currentRes = 500*10^-6ohm  = 0.0005 ohm This is shunt is spected normizing for current between +/-165A OpAmpGain = 0.01 V/A MaxDefultCurrent = 165A MaxSences = OpAmpGain*MaxDefultCurrent  = 1.65 V AcctualMaxCurrent = 10A Scale the shunt resistance ShuntScaller = 10 NewShunt=ShuntScaller*currentRes  = 0.005 ohm Power = AcctualMaxCurrent^2*NewShunt to W  = 0.5 W   CurrentNormMax = 16.5 Rnew = 1.65/CurrentNormMax  = 0.1