Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
1, 1 hour fire resistive circuit compliant with NFPA 130 & NEC
2. 2 hour fire resistive circuit compliant with NFPA 130 & NEC
What's the difference in wiring method? Vitalink, MI etc. will be 2 hour. Is EMT/RGS w/ THHN 1 hour?
2. 2 hour fire resistive circuit compliant with NFPA 130 & NEC
What's the difference in wiring method? Vitalink, MI etc. will be 2 hour. Is EMT/RGS w/ THHN 1 hour?