Homework As I said in the thread “Question” this is becoming a problem on other engineering boards with students wanting the answers to a question set by their tutor. As a rule of thumb help will be given in pointing them in the right direction, but NOT the outright answer. A classic was an engineer having problems with the neutral in a 3Ph system caused by 3rd harmonics causing over heating of the conductor. He gave the relevant information and got a good reply. A couple of days later “what is harmonics” from a student, answer “what ever is pleasant to the ear”!