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High Voltage Arc Resistance to Ignition (HVAR) - UL 746
The number of seconds that a material resists ignition when subjected to a high voltage low current arcing source.
Performance Level Categories (PLC) were introduced to avoid excessive implied precision and bias.
|Mean Time to Ignition (sec)||PLC|
|300 and longer||0|
|120 through 299||1|
|30 through 119||2|