Orange outlets mean that the ground is isolated and not connected to the outlet’s yoke or mounting strap to provide “clean” power. Indicated by the small green triangle on the outside of the outlet.
The outlets require a separate grounding pathway back to the electrical panel, which leads to less EMI (electromagnetic interference) or noise. Why should you be concerned about EMI / noise?
The main reason to be concerned about EMI is that in some electronic equipment EMI can cause data loss or errors. Making them ideal for lifesaving equipment where a power interruption could be very dangerous.
What orange electrical outlets are used for: – High-profile computer systems, hospitals, backup power View the website article for all uses.
Orange electrical outlets require a separate wire for grounding. This wire goes from the orange outlet back to the panel. View the website article for details.