hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
I have chagrining station site fed from 50A breaker 208V single phase. Due to voltage drop designer uses #6 phase conductors. However he is not sure if temperature termination if its 75C or 60C.
So in order to upsize the equipment grounding conductor if designer uses #6 then it comes to #4. However if terminal ratings are 75 then he has to use #8 in which case equipment grounding conductor would be #3.
Designer says he can use 60C Even though he does NOT know the temperature rating of terminal/equipment based on NEC 2014 section 110.15(C)(1)(a) and he does not need to upsize equipment grounding conductor.
Is the designer right or wrong?
So in order to upsize the equipment grounding conductor if designer uses #6 then it comes to #4. However if terminal ratings are 75 then he has to use #8 in which case equipment grounding conductor would be #3.
Designer says he can use 60C Even though he does NOT know the temperature rating of terminal/equipment based on NEC 2014 section 110.15(C)(1)(a) and he does not need to upsize equipment grounding conductor.
Is the designer right or wrong?