One I fight with is someone installing --part of a new service- then call for a service release. He says,"I only installed the cable from the meter up to the top of building" the rest is "existing" Existing, greatly overused!
Then, I look at the grounding sys. which I find, undersized, ground clamp badly corroded, conductor not secured, etc. Then I look for the ground rod, where I find it cut off by the lawn mower. The panel has missing k.o.'s, the mounting board falling off the wall, missing connectors on the cables entering the panel.
Meanwhile, behind me are 3 little kids, ages 4,5,6, with a metal rod curious "what would happen if"? all kids without shoes on.
Contractor argues that it is safe. Existing! Release for power or I will cry like a baby to someone in state gov.
Guys, If you touch part of a service, check it all for the above points. There is no such thing as a partial service entrance inspection. Old panels are ok, make sure to check for the above points. Old cable is ok, if it is not damaged or freyed. Install a ground rod and clamp a few inches below grade, leave a shovel load of dirt off to the side. A ground clamp is $2, install it. A ko seal is a $1, do you see a pattern here? A reinspection fee is??? Secure everything!!!! You will pass inspection for those old services. Remember, your family might be spending the night in that building. Bless those with safety, god workmanship.