NEC 310.15 E neutral conductor

roger said:
Ok let's use 10 for A
5 for B
8 for C

√(a² + b² + c² - ab - bc - ac)

A squared would be 10 x 10 =100
B squared would be 5 x 5 = 25
C squared would be 8 x 8 = 64
189

A x B 10 x 5 = 25
B x C 5 x 8 = 40
C x A 8 x 10 = 80
145

189
-145
_________
44
SQRT of 44 = 6.633

Now do the same calculation with just A and B
Click to expand...
Wait the result is wrong i got sqrt 19

10x5 =50 not 25
 
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