jcgjupiter
Member
I am confused
208/120 3 phase
A local published book here with examples show
for 208 208 1phase loads that are in kw to multiply them by .577
For example
3000 watt water heater 3000 x .577 = 1731
A B C
1731 1731
15kw 208 outside lights 12000 x .577 = 8655
A B C
8655 8655
But in Mike Holt's book page 445 same parameters
he takes a 10kw water heater 208v and splits it
5000va on A phase 5000va on B phase. Which seems logical to me.
What am i missing somebody please set me straight. Thanks in advance. I am scheduled to take the Oregon Part 2 on may 3rd and from what little info I have it is a real bastard. Its one question 2 hours, all service requirements, transformer sizes, panel balancing, on a large commercial building. Then they call you back in 3 weeks to interrogate you on your methodolgy.
208/120 3 phase
A local published book here with examples show
for 208 208 1phase loads that are in kw to multiply them by .577
For example
3000 watt water heater 3000 x .577 = 1731
A B C
1731 1731
15kw 208 outside lights 12000 x .577 = 8655
A B C
8655 8655
But in Mike Holt's book page 445 same parameters
he takes a 10kw water heater 208v and splits it
5000va on A phase 5000va on B phase. Which seems logical to me.
What am i missing somebody please set me straight. Thanks in advance. I am scheduled to take the Oregon Part 2 on may 3rd and from what little info I have it is a real bastard. Its one question 2 hours, all service requirements, transformer sizes, panel balancing, on a large commercial building. Then they call you back in 3 weeks to interrogate you on your methodolgy.