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Author Topic: lead extension  (Read 2637 times)

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pauls

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lead extension
« on: 03 March 2016, 22:25:49 »
Whats the safest way to extend one of the leads on my multi meter. I think it will need to be about 3ft longer.
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Andy B

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Re: lead extension
« Reply #1 on: 03 March 2016, 22:51:14 »
I have a wire with a croc clip on one end & a female spade connect the other - stick the probe into the female connector & croc clip generally to 'earth'
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pauls

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Re: lead extension
« Reply #2 on: 03 March 2016, 22:57:42 »
Thats what i was thinking but what size wire.
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Andy B

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Re: lead extension
« Reply #3 on: 03 March 2016, 23:00:54 »
Quote from: pauls on 03 March 2016, 22:57:42
Thats what i was thinking but what size wire.

about 3 ft  ::) ::)
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Andy B

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Re: lead extension
« Reply #4 on: 03 March 2016, 23:02:38 »
I'm sure there's a resistance issue, but most of the time you're just looking for continuity or 12 volts so it won't really matter
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pauls

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Re: lead extension
« Reply #5 on: 03 March 2016, 23:05:55 »
Thanks for that  :y
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Andy B

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Re: lead extension
« Reply #6 on: 03 March 2016, 23:08:11 »
Quote from: pauls on 03 March 2016, 23:05:55
Thanks for that  :y

If it looks right, it'll probably be OK.
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zirk

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Re: lead extension
« Reply #7 on: 04 March 2016, 02:06:02 »
Quote from: Andy B on 03 March 2016, 23:02:38
I'm sure there's a resistance issue, but most of the time you're just looking for continuity or 12 volts so it won't really matter
Only really an issue if your measuring current or have the need to measure accurate resistance which is unlikely for Car use, as you say Andy measuring Voltage shouldn't be an issue as the meter is very high impedance on voltage range.

Personally if I need  longer leads on the meter, I just move the meter closer to the job and use a jump lead on the Negative back to the battery or Earth point.  ;)
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omega2018

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Re: lead extension
« Reply #8 on: 04 March 2016, 02:54:58 »
Quote from: pauls on 03 March 2016, 22:57:42
Thats what i was thinking but what size wire.
what's the maximum current your multimeter will read before it blows its internal fuse?  probably 10amp unless it is an expensive one
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Marks DTM Calib

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Re: lead extension
« Reply #9 on: 04 March 2016, 12:41:55 »
Let me know what you need as I have a test lead making kit (it fell out of work when they were closing it) with the correct connections and super flexi test lead wire
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the alarming man

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Re: lead extension
« Reply #10 on: 04 March 2016, 21:31:16 »
also you can buy different length leads and tbh not that expensive
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Andy H

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Re: lead extension
« Reply #11 on: 04 March 2016, 22:19:34 »
Nobody has asked what voltage is being measured - if 12v (or 24v on a truck) then all the advice so far has been good.

If there is a chance of making a connection to anything with a higher voltage then don't mess about with crocodile clips.....
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Andy B

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Re: lead extension
« Reply #12 on: 04 March 2016, 22:20:29 »
Quote from: Andy H on 04 March 2016, 22:19:34
Nobody has asked what voltage is being measured ......

good point well made!  :y :y
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STEMO

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Re: lead extension
« Reply #13 on: 04 March 2016, 22:24:53 »
What voltage is being measured?
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pauls

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Re: lead extension
« Reply #14 on: 04 March 2016, 22:52:56 »
Sorry forgot to mention on this thread.. iam trying to test the continuity from my bank 1 02 sensor plug to the plug pins at thd ecu end.
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