hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
Attached sketch i have panelboad breaker #1 feeding VFD 20HP rated. The 20HP vfd is feeding 50A fused disconnect at the 20HP motor 480V three phase.
My questions are as follows:
1. Which code section in NEC 2017 Article 430 would one use for sizing of Breaker #1, Cable #1, Cable #2, Cable #3? I understand their is part for power conversion 430 but I am confused as to what applies where
My questions are as follows:
1. Which code section in NEC 2017 Article 430 would one use for sizing of Breaker #1, Cable #1, Cable #2, Cable #3? I understand their is part for power conversion 430 but I am confused as to what applies where