https://www.khanacademy.org/science/odia-class-10-physical-sciences/x28e877d8a7566183:in-in-magnetic-effects-of-electric-current/x28e877d8a7566183:domestic-circuits/v/live-wire-neutral-ground-earth-wire-domestic-circuits-part-1 2020-09-09T12:23:20Z Live wire, neutral & ground (earth wire) - Domestic circuits (part 1) The live wire of domestic circuits is usually red and is at high voltage. The neutral wire is black and has voltage close to that of the ground. The potential difference between these two wires in India is about 220 V. The earth or ground wire provides safety against faults and current leaks. Earth pin is longer to ensure earth connection happens first while connecting and last while disconnecting any devices. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Live wire, neutral & ground (earth wire) - Domestic circuits (part 1) The live wire of domestic circuits is usually red and is at high voltage. The neutral wire is black and has voltage close to that of the ground. The potential difference between these two wires in India is about 220 V. The earth or ground wire provides safety against faults and current leaks. Earth pin is longer to ensure earth connection happens first while connecting and last while disconnecting any devices. https://cdn.kastatic.org/ka-youtube-converted/pJYh4HgovaE.mp4/pJYh4HgovaE.mp4 675 Domestic circuits https://www.khanacademy.org/science/odia-class-10-physical-sciences/x28e877d8a7566183:in-in-magnetic-effects-of-electric-current/x28e877d8a7566183:domestic-circuits/v/domestic-circuit-connection-fuse-domestic-circuit-part-2 2020-09-09T12:23:23Z Domestic circuit connection & fuse - Domestic circuit (Part 2) Let's explore how the domestic circuits are connected (whether in series or parallel). Also, let's learn how the fuse helps protect the domestic circuits from voltage surges. This helps us explore why we have two separate circuits, one for low power devices (with 5A fuse) and one for high power devices (with 15 A fuse). Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Domestic circuit connection & fuse - Domestic circuit (Part 2) Let's explore how the domestic circuits are connected (whether in series or parallel). Also, let's learn how the fuse helps protect the domestic circuits from voltage surges. This helps us explore why we have two separate circuits, one for low power devices (with 5A fuse) and one for high power devices (with 15 A fuse). https://cdn.kastatic.org/ka-youtube-converted/W445X85Z17g.mp4/W445X85Z17g.mp4 815 Domestic circuits https://www.khanacademy.org/science/telangana-class-10-physical-sciencein/x1ac9c643dc8dffee:in-in-electricity/x1ac9c643dc8dffee:overload/v/overload-short-circuit-domestic-circuits-part-3 2020-09-09T12:23:24Z Overload & short circuit: Domestic circuits (Part 3) Overload happens when current exceeds a safe value. Sometimes this happens due to voltage spikes. Attaching too many devices is also a very common cause. Sometimes there is a short circuit. A short circuit is when a very low resistance path is created, causing enormous amounts of current. For example, when a live wire touches a neutral wire, it creates a short circuit. Overload protection and short circuit protection can be done by using an electric fuse. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Overload & short circuit: Domestic circuits (Part 3) Overload happens when current exceeds a safe value. Sometimes this happens due to voltage spikes. Attaching too many devices is also a very common cause. Sometimes there is a short circuit. A short circuit is when a very low resistance path is created, causing enormous amounts of current. For example, when a live wire touches a neutral wire, it creates a short circuit. Overload protection and short circuit protection can be done by using an electric fuse. https://cdn.kastatic.org/ka-youtube-converted/qVbBRppSpzE.mp4/qVbBRppSpzE.mp4 549 Domestic circuits