not sure why you are part of an internet forum then...
You know he was joking, right? If you think that I am not trying to help you, I am not communicating effectively. I am encouraging you to learn how this works on a fundamental level, and for that you'll need to do some homework. Once you understand something and work from that knowledge rather than doing things by rote, it is like riding a bike.
This was calculated using 3ph math and cause my error. thank you for the people with the useful input that helped me discover my mistake
The corrected numbers are as follows:
Adding phase currents to determine line current is not a small detail; it shows a lack of understanding of the fundamentals. I am not slamming you for that, I am encouraging you to educate yourself so that the answers you get make sense.
If the OP is in a position where he needs to make design decisions, then IMO he should understand the basics behind the calculations he is running to make those decisions. Blindly applying formulas by rote is prone to error.
thank you. I apricate this. I think engineers forget that sometime we HAVE to do their jobs and its a shame, but there is never an instance when they HAVE to do ours.
it wasn't blindly, I could tell there was an error right out of the gate, which is why I reached out here, for help. if it was blind then i would of not had the sense to ask the question in the first place.
Keep asking your questions that's the purpose of this forum. Ignore those who are critical.
Except there wasn't an error. The engineer's design for a 600A panel was correct for the calculated load.
when I did the math on my own and came up with only needing a 200a panel is when I thought there was an error, what I wasn't sure about at the time was if the engineer over designed the system, which is extremely common these days or if the error was in my math. come to find out it all stemmed from my unfamiliarity with the math, I now understand it much better thanks to some here. there is a big cost diffrence between needing a pad mount xfomer vs a pole mount, the utility typically requires pad after 400a, i was asked by the customer to look for cost savings and i thought i might of found some.
If I gave the impression of being critical, I apologize. What I was trying to get across is that if one is in the position of making design decisions or evaluating those which were made by someone else, it would be useful to understand the underlying principles upon which the decisions are made. I hope that what I posted in #25 was informative.
Yes, it was thank you. Much more useful then "why are you working on something you don't understand". which just for the record, I'm trying to understand it better, hence the questions.
My concern was only that decisions might be made with less than optimal results if one is making them without understanding the principles underlying them. I did not mean to slam you personally, and I am sorry if what I said looked that way.
No worries. trust me I don't take anything on the internet personal. I'm just trying to point out that a comment like that doesn't do anybody any good, if your not interested in helping an OP I don't see any reason you wouldn't just scroll past the post. Thanks again.
At the risk of flogging a deceased equine mammal, I thought that I was helping you. Personally, I remember much better how to do something when I understand why I am doing it. YMMV.
