It was once here too G6, but today its been replaced by tiny thin silicone insulated stuff, at least in stoves. When I look at the gauge of the actual conductor I often wonder if it's the heating element!!!
, I fitted a new stove top and oven for a friend and the new oven (3600 watts ) had wire about 1 mm in conductor diameter, with tacky brass 6.3mm spade terminals at both the thermostat end, AND the element end.
To strip the white fibreglass cable I use a brand new GEM type razor blade ( the type with a steel back fitted ) and roll it along the bench. It doesn't take long to work out the correct "tension" so that the conductors are not damaged.
Joe