I'll not bore everyone with the crazy details of my shop, but simply put, my space is shared. We have this giant air conditioner that was made by Chrysler in the late 50's or early 60's.. It's very large and about the size of a small car. Runs on 3 phase 208 power.. A few years back, we turned on the thing for the first time in the spring and we blew one of the main fuses coming into the box in the basement.. 100 amp fuse. We had an electritian out and he said that we were drawing too much amperage on one of the phases with everything else that is wired up in the space.. Today we blew another fuse and this time I replaced it. No big deal, but my question is, how do I determine how much amperage is being drawn from one of the phases and furthermore, how do you spread it out so that there is even draw across all the phases? Keep in mind, this is New York City we're talking about here.. Nothing is done to code, by law we have to use armored BX cable and electritians cost a small fortune.. If it's a matter of just replacing a fuse every few years, no problem. I can take care of that, but if possible, I'd like to fix it right.
-Markus