Cliff B
New member
- Location
- Bend Oregon
I am studying for my supervisors license and I have two math problems I would like help with.
1) Max primary overcurrent protection allowed for 2.8% impendance 500Kva 480 x 208/120 3phase transformer how do I slove for this?
2) The maximum ampacity rating of 4in x .5 in copper bus bar 4ft long installed in an auxiliary gutter I know it's 1000amp/inches squared but how do I set up the problem
1) Max primary overcurrent protection allowed for 2.8% impendance 500Kva 480 x 208/120 3phase transformer how do I slove for this?
2) The maximum ampacity rating of 4in x .5 in copper bus bar 4ft long installed in an auxiliary gutter I know it's 1000amp/inches squared but how do I set up the problem