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Posted to alt.home.repair
Ross Mac
 
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Default Troubleshooting Electrical Outlet


"Keith Williams" wrote in message
T...
In article .com,
says...
Don Young wrote:
Troubleshooting with a digital voltmeter is also not a good idea; a
test lamp is much better.


Why isn't a multimeter a good idea? He's measuring volts, not current,
so it won't blow the meter.


Digital multimeters have a very high input impedance and can read
high values on open circuits because of the capacitive coupling
between wires. A test lamp is a low impedance device so any
capacitive coupling becomes insignificant. If you really need to
know what the voltage is, use both (load the circuit and read with
the meter).

A test lamp is a good idea. He could also pick up one of those outlet
testers for a few dollars.


A "three-light tester" should be in everyone's toolbox. Another
tool I've found to be quite valuable is a non-contact voltage
probe.

--
Keith


Hi Keith,

Good advice as usual....I am assuming you are the same Keith that posts over
at alt.engineering.electrical.
Hope you had a great Christmas season and all is well out here in Central
Florida....Mac