In short, any older system is typically less safe than a newer system and most fuse systems are very old. Test the circuit breaker with a voltage tester to see if it’s faulty. Safety first! Cartridge fuses have these points at the ends of their body. Abbove this row of 4 fuses are two carriages side by side. (The battery may come with the meter). The outter two are clear. The voltage tester will indicate if the breaker is getting power. Replacement fuses cost a dollar or two; more advanced time-delay fuses allow for short surges before blowing but cost several dollars more. DO NOT use a new fuse with a higher rating - this could damage your home's wiring or cause a fire! 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. How to use the ohmmeter? We have no relationship with advertisers, products, or services discussed at this website. There are two basic types of cartridge fuses available, so it all depends on the age and size of the house. 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. Replace it with a new fuse of the same ampere rating (such as 10A, 15A, and so on) as the old fuse. The ohm meter can check fuses, old incandescent light bulbs, etc. It has a row of 4 edison screw type fuses. 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. Knowing how to test a circuit breaker can save on electricians’ fees. With glass fuses place the red test lead tip on the silver-colored end caps to check them. If there is no power to one fuse but all the others are functional, the problem lies with the fuse block itself. If the breaker is faulty, you’ll need to replace it. 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. I have an old fuse box that blew a fuse and I am not sure how to replace it. Insert the two test leads into the meter, and then turn the dial on the ohmmeter to ohms. 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). It will require a good battery. How to Work with Old Electrical Wiring: Repairing Old Electrical Wiring, Old Electrical Wiring Problems. Remove the fuse to test from the panel completely. They may be tested without removing them from the fuse holder. All fuses must have a way for electricity to enter and exit. 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