220.61(b)(2)

[thetacon]

For calculating the Neutral load on a 120/240 3 phase service am i allowed to use the 70% demand factor.

 

[gndrod]

For calculating the Neutral load on a 120/240 3 phase service am i allowed to use the 70% demand factor.

Only for standard method. rbj

 

[glene77is]

Calc Neutral Current

Calc Neutral Current

For calculating the Neutral load on a 120/240 3 phase service am i allowed to use the 70% demand factor.

This may be off the subject a little,
just passing it along because it is so neat.

* EL_IneutralCurrent_equation.txt
Ineutral =
SQRT (
I?A + I?B + I?C
- (IA x IB) - (IB x IC) - (IC x IA)
)

 

[don_resqcapt19]

This may be off the subject a little,
just passing it along because it is so neat.

* EL_IneutralCurrent_equation.txt
Ineutral =
SQRT (
I?A + I?B + I?C
- (IA x IB) - (IB x IC) - (IC x IA)
)

That would not apply to a 120/240 volt 3 phase system.

 

[erickench]

Are you sure it's 3 phase and not 3 wire? Check again.