"Try the calculators listed above. I use them all the time, to save time."
You seem to be skipping over the thread to save time, too.
Read the thread carefully. According to the Original Poster:
"Can anyone help me with the formula?"
and
"I couldn't get the nooutage.com calculators, it wouldn't come up."
Try Googling "Voltage Drop Calculator" if that's what you want. Any one of a number of calculators should pop up.
