Yes, the hydrogen emission seemed to be very small for the size of the Cabin (8x20x9.5). But we have a 9Kva UPS and about 15 backup batteries (60min backup required). So with that many batteries it became more of a concern than having just 1 or 2. The cabin IS a manned space, at all times. Thus...
Hello All:
I have a control cabin in a NEC 505 Class 1 Zone 2 Area.
The cabin is Type Z purged per NFPA 496
Upon loss of purge i can still run equipment, i just have to monitor the environment.
If i lose purge i am likely now on UPS battery power.
The question is, if the VRLA's are inside the...
