15 is the answer, got to the next question. Logic? 240.4 (d) 05nec
! 15 is the smallest common breaker, and unless it breaks 9 wires (CCC's), most of the time, your good to go. It's a test question, figure you have 1 minute to read and answer each question on the first pass. If you can't make over 70% on that first pass, odds are not good. By the time you start your second pass through the test, you will have lost up to 5 minutes additional per question. Knowing needed a 70% on a test per section, would go to 75% on the test, then go to the next section.
Tests are revenue enhancers in a lot of areas. Think about some of the questions they ask. I normally shoot for a test score of 85 to 94%.
I wish they actually had a physical part for testing. Couple of three ways, with a four way in between. Hook up a motor controller, and a three phase transformer(25KW so it's small wire, want to see if you know how, not wrestle wire). Have a piece of AC present that is going to be installed into receptacle box ( want to see an anti-short installed). Bend some pipe (1/2" and 2") with something like a 90 and a 4 inch kick, not terribly hard, just a journeyman like things we have to do in the field.
Make the whole test six hours, for written (100 questions - 33 general knowledge, 33 theory and elementary calculations, 33 code, 1 for getting your name on the paper) and physical. have to get a 72% percent on both ends to pass.
Your score would be given to you as soon as you are done. First, it gives you chance to challenge. Second, whatever you miss, you now have an opportunty to see what defficiencies are holding you back. Third, you know you're walking away with a piece of paper that means something
/rant off>
