Just about a month ago, I walked from a job that was just like this, a neighborhood of condominiums has 120 volt street lighting fed from utility estimated disconnects with two 30 amp fuses, the circuit conductors are #12 thhn/thwn in black plastic irrigation pipe, no EGC's. I was asked to price adding a new 100 watt PS-MH for a sign to the existing system, 1st flag was they didn't want me to notify the utility to add the wattage into the estimated bill, when I saw there was no EGC and that the #12 was undersized not only for the 30 amp fuses and yes one of these fuses was in the neutral, the fact that some of the street light runs were over 1,000 feet. I told the HOA president that the only way I would do this work would be to bring the whole mess up to code or I would not touch it. well as bad as I need work, I walked and never heard from them again.
I don't care, if I discover a danger that can possibly hurt someone, especially children who might be playing around a pole like these, that is where I stop, not having an EGC to protect a pole from being energized is one of the most dangerous installs that was not uncommon to be done, many of the old school who thought just providing a ground rod would be enough, this was one of the most dangerous myths that could have ever been spread around.
I also contacted the inspector for that area to let him know that this was a life safety issue and he has the states blessing to write it up as such, and he ordered the POCO to disconnect the power to those street lights, of course I never was called again, but you know what? it doesn't matter to me, what does matter, is I don't have to worry about reading in the paper of a child being killed because one of those ballast went to ground but the fuse didn't open, and that would be something I would have to live the rest of my life remembering if I didn't do something about it.
Sorry for the rant, but we adults are the only protection many children have, and when we have the knowledge to prevent such a hazard we should do all that we can to prevent this from happening, a dangerous installation such as this is a "Life Safety Hazard" and is addressable in almost all states by law, and a building official has the right to have the power cut when it threatens the life of the public.