Which short course helped you get hired? - any advice?

I am considering a short certificate to improve my chances as an electrician's helper. I worked as an electrician's helper before this. I am unsure whether employers value it. Did a certificate help you get hired?

The workforce centre told me about training funds I qualified for. It covered most of my course.

Check a dozen job postings first. If most ask for the same certificate, it is probably worth it.