What designation color is used to indicate underground electrical lines are present?

The designation color that indicates the presence of underground electrical lines is red. This color coding is part of a national standard used to identify different types of utility lines in excavation contexts, ensuring safety during digging and construction activities.

Each color corresponds to a specific type of utility; red is specifically reserved for electrical lines, highlighting their presence and informing workers to take necessary precautions when digging in designated areas. Understanding these color designations is vital for avoiding accidents and ensuring the safety of workers and the public.