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Troubleshooting tools The marine environment can be especially harsh on the components of your boat’s electrical system. When trouble occurs you will want the capability to make accurate and reliable measurements quickly. The basic tool for this job is a Fluke digital multimeter. Work safety The voltages and currents present in electrical power systems can cause serious injury or death by electrocution. Consequently, when testing or troubleshooting, carefully adhere to all industry standard safety rules that apply to the situation. Read and follow directions and safety warnings provided by the equipment manufacturer. Fluke cannot anticipate all possible precautions that you must take when performing the test described in this application note. At a minimum, however, you should: • Be sure that all power has been turned off, locked out, and tagged in any situation where you will be in direct physical contact with live circuit components - and be certain that the power can not be turned on by anyone but you. Batteries Often the first sign of a battery problem will occur when the starter won’t turn the engine over. Use your multimeter to get a rough idea of the battery’s state of charge. Alternators A Digital Multimeter’s accuracy and display make regulator/alternator diagnosing and adjusting easy. First determine if the system has an inte- gral (internal) regulator, then whether it’s type A or B*. Alternator leakage current To check alternator diode leakage, connect the multimeter in series with the alternator output terminal when the engine is not running. Condenser, Spark plug wires, Fluke Multimeters for Marine Applications.

Tags : fluke digital multimeter, fluke multimeters, spark plug wires, death by electrocution, electrical power systems, internal regulator, circuit components, alternator output, battery problem, safety warnings, troubleshooting tools, work safety, marine applications, rough idea, s type
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