Final answer:
The color sprayed on the dirt or street surface to indicate the presence of an electrical cable is blue.
Step-by-step explanation:
The color that is sprayed on the dirt or street surface to indicate that there is a pipe or cable below carrying electricity is blue.
This is known as color coding and is used to differentiate between different types of wires or cables. In some regions, blue is specifically used to indicate the presence of an electrical cable.
It is important to note that color codes may vary in different parts of the world, so it is always best to consult the local electrical code or regulations to determine the specific color coding used in a particular area.