davidbananas999
Member
- Location
- Minnesota
So ive heard so many times "dont question your journeyman or master giving you direction." "You dont get paid to think." blah blah blah.
Well im pretty sure the 65 year old been-wiring-my-whole-life master electrician in my company everyone looks up to is an idiot.
He was giving us apprentices a lesson today at work about unbalanced neutral loads while we stood looking at the 3 phase 208 panel in the restaurant we are wiring. It wouldnt be so bad if he was actually giving the right info to the others that dont know better.
65 year old idiot "whats the unbalanced neutral load if this very bottom single pole breaker is showing 18 amps with no other breakers turned on?"
Apprentices "18 amps."
Idiot "right, so whats the unbalanced neutral load if this breaker right across from it is also showing 18 amps?"
Apprentices "0!" (Ive stopped talking at this point)
Idiot "Right! So as long as you do a little work and split up your loads you can size your neutral wire pretty small!"
Ok so.....
2 breakers across from each other are on the same phase in a 3 phase panel. So they dont cancel each other out, by any means.
Second, its 3 phase... so even if they were on different phases, 18 amps on A and 18 amps on B leaves an unbalanced neutral load of 18 not 0.
Aaaand did I mention this panel is right next to the transformer we installed? Unbalanced neutral load has nothing to do with sizing the neutral in a SDS...Pretty sure this guy has no idea how neutrals work or how to size them.
Thanks for letting me rant. :rant:
Well im pretty sure the 65 year old been-wiring-my-whole-life master electrician in my company everyone looks up to is an idiot.
He was giving us apprentices a lesson today at work about unbalanced neutral loads while we stood looking at the 3 phase 208 panel in the restaurant we are wiring. It wouldnt be so bad if he was actually giving the right info to the others that dont know better.
65 year old idiot "whats the unbalanced neutral load if this very bottom single pole breaker is showing 18 amps with no other breakers turned on?"
Apprentices "18 amps."
Idiot "right, so whats the unbalanced neutral load if this breaker right across from it is also showing 18 amps?"
Apprentices "0!" (Ive stopped talking at this point)
Idiot "Right! So as long as you do a little work and split up your loads you can size your neutral wire pretty small!"
Ok so.....
2 breakers across from each other are on the same phase in a 3 phase panel. So they dont cancel each other out, by any means.
Second, its 3 phase... so even if they were on different phases, 18 amps on A and 18 amps on B leaves an unbalanced neutral load of 18 not 0.
Aaaand did I mention this panel is right next to the transformer we installed? Unbalanced neutral load has nothing to do with sizing the neutral in a SDS...Pretty sure this guy has no idea how neutrals work or how to size them.
Thanks for letting me rant. :rant: