In utility markings, which color indicates electrical lines?

• A. Red
• B. Blue
• C. Green
• D. Yellow

Answer: (A)

Colors used on utility markings convey what kind of buried line is present. Red is assigned to electric power lines, cables, and conduits. This convention helps crews immediately recognize a potentially dangerous electrical line before digging, prompting them to take proper precautions, verify with locates, and avoid strikes. The standard aligns with safety practices so workers can understand markings at a glance. For reference, blue typically marks potable water, green marks sewer or drainage, and yellow marks gas or petroleum lines, while orange often indicates communications cables. Some regions also use purple for reclaimed water or irrigation, but red remains the usual cue for electrical lines.