mckaype
Member
- Location
- Kenai, Alaska
In a Class 1 Div 2 location a motor (say 2 hp or greater) has failed and must be replaced. Options are: 1) Have a UL Motor shop rebuild the old motor. (Added benefit - we can re-install it easily since the flex and fittings already fit.) 2) Install a replacement motor. My question is about option # 2. Suppose the new replacement motor comes with P-Leads (thermal elements that will open a control circuit if the motor gets too hot). The original installation is old. The original motor has no P-Leads. There is no P-Lead control circuit at the motor. If we install the new motor with P-Leads - Does the NEC required us to utilize them? This would require bringing a control circuit from the MCC to the motor location. Our old motor was/is thermally protected in the MCC with OL elements. Thanks!