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3 phase Current
Voltege Drop = (Current x 1.732 x L x ( R * cos phy + X * Sin Phy ) ) / N
Single phase Volltage Drop = ( 2 x Current x L x ( R * cos phy + X * Sin Phy ) ) / N
DC current
VD = (2 x Current x R x L ) / N
where
R is cable resistance per meter
X is cable Reactance per meter
L is cable length
N is number of Run.
Please note that , Cable vendor provide voltage drop rating (mV/A/m) in cable catalog.
hence VD = (mV/A/m) Rating * L * Current.
