Hi
The company I work for is putting together a test to test new employees tech skills. I wanted to try and get some questions from you guys that may be beneficial to ask.
The two best test questions I know of are:
1. List five of the six general requirements for paralleling conductors.
I've been on several interview panels for hiring inspectors an no one has ever had a correct answer.
2. How do you test the impedance of a ground rod?
That one's got to be "D" -- I've never seen copper or aluminum that was any of those colors. Well, I have seen green copper, but I don't think it would make a very low resistance connection without being cleaned up until it's no longer green.One of my favorites that many get wrong is:
The Grounded conductor shall be _________ in color.
A. Green
B. White
C. Black
D. None of the above
That one's got to be "D" -- I've never seen copper or aluminum that was any of those colors. Well, I have seen green copper, but I don't think it would make a very low resistance connection without being cleaned up until it's no longer green.
Now, if the question had asked about the conductor's outer covering, it would be a different story ...
I really have to wonder, if nobody has ever been able to answer it, is it really a good test question? I mean its a great "stump the engineer or inspector" type question. But if you are going to use it to screen job applicants, at least give partial credit for getting some of them right, or for having some vauge idea that things like the same length and same size are important.
I've already named two - I guess I might as well see if I pass or fail:
1. Equal to or larger than 1/0 (unless an exception is met)
2. Same conductor size.
3. Same length.
4. Same conduit characteristics (same conduit size and routing).
5. Same conductor material.
I can't think of #6, unless #4 should be counted as 2.
I really have to wonder, if nobody has ever been able to answer it, is it really a good test question? I mean its a great "stump the engineer or inspector" type question. But if you are going to use it to screen job applicants, at least give partial credit for getting some of them right, or for having some vauge idea that things like the same length and same size are important.
True or false:
A molded case circuit breaker can be cleaned with soap and water.
Depends on what the employee is going to do, slinging MC and installing 2x4's
Can you wire a 3-way?
Fire LAlarms
PLC's
Trouble shooting
just depends.