If your water heater is making strange noises, or you see jolts of fire on the electric board or any other situation that you think might cause a hazard, wear a plastic slipper and take a wooden or a plastic spatula to pull the plug off from socket.  Turn off the switch if you can and call the electrician for help. NOTE: If you see fire on the socket, do not approach it. Instead, turn off the main switch in your house. Then call the electrician and fire brigade for assistance.