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https://en.wikipedia.org/wiki/Mains_power_around_the_worldHow do I find out if the mains connector is unpolarized?
continuity test it a test carried out to check a continuity of a circuit , so what Do you want to test?
I think the easiest way to fixed it out is to use your multimeter to test the PD across the terminals sellect AC range then DC at your multimeter that will get you know if its AC or DC .from their you can use your tester screw driver to check for live wire.
It looks like the grey cable with the two black wires (and the green and yellow earth wire) comes from a C14 connector similar to the one on the right in the picture below. The picture shows which pin in the connector is live and which is neutral.I know that the blacks are neutral and live but I don't know which of them two are neutral or live?
Hey, Just bought a multimeter.
Not sure how to do the continuity test.
In the manual it says "connect the test leads across the circuit to be tested. If the resistance is less than 30 the buzzer will sound."
There were "L" and "N" markings (now covered by the red arrows) to confirm the polarity. The markings can be seen on this photo and others on the web. Finding the polarity info wasn't as easy as I expected. Any thoughts of simply downloading the relevant IEC standard evaporated when I found they charge a few hundred dollars for the privilege. :-(In the U.K. we have a three wire mains system. On the wall socket, the top-most receptacle is the Earth, the one beneath and to the right is the Line, and the third, on the left is the Neutral.
Based upon that, I would think that the diagram in post #27 is correct.
It looks like the grey cable with the two black wires (and the green and yellow earth wire) comes from a C14 connector similar to the one on the right in the picture below. The picture shows which pin in the connector is live and which is neutral.
Now you need to find out which black wire is connected to which pin.
That's a handy feature! Let's see if it works....
First test:
Just touch the two probes from the multimeter to each other. That should cause a buzz. You'll have to set the dial on the meter to the right setting first though. Hopefully the meter already has batteries in it.
2'nd test:
Touch the two probes to a piece of metal. The buzzer should sound again because the probes are now connected by the piece of metal. Any piece of plain unpainted metal should work e.g. a fork or knife.
Now to check the lead........
Touch one probe to the center (earth) pin of the C14 connector, and touch the other probe to the green/yellow wire at the other end of the cable. That should cause a buzz because the green/yellow wire is connected to the center (earth) pin.
If all of that works then there should be no problem sorting out the black wires. Touch one probe to the "live" pin in the connector and touch the other probe to first one black wire then the other. Whichever wire causes a buzz is the live wire, and the other wire is neutral.
To double check: The meter should also buzz if you touch one probe to the "neutral" pin and the other probe to the "neutral" wire.
Excellent! :smile:I did what you said and now I know that the cable marked as #1 is live and #2 is neutral
It looks OK, so long as it's secure and can't slip out.Can you just take a look at this picture and tell me if I put the ground wire correct?
That's not so good.But it doesn't look completely right like this either it feels like it could easily slip out.. I just don't know.
If they're what I think they are, you need a special crimping tool, which is something like a fancy pliers, to use them properly. The idea is to push the wire into the back of the blue (or red) thing, then squeeze the back of the blue thing with the crimping tool so that it holds the wire tight.I have no idea what the blue and red things are for.
I couldn't put the ground wire into them tightly at least.
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