So following this, and your responses, instead of ""current constant = (100 ÷ 0.050) ÷ 18 = 111.11"" 111.11

I should use : current constant = (100 ÷ 0.050) ÷ 53.5 = 37,383 // 51 = 39,215 ?

This response is really meaningless without defining any of your terms.

You have made no effort to define what any of those numbers represent.

We can recognize the 100 to be 100A (measured by the CT, also called I

_{IN}We can recognize the 53.5 as the calculated burden resistor (from Wawa and my calculations)

We can also recognize the 51 to be the closest standard resistor value for the burden resistor.

I have no idea what this is supposed to represent:

current constant = (100 ÷ 0.050) ÷ 53.5 = 37,383 // 51 = 39,215 ?

It is standard practice to present you formula first (with NO VALUES)

and THEN present your solution, in the format (shown in MY calculations)

FORMULA BLAH +BLAH = BLAH

EXAMPLELet Blah-A = blah

Blah-B = blah blah

Blah-C = blah blah blah

Then,

BLAH +BLAH = BLAH (with values)

This part is particularly confusing:

constant current = 39,215

What is 'constant current ?'

and

if current is represented in Amps (A)

WHAT is 39,215 ?

Is that 39,215 A ? (I hope not)

Is that 39,215 mA ? (if so , WHERE ARE THE UNITS ?! ("mA")

Is that 39,215 V (I hope not)

If it is not Amps, and it is not volts , then if it is ohms, WHERE ARE THE UNITS ?! ("Ohms")