Single-Wire-Transformer-v8b2g.CIR is more realistic than Single-Wire-Transformer-v8b2f.CIR.
Single-Wire-Transformer-v8b2g.CIR takes 500 seconds to max out the simulator with "matrix is singular" error.
Single-Wire-Transformer-v8b2f.CIR takes 200 seconds to do the same, but is unrealistically lacking resistance.

https://www.inchcalculator.com/wire-gauge-size-and-resistance-calculator/