being that you are a 4th yr apprentice (according to your profile), if you are planning on taking your test and/or the contractor/master test, it would be a great idea to study the articles that apply so you know where to look for the answers to the questions that you have been asking. It is no small task to prepare for the test, and while it is perfectly ok to ask these questions, it is vital to you becoming an independant tradesman that you be able to find this stuff when you need it, and directly from the book. start at 240 and see how it leads to 440 for this item, and it will help you out.Thanks guys I just thought that it was rule of thumb not to load up a breaker more than 80%. Thanks again.
As the unit gets older, or if the voltage happens to be a little low the minimum size breaker may be more prone to tripping.what types of problems?.. and yes obviously 10awg