Steve, I'm a little confused as to where 220.3(B) comes in to play with motor feeders.

The answer to the question would be "B" #2

Table 430.150 shows 41 amps for your 40 hp

and 14 amps for the 10 hp.

41 amps with a 1.1 mutiplier = 45.1

largest motor x 125%

45.1 x 1.25 = 56.38

56.38 + 45.1 + 14 = 115.48

115 amps, .48 could be dropped,

**but,** if you know the test is going to force you to round to the tenth, you would have to raise the .48 to .5 and take you to 116 amps meaning #1 THW.

Now, in reality if you converted 116 amps at 460 v to watts, you could then divide by your true voltage of 480 x 1.732 and get down to 111 amps.

Sorry about the rambling.

Roger

[This message has been edited by Roger (edited 02-21-2003).]