Insert the two test leads into the meter, and then turn the dial on the ohmmeter to ohms. How to use the ohmmeter? Replacement fuses cost a dollar or two; more advanced time-delay fuses allow for short surges before blowing but cost several dollars more. I have an old fuse box that blew a fuse and I am not sure how to replace it. Fuses 2 & 3 are “double taped” (two conductors from one fuse). (The battery may come with the meter). All fuses must have a way for electricity to enter and exit. It has a row of 4 edison screw type fuses. If the breaker is faulty, you’ll need to replace it. The middle 2 are red and say "time delay fuse 20Amp." Our parting word to you is this: If you’ve never had an electrical inspection done on your house–or haven’t in quite a while–please do so. You have to keep the electrical current […] Test the circuit breaker with a voltage tester to see if it’s faulty. Abbove this row of 4 fuses are two carriages side by side. The voltage tester will indicate if the breaker is getting power. Fuse box with four branch circuit fuses, range pull out on the right, main pull out on left. The list of improper modifications that can be made is very long. Placing the fuse or fuse in the fuse holder on a non-conductive surface, and touch a probe to each end. If there is no power to one fuse but all the others are functional, the problem lies with the fuse block itself. The outter two are clear. Smaller and newer buildings have the cylindrical fuse which has some sensitive links at its ends, wrapped with copper or any other type of conducting material. Safety first! The number of actual blown fuses in this country is becoming fewer and fewer as people continue to have their old fuse boxes replaced by new electrical panels 200-amp service, and circuit breakers. With glass fuses place the red test lead tip on the silver-colored end caps to check them. We have no relationship with advertisers, products, or services discussed at this website. They may be tested without removing them from the fuse holder. Replace it with a new fuse of the same ampere rating (such as 10A, 15A, and so on) as the old fuse. In short, any older system is typically less safe than a newer system and most fuse systems are very old. There are two basic types of cartridge fuses available, so it all depends on the age and size of the house. Double-check your ground connection if all the fuses read "0" volts to ground. POST a QUESTION or COMMENT about old house wiring, knob & tube, old fuse panels, old house wiring condition & safety InspectAPedia tolerates no conflicts of interest. Cartridge fuses have these points at the ends of their body. Remove the fuse to test from the panel completely. It will require a good battery. Knowing how to test a circuit breaker can save on electricians’ fees. Recognize the fact that a house with a fuse box has electrical components that are more than half a century old. Before you test the fuse, you need to know what it is about. DO NOT use a new fuse with a higher rating - this could damage your home's wiring or cause a fire! How to Work with Old Electrical Wiring: Repairing Old Electrical Wiring, Old Electrical Wiring Problems. The ohm meter can check fuses, old incandescent light bulbs, etc. I looked around for a hidden old fuse panel (there are still 1 or 2 in this house that serve small areas but they are downstream from breaker box). I Cant find a fuse box issue related to this issue. Delay fuse 20Amp. 20Amp. row of 4 fuses are two basic types of cartridge fuses have these at... To ground before you test the fuse, you need to replace it types of cartridge fuses,. For electricity to enter and exit holder on a non-conductive surface, and then the. 'S Wiring or cause a fire incandescent light bulbs, etc tester to see if ’! 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