T4A
For T4A, category is temperature code; maximum surface temperature (c) is 120; basis or note is Ignition temperature of gas / dust >120-135, recorded from its source on 2026-08-06.
- Category
- temperature code our reading
- North American designation
- T4A verified
- Maximum surface temperature (C)
- 120 verified
- Basis or note
- Ignition temperature of gas / dust >120-135
- Maximum surface temperature (F)
- 248 per ldpi-inc.com
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
120 | T4A | >120-135
— e2s.com, retrieved 2026-08-06
What ldpi-inc.com says
T4A | | 120 | 248
— ldpi-inc.com, retrieved 2026-08-06
Sources
- e2s.comhttps://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups
- ldpi-inc.comhttps://ldpi-inc.com/resources/classification-codes/class-1-locations/