=10 amp (for 240 v single phase here in Iraq)
thank you I'm waiting your answer :)
 
By the nec I would say no.. 3 phase is not a choice

(A) Feeder and Service Load. This section applies to a
dwelling unit having the total connected load served by a
single 120/240-volt or 208Y/120-volt set of 3-wire service
or feeder conductors with an ampacity of 100 or greater
 
HELLO mike, in optional method NEC specified single phase voltage 120/230 V, but the electrical system in iraq is 240/380 V 3 phase , first can i use optional method to calculate electrical loading here in Iraq. second can i used 240 V to calculate general lighting load amperage instead of 120 V used in USA.

general lighting load= 2400 watt
ampacity is 2400/120= 20 amp in USA
Can I use the following instead:
2400/240=10 amp (for 240 v single phase here in Iraq)
thank you I'm waiting your answer :)

is a home supplied by
4 wire 3 phase 240/380
or
3 wire 1 phase 240/380 (basically just use 2 legs and ground/neutral from a 3 phase distribution transformer)
???
 
Sure you can use 240v to calculate the load but that would not be part of the optional methods. You use 240 as you posted to calculate the load on the circuit or the load for the building at 240/380
 
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