I'm a tad saddened by a few New Members here that think that Electrical Contractor Network is an Area where you can drop a question in and you will get an instant answer to your problem.
Now, before I get knocked down for saying it, what is the point of training as an Electrician or any sort of Electrical worker, if you merely have the answers thrown at you?.
Wether people like it or not, you have to do the "hard yards" of calculating math in your head or on paper, you still have to do it.
H*ll I didn't like it either, but I got there.
Electrical Theory is not that difficult, I'm proof of that.
Just as a note, if anyone is looking to have thier exam questions answered for them, forget it, go the same route as we had to, work it out for yourself.
Don't for a second think that I am getting down on Electrical trainees, but thinking "Oh I can't do it, It's too hard" is just a cop out.
Exercise the grey matter, that is what is lacking these days.