Hello Aspirant,

Both (fitter and electrician) are good jobs because both can pay well; however, both can also be physically demanding. There tends to be a shortage of fitter and electrician jobs at times. Since an electrical apprenticeship is often needed in the path to become an electrician, a fitter may save time and money in the short run. It is almost like instant gratification is granted in becoming a fitter.
Unlike the electrician path, math and physics may be less needed on the fitter path.

This may help.

Happy learning!