Learn the first day who the master, journeyman and apprentice electricians are.

In my experience your interaction with those levels will vary, i.e. know your place, ask before you do, don’t touch their shit (wire, tools, parts, anything). If you need help you don’t go to the apprentice, you ask a journeyman or master. You do not want a journeyman or master thinking you’re bossing around their apprentice.

Show up earlier than them, if possible. It’s already a given stigma that the low voltage guys like to come floating in later than everyone else with their “fancy” khaki pants. Fit in or they can make your time there miserable. Do what they say, respect their stuff and stay out of their way. You’re, in their mind, in a field that is kind of a joke, no formal training or certifications that mean anything.