There really are two questions here.
1..Do details of wire construction, other than adequate copper size, make a difference?
2..If "Yes" to question 1, does "properly" constructed wire require absurdly high cost?
I am undecided about question 1, but for question 2 the answer is NO.
1..Do details of wire construction, other than adequate copper size, make a difference?
2..If "Yes" to question 1, does "properly" constructed wire require absurdly high cost?
I am undecided about question 1, but for question 2 the answer is NO.