We recommend that you use an electrician registered with one of the government-approved schemes Find an electrician

The rating of fuse fitted within a plug depends on the power rating of the device to which it is attached. The fuse must be compatible with currents slightly higher than those used to operate the device. When a fuse blows, the electrical supply to a particular circuit is immediately cut off. This lowers the risk of fire and prevents damage to the wiring. The blown fuse can safely be replaced without the risk of electrocution. Are Old Fuse Boxes Illegal? Let’s face it, once you’ve mapped your home’s circuit breakers, you’ll close the panel door and not open it for a long time (unless you run into problems). Resettable SMD fuses, by contrast, can be used multiple times. They function in a similar way to resettable thermal fuses and are available in multiple sizes and capacities. Striker FusesYou can use Ohm's Law to calculate the required rating for a fuse. Divide the power of the attached device (measured in watts) by the voltage of the power supply. If the result is a fraction, round this up or down. Note that your home might have more than one panel. Sometimes, there’s also a “sub-panel” that controls various circuits in a different area. We have a sub-panel with breakers for kitchen appliances about 20 feet away from the main panel. (Don’t worry about looking for a sub-panel.) 4. Enlist Help No, completely avoiding filling out anything at all on three-phase commercial final DBOs so no-one has a clue what feeds (or isolates) what !

Panels can commonly have breakers or fuses that don’t seem to power anything, especially in old houses. We have a few of those in our house. Consider labeling these mystery breakers as “Spare” or “Unknown” so you know that you tested them and were unsuccessful at identifying their route. And mark these using pencil (versus pen) so that if you do find out where it connects, you can erase and make changes. 8. Mount Directory & House Floor Plan Describe every detail: Label each wire with a clear and informative label that provides information such as the circuit name, voltage, and any other relevant traits. For example, if an electric drill requiring a new fuse has a 700-watt rating, divide this by 230 (the standard UK mains voltage). The result is 3.04, so you will require a 3A amp fuse for the plug. Where Would a Type D Fuse Be Installed? Obtain the tools you will need - typically fuse wire, wire cutters, a screwdriver and a torch so you can see what you are doing Any small electronics that are easy to identify when turned on and off – meaning bright lights or noises – will do for this exercise, such as:Now you have a map that correlates fixtures, switches and outlets with breaker or fuse number. Note everything that’s on the circuit and transfer your findings to the directory or the individual circuit. BS EN 60073:2002. Basic and safety principles for man-machine interface, marking and identification. Coding principles for indicators and actuators. Fuse boxes have a number of alternative names, including control board panels, distribution boards, breaker panels, fuse boards, and fuse panels. Domestic fuse boxes are frequently referred to as consumer units. What is a Switch Fuse Unit? But honestly, as the average homeowner, I don’t think it’s essential for me to dive deeper into my home’s electrical systems. Instead, as a responsible homeowner my job is to go through this mapping process and adequately label my electric service panel. 7. Create the Label a Home Electrical Panel Directory B) Residual Current Devices (RCD) these are switches that trip a circuit under dangerous conditions, and instantly disconnect the electricity.