TP-Link TL-SF1024D User Guide - Page 12

3.3 Connect to Ground Connecting the Switch to ground is to quickly release the lightning over-voltage and over-current of the Switch, which is also a necessary measure to protect the body from electric shock. In different environments, the Switch may be grounded differently. The following will instruct you to connect the Switch to the ground in two ways, connecting to the Grounding Bar or connecting to the Ground via the power cord. Please connect the Switch to ground in the optimum way according to your specific operation environment. • Connecting to the Grounding Bar If the Switch is installed in the Equipment Room, where a Grounding Bar is available, you are recommended to connect the Switch to the Grounding Bar as shown in the following figure. Figure 3-4 Note: The Grounding Bar and Ground Cable is not provided with our product. • Connecting to the Ground via the power supply If the Switch is installed in the normal environment, the Switch can be grounded via the PE（Protecting Earth）cable of the AC power supply as shown in the following figure. 8