The upstream breaker is a five cycle ANSI type. The total clear time is eight cycles, which at 60 Hz equals 0.133 seconds. • The cable has copper conductors with thermoset insulation rated 90°C ...

History does not record the type of wire or insulation but I think I'm on safe ground to report the wire wasn't Tefzel. As a matter of fact, the first reliable sources I could find in the library ...

DUBLIN--(BUSINESS WIRE)--The "Global Switchgear Market (2019-2025): Market Forecast by Voltage, by Insulation, by Types, by Applications, by Regions, by Key Countries, and Competitive Landscape ...

It seems to works better with harder types of wire insulation, as the soft stuff tears instead of making a clean cut. The blue half of the handle in photos is metal, the black portions are plastic.

Both of these temperatures are far below the 90°C insulation rating of the conductors of listed Type NM-B Cable. For more detailed information, specifically on how the 2017 NEC deals with this ...