Toroidal small transformer LTspice model

I am new in this. Just learning, I found that a coil non isolated circuit for small current can produce 4 times more current than a two coils transformer with same inductance. I don't know if it is correct. The isolation is relative because a resistor blow out is less probable that get in conduction than a transformer in my opinion. Maybe simulation that i did fail in the model that i used, in length and section of core, despite i use inductance value length of pathway is not defined just LCR. I found the model in a page of a person called Bordonynov I am asking about any information to how I can do a model of a toroidal small transformer and how to associate it to a symbol. Also any information that can consider useful about this kind of simulation.

I did in another forum the same question, there can be seen screenshoots and have and zip files of simulations.

How to make model for toroidal transformer and associate it to a symbol - Q&A - LTspice - EngineerZone

Many thanks in advance.

@Bordodynov