Re: Opinions

["Paul" <someones-father-@xxxxxxxxxxx>]

Another question then. If you read the voltage across a zone at the panel,
without disconnecting it from the panel, and there is a fault on another
zone, does it effect the voltages on the rest of the panel. And will this
lead to a false result. Thats why I disconnect and test the resistance. At
least you know that there is nothing else that is going to influence the
results (unless there is some sort of earth loop I suppose)

Paul

"HoneywellTech" <seccon1@xxxxxxxxxxx> wrote in message
news:Mmlze.6313$x82.5971@xxxxxxxxxxx
> Exactly Paul,
>
> Since resistance drops voltage (from the control panel zone) the reading
> is
> equally reliable as pulling the loop and using a resistance check but the
> "Benefit" is that the tech does not have to remove the loop.
>
> When providing tech support in the past, it has amazed me that many long
> time Pros don't know that there is a voltage drop accross a Class B
> circuit.
>
> They must think that the panel sends water through there.
> ;^)
> "Paul" <someones-father-@xxxxxxxxxxx> wrote in message
> news:GJ4ze.17038$oJ.2732@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> Thats was my reasoning as well. Ive had a few techs say that its better
>> to
>> test the voltage while the zone is connected to the panel. My argument
>> was
>> also that as relating to Ohms law, resistance, voltage and current are
>> all
>> related and if one changes then there are changes elsewere. Ive been
>> servicing and fault finding for years using the testing of the circuit
>> and
>> checking the resistance method with great results, but im always willing
> to
>> listen to better methods.
>>
>> Paul
>>
>>
>> "Jackcsg" <nospam@xxxxxxxxxx> wrote in message
>> news:xNOdncvjB-RCuVHfRVn-gw@xxxxxxxxxxxxxxx
>> > Panels don't see resistance. They see voltage. The difference in
>> > resistance
>> > is what changes the value of the voltage, or simply put, the tolerances
>> > between the two determine the status of the loop (as the panel sees
>> > it -open/closed/short). There is no benefit, just another means of
> testing
>> > a
>> > circuit. Where it would make a difference is if you were hunting for a
>> > ground fault on a circuit.
>> >
>> > Jack
>> >
>> > "Paul" <someones-father-@xxxxxxxxxxx> wrote in message
>> > news:LJPye.16372$oJ.10172@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> >> What would be the benefit of testing the voltage across a zone of a
> panel
>> > to
>> >> ascertain whether or not the device is faulty, over testing the
>> >> resistance
>> >> of the circuit?
>> >>
>> >> Just curious.
>> >>
>> >> Paul
>> >>
>> >>
>> >
>> >
>>
>>
>
>