Can you live on OT?

Hi all! I live in California and I really want to get into this industry. I’m currently in a well paying job and I know that an entry level EMT does not make much, but I’m hoping I can make up for it with OT because I have a family that depends on me.

My questions are:

How available is OT and is it consistent enough to rely on? How much OT do you currently work? How do 24-hr shifts work? Do you get paid even when you’re not on a call?

Thank you!