I did an inspection today on an older home that had a small guest house added to the back of the house that was detached from the main residence.
The wire that feeds to the subpanel is appears to be originally blue and looks to be discolored and brittle. I was unable to determine the case and I am assuming that it may have been from overheating? The hot lines are not colored black or red and the neutral is not colored white.
The subpanel is a Zylvania panel which I will write up on its own but the neutral and the grounding bus area shared and it is bonded to the panel and that also needs to be writing up correct?