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You should be able to use the diode check feature, also known as continuity check - it's the yellow segment at around the 5 o'clock mark. It should make a buzzing sound if there's a low resistance, indicating continuity.
If you do want to use the resistance method, the 2M range is not a good idea - that will only measure for you in units of, I guess, 10 kiloohm. A considerable resistance would still show up as 0 ohm.
Better to use a lower range, probably 200 would be fine. I am not an electrician, but I would be worried if your house wiring had a resistance greater than 200 ohm!
hamrack
@hugo7
Question on multi meter and a slight cross post from the DIY thread.
I have 2 cables I am try to check which wire goes to the light switch and which is the main/live/
I need Ohms, right? So I select 2m Ohms on the multi meter.
If the circuit is complete (ie on the switched cable with the light switch on) then I should have a reading of ~0.00 Ohms.
Whereas if the circuit is incomplete (ie light switch off or main/live cable) I will see a reading of error, which in my case is shown as a 1. on the left hand side.
Right?
(all with electricity turned off at the mains Obvs)
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