Access over 120,000 technical material datasheets with Prospector! Create Your Free Account
High Amp Arc Ignition (HAI) - UL 746
The number of arc rupture exposures necessary to ignite a material when they are applied at a standard rate on the surface of the material.
Performance Level Categories (PLC) were introduced to avoid excessive implied precision and bias.
|HAI Mean Number of Arcs||PLC|
|120 and greater||0|
|60 through 119||1|
|30 through 59||2|
|15 through 29||3|