Al Pike
Member
- Location
- Honesdale, Pa
I'm adding a isolation transformer for a well house .The service is a 200a single phase 480/240 delta, because the utility was unable to provide 3 phase. A roto phase was added to provide 3 phase to the well pump vfd.The roto phase routes through a MTS with 150a fuses to the well house.The iso xfmr will be a 93kva on the load side before the well vfd. Can I use the MTS as a DS and keep the 150a fuses to protect the xfmr primary.?
93kva/480(193.75)/1.732(111.86) x 125%=139.83
150a fuses are ok.
Thanks for the help.
This is a poor design which I have no part in,and its to late to change it.
93kva/480(193.75)/1.732(111.86) x 125%=139.83
150a fuses are ok.
Thanks for the help.
This is a poor design which I have no part in,and its to late to change it.