The single-phase connection allows for the relatively easy balancing of electrical loads via the network. The switchboard protects the electrical wiring system in your home. Electrical Work & Repair Costs. What do the different electrical wiring colours refer to in the UK? The most common time that people have to deal with their electrical wiring is when a fuse blows or circuit-breaker trips. Replace the fuse wire. Doing so may result in fire. To figure the minimum box size required by the National Electrical Code, add: 1 – for each hot and neutral wire entering the box 1 – for all the ground wires combined 1 – for all the cable clamps combined (if any) When buying a house, or if you notice any of the above warning signs, have a licensed electrician or electrical inspector check the internal wiring. The main difference between a circuit breaker and a fuse is that a circuit breaker can be reset; whereas once a fuse blows it must be replaced. The single-phase connection is formed of two wires, with the three-phase variety being formed of three or four wires. Information is entered by authorised people, including certifying gasfitters and electrical inspectors, or their delegates. However, caution should be taken as the wire can run at a very high heat. The switchboard protects the electrical wiring system in your home. In Australia, we currently have two separate colour coding systems, one for equipment wiring and one for installation wiring. The blue wire, also referred to as the neutral wire, has the function of transferring electricity away from the appliance. There are a number of different types of fuses. If you replace a fuse and it still blows, you should call a licensed worker. However, there is some wiring that homeowners can do themselves. What are some of the health and safety risks associated with my industry? some meter equipment suppliers offer training, contact them directly or through your electrical wholesaler; electrical industry training organisations; technical Institutes; online videos and instruction on electrical testing (relevant to AUS/NZ standards and regulations) Electrical Wiring Practice (Volume 1) McGraw Hill education. Each fuse or circuit breaker corresponds to a different area of wiring in your home. Do-it-yourself guide with professional techniques for a safe wiring job. The power to the corresponding area of the house will be shut off, to prevent overloading or fire. Plan wiring layout before construction commences so locations of all conduit, flush boxes, and so on have been determined. Make sure no excess wire is sticking out of the fuse carrier. In the 1870s, production of coal gas occurred in most large and many small towns. The current is generally indicated on the front of the fuse carrier. A single-phase connection will feature dual black or red live wiring and blue neutral wiring. Equipment wiring includes things such as wiring in power cords. AS/NZS 3000:2007 including Amendment 3 Electrical installations (known as the Australian/New Zealand Wiring Rules) AS/NZS 3123:2005 Approval and test specification - Plugs, socket-outlets and If yours is not, next time you have electrical work done, ask your licensed worker to do this for you. Find out more in our wiring colours guide. Always replace a fuse with the correct current rating. It is located at the end of the circuit for connection after the electricity has flowed around the live and earth wires. 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