Mike Dolt Enterprises
Mike Dolt Enterprises
User: anbm, Location: Fl
Asked on: Tuesday, April 19, 2011 at 1:00 pm EDT
Answered on: Tuesday, May 14, 2024 at 4:23 am EDT
Question: Will hospital canopy lighting (outside Emergency Department) should fed from Critical Branch or Life-Safety Branch circuit?I put on Critical branch circuit, contractor wonder if we can put on Life-Safety circuit can save some cost b/c the life-safety panel is closer. 517 doesn't say anything about this, I guess!Thanks!
Critical Branch Circuit
The hospital canopy lighting should be fed from the Critical Branch circuit, also known as the Essential Electrical System (EES). This is because: NEC 517.42(B) states that the EES shall supply "critical care areas of health care facilities." The canopy lighting outside the Emergency Department is critical for providing lighting and visibility during an emergency or power outage.
Life-Safety Branch Circuit
The Life-Safety Branch circuit is intended for systems essential for maintaining life safety, such as exit signs, smoke detectors, and fire alarms. Canopy lighting does not fall into this category.
Cost Considerations
While it may be more cost-effective to connect the canopy lighting to the Life-Safety panel, this is not allowed by code. The safety and functionality of the hospital during an emergency should be prioritized over cost savings.
Conclusion
The hospital canopy lighting outside the Emergency Department should be fed from the Critical Branch circuit to ensure compliance with NEC 517 and provide the necessary lighting and visibility during critical situations. Flag for review