Multimeter broken circuit is good to check the breakpoint is difficult to determine the problem
Multimeter electrician's preferred tool for troubleshooting, with the habit of encountering faults obviously can not use the multimeter, there is no table around the heart of the feeling of insubstantial, which is also one of the occupational habits, since the multimeter is the repair of electrician's tool, then we need to find a way to tap his potential to maximize, the following is a multimeter is not known to too many people to use the method of sharing, and hope to be able to read this! Article peers in the work can help, know this method of teacher can be completely ignored.
Wire breaks are also commonly known as open circuit, is one of the faults often encountered by electricians, the work is very common, with a multimeter is also very good to determine, take the multimeter resistance file to measure the first and last of a section of wire, through the good or bad immediately know, this into the line of electricians will, then the question comes, if a section of wire we use the multimeter to measure out it in the middle of the break, and we do not have any other measuring instrument at hand in the event that we should be How to accurately locate the location of the wire break? Can not be a section of the wire to cut through the search, so that the original significance of the troubleshooting has been lost, then only use the multimeter in the case, we can actually locate the location of the wire breakpoints as quickly as possible.
When we use the resistance file to determine a section of wire breakage, we first energize the wire, and then use the multimeter with a low voltage file, remember to only use the AC voltage measurement of the file, and to use the digital table, generally recommended to use the digital table of 20 volts of AC file, too big too small are not conducive to fault judgment, find a hand holding the black pen metal tip, red pen along the energized wire to move to look at the table screen of the number of changes if Move to a position, the table on the number becomes much smaller, or a sudden sharp change, then it can be determined that this point is the approximate location of the wire breakpoint, and then mark, power off after stripping the line, wiring, and then complete the troubleshooting.
Here it should be noted that for shielded wires or contain a metal shell within the package line, this method can not be used, there is also a digital table must be used with a brand-name table, for the picture in this multi-stranded wire intertwined together is not recommended to use this method.
