Final answer:
In a 230V system, the equipment ground must be adjusted along with the wires to compensate for voltage drop and ensure electrical safety and proper functioning.
Step-by-step explanation:
In a 230V system, the wires are adjusted in size to compensate for voltage drop in a 500 foot run. In this case, the equipment ground, which is usually connected to the earth, must also be adjusted to ensure safety and proper functioning of the electrical system.
The function of the equipment ground is to provide a low-resistance path to the earth, which helps in diverting excess electrical current and preventing electrical shock. It ensures that the case of the appliance is at zero volts, which is necessary for electrical safety. Therefore, when adjusting wires in a 230V system, the equipment ground should also be appropriately sized and connected to maintain a safe electrical setup.