<VV> Meters vs Test Lights

[FrankCB at aol.com]

Ken,
    That's why you have to measure the voltage DROP in  the wire going to the 
device with the device turned ON.  If the wire or  connection cannot supply 
enough amperage, the voltage will re reduced to the  point where it will be too 
low to allow the device to function properly.   So measure voltage at the 
device with it turned on.  If the voltage is  appreciably below 12 volts, then 
you have a problem in the line going to the  device OR possibly, in the ground 
connection FROM the device.
    Frank Burkhard
 
In a message dated 8/5/2008 8:54:36 AM Eastern Daylight Time,  
kenpepke at juno.com writes:

Meters  generally look for voltage ... the test light needs
wattage.  There  are many times a meter will see the
correct voltage yet the circuit may not  be able to supply
sufficient amperage.  In such cases the test light  will
be very dim if it glows at all.  In either case it will keep
a  person looking instead of making them think all is
well. 

Ken  P







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