IMHO rank green apprentices should never be inducted into Service Work.
1) It's absolutely necessary for Service troopers to know how New Construction techniques threw the wire into the building. The more they know along this line, the more efficient they are in doping out what went wrong, how to extend circuits, just about everything.
2) A rank, green apprentice gets over-loaded with information// styles// methods -- and actually loses track of what goes with what. This damages his morale. It may lead to his lead-man chewing him out too often -- demoralizing him to the point of quitting our trade.
3) Repetition leads to muscle memory -- as in how to property make-up branch conductors -- in a highly professional manner. Apprentices need this skill. End users// customers may not know diddly about field wiring, but they sure can spot unprofessional make-up. It looks exactly how they, themselves, can perform it.
"Why are they paying big bucks to have a pro install wiring that looks the same as if they, themselves, roped it in" ? That's the question that runs through their minds.
One thing about the IBEW's craft skill minimums: no civilian can look at such work and say... "Yeah, I could do that."
Instead, they think, "The Terminator performed that work."