ericsherman37
Senior Member
- Location
- Oregon Coast
So I'm taking the Washington administrator exam this Wednesday (the 20th) and I'm studying up for it. I already have a Washington JW license. My question is, how much different is the JW exam from the Administrator exam?
On the JW exam I got 100% on the NEC component, and I only missed one question on the RCW/WAC section (which was brutal by the way). I understand that the administrator test has these two elements, plus calculations. So:
1) Are the NEC questions and RCW/WAC questions more or less the same caliber on the administrator test as on the JW test?
2) What kind of load calcs can I expect? I'm pretty studied up on single and multi-family dwellings. I'm fairly confident on my basic commercial calcs like restaurants and hotels and office buildings. But are there some crazy ones like... a hospital with a hospital occupancy and an office occupancy in the same building? Or an industrial building with tons of motors and maybe power factor correction systems? How far do they go with their stuff?
3) Can I expect to see various motor/transformer/ampacity/voltage drop calculations?
Any info would be nice
Edit: I've been using the Mike Holt NEC Exam Prep book's calculations section. For some reason, though, none of the residential load calc examples seem to have any mention of including an additional 25% of my largest motor in the service/feeder load calculation. I was taught as an apprentice that you have to do this (and 220.50 confirms it). So if I have an A/C unit, for instance, that gives me a nameplate current rating, and the A/C compressor in that unit also happens to be my largest motor, how do I figure that into the overall service calculation? Do I add an additional 25% of the VA of the whole A/C unit? Or do I have to figure out what HP motor is in it and go from there?
On the JW exam I got 100% on the NEC component, and I only missed one question on the RCW/WAC section (which was brutal by the way). I understand that the administrator test has these two elements, plus calculations. So:
1) Are the NEC questions and RCW/WAC questions more or less the same caliber on the administrator test as on the JW test?
2) What kind of load calcs can I expect? I'm pretty studied up on single and multi-family dwellings. I'm fairly confident on my basic commercial calcs like restaurants and hotels and office buildings. But are there some crazy ones like... a hospital with a hospital occupancy and an office occupancy in the same building? Or an industrial building with tons of motors and maybe power factor correction systems? How far do they go with their stuff?
3) Can I expect to see various motor/transformer/ampacity/voltage drop calculations?
Any info would be nice
Edit: I've been using the Mike Holt NEC Exam Prep book's calculations section. For some reason, though, none of the residential load calc examples seem to have any mention of including an additional 25% of my largest motor in the service/feeder load calculation. I was taught as an apprentice that you have to do this (and 220.50 confirms it). So if I have an A/C unit, for instance, that gives me a nameplate current rating, and the A/C compressor in that unit also happens to be my largest motor, how do I figure that into the overall service calculation? Do I add an additional 25% of the VA of the whole A/C unit? Or do I have to figure out what HP motor is in it and go from there?
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