Hydrogen
For Hydrogen, classification system is NEC 500 (North America); apparatus / gas group is B; ignition temperature (c) is 520; ignition temperature (f) is 968, recorded from its source on 2026-08-06.
- Substance
- Hydrogen verified
- Classification system
- NEC 500 (North America) our reading
- Apparatus / gas group
- B verified
- Ignition temperature (C)
- 520 verified
- Ignition temperature (F)
- 968 verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
Hydrogen | B | 520 | 968 | 6,000 PSI | IIC
— ldpi-inc.com, retrieved 2026-08-06
Source
- ldpi-inc.comhttps://ldpi-inc.com/resources/classification-codes/class-1-locations/