ECN Forum Forums General Topics of the Trade General Discussion Area 3 phase voltage drop calculations

Hi

My name is Greg and I work over in Bosnia on a Canadian S.F.O.R. base for a company out of Calgary.As much as I try to do my best to keep to the C.E.C. when doing work, it is not always possible to do, due to supplies or manpower. I found this site yesterday and look forward to using it often for keeping up with my code and hopefully for some help when I get stuck. I have a formula out of the N.E.C. for 3 phase voltage drops that talks about a Q factor for cables above 2/0 .1)What is the Q and how do i use it ?
2) Is there a better calculation I can use for 3 phase calculations? Many of our runs are very long, and alot of our services are large so I like to be right before I purchase cables
Thank you for your time and look forward to hearing some results
Greg Smith
Camp Black Bear
V.K.
Bosnia