Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to discharge a capacitor [title] Learn and use proper techniques and equipment for working on live electrical equipment. [step] Don't let your unprotected hands near anything involved. [title] Disconnect the device with the capacitor from electric current.

Ending1: [step] Intact capactors are very likely to have an electrical discharge if the capacitor is not connected. [substeps] Inspect the capacitor before removing it from the circuit. Ending2: [title] Fix any problems while running a circuit. [step] When running an circuit, a capacitor does not supply current to the items in it. Ending3: [step] Alternating current will flow through a capacitor until the source of the current is removed. That current can add to the shock you'll get if you mishandle the capacitor, and may keep recharging it. Ending4: [title] Turn off all electricity to the device after removing the capacitor. [title] Attach and hold the capacitor at a 90 ° angle with an insulated insulation board.

Answer format: ending1/ending2/ending3/ending4