Extension box has weak ground connection
Extension box has weak ground connection
I feel electric shock whenever I touch parts of my CPU cabinet, its side panel, rear panel, or the screws. When I connect a phone via USB, I sense shock through the metal frame of my phone. The same occurs with my pendrive when plugged into the USB port—its metal outer cover causes a shock upon contact. Likewise, electric shock appears on the metal surfaces of my printer. My CPU and printer are connected through an extension box. I don’t notice any shock if they’re directly plugged into the wall. It seems the extension box might not be properly grounded. Is there a way to fix the box so it works correctly? Is the repair easy enough for me to handle myself?
Begin with your power strip and check if it has three wires connected to the socket ends. If there are only two, the strip lacks an earthing wire. Then examine the wall outlet; if it has three wires, one should be a yellow sheathed wire with a green line or a copper wire, which is the ground wire. To confirm proper grounding, contact a certified electrician to inspect your home's wiring. Sometimes the grounding wire from the outlet doesn't reach the SDB or MDB.
Begin with your power strip to confirm it has three wires connected to the socket ends. If it lacks three wires but only two, the strip doesn’t have an earthing wire. Check the wall outlet next; if it has three wires, one should be a yellow sheathed wire with a green line or a copper wire, which is the ground wire. To verify proper grounding, contact a certified electrician to inspect your home’s wiring. Sometimes the grounding wire from the outlet doesn’t reach the SDB or MDB.