When a fuse detects too much power running through a wire, a tiny piece of metal inside the fuse will break, thereby stopping the power from continuing to run through the wire and to the electrical outlet. When the top of the fuse is made of glass, many people think that they can look at the metal piece Inside and see if it is broken. THIS IS NOT ALWAYS TRUE. The best way to handle a suspected blown fuse is to simply replace it. If the power comes back on,great! If it doesn’t, then contact us, we love to troubleshoot. Screw - in fuses follow there name and screw in like light bulbs. Most screw in fuses have a glass on the top and metal threads on the bottom. When a fuse blows, its internal metal strip breaks and the window becomes discolored. Be sure to replace a fuse with the exact same amperage rated fuse as was previously used to maintain safety standards as well as protect your electrical appliances. By doing so, you can protect yourself and your family and maintain a safe household. 15 and 20 ampere fuses are the most common size. Some fuses may have smaller screw-in bases and are called type-s fuses. Threads vary in size so they won’t be accidentally replaced by another type of fuse which can very likely cause fire hazards. When installing a fuse make sure to screw it in tight, giving it an extra ¼ turn to make a electrical connection. Other fuses are rated as time delay, because they take a little longer to blow and are designed to withstand short, extra surges of power, that can pose a danger to the electrical system. When two electrical wires accidentally touch, a short circuits occurs. Short circuits immediately causes a circuit to trip or a fuse to blow. To fix a short circuit, a little deductive reasoning is required, first ask yourself, What happened just prior to the short. Was something plugged in, turned on a light. This should clarify the reason for the short. If you just plugged in an appliance, simply unplug the appliance and then replace the fuse or reset the circuit breaker. If the electricity comes back on, then the electricity system is fine and its the appliance that is faulty. If this does not fix the issue then contact us.