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INNOVA 3320 Auto-Ranging Digital Multimeter with Battery Load Test $37.89 + Delivery ($0 with Prime/ $39 Spend) @ Amazon AU

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When people actually find out how bad an electrician I am, they're truly shocked!

Current targetted offer for a potential $5 off:

$5 off $15 Spend on Products Sold by Amazon AU & Delivered to Amazon Pickup Location @ Amazon AU

Top Tip Tuesday:
We’re all wired differently but remember to be positive no matter watt.

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closed Comments

  • +3

    Truly shocked you missed out on the $5 ones

    • +16

      Ohm that hertz.

    • +2

      Is this current deal worth 10 times more?

    • +1

      It is still available, you just need to buy it with 2 other items on mobile to checkout.

  • +1

    Ammeter description:
    10A/15sec max each 15min unfused

    How normal is this? I often leave ammeters in place for a lot longer, but rarely dealing with anything above 3A. I assume temperature of the cable plugs and/or PCB traces are the likely limiting factor here. Do premium multimeters have better current handling than this on their plugs or is this kind of time limit something I should generally expect from multimeter ammeters (at or around 10A)?

    • +1

      You are better off with a clamp meter for that sort of use, dont have to put your ammeter in series with the circuit then.

    • +2

      How normal is this?

      Not normal. "Premium" multimeters, and most ordinary multimeters, can maintain 10A current indefinitely.

      This multimeter says "unfused" on the current input, and that's a big warning sign of "we couldn't be bothered to add a 30-cent fuse to improve safety". Maybe in a $5 multimeter that would be understandable from an economic standpoint, but in a $40 multimeter it's not.

      So as they cheaped out on protective features, it's hardly surprising they cheaped out on the current shunt used when measuring current. Hopefully it will fail in a way that doesn't start a fire.

      You may think a fuse is unimportant, but think of what happens if you accidentally leave the multimeter leads plugged into the current socket, and try to measure the voltage on your car battery, which delivers about 1000A when starting your car. Something will blow, and I'd rather it be a fuse than having the multimeter leads go red hot and melt, possibly burning me in the process. Maybe the multimeter will blow before the leads, but you have no way of knowing which will blow first.

      It will be even worse if you are measuring mains voltage in your home, and carelessly leave the leads plugged into the current sockets. Your RCD/ELCB won't protect you when measuring between live and neutral, and the "short" presented by the multimeter won't draw a high-enough current for long enough to blow the overcurrent circuit breaker. But the wires in the leads will get red-hot in a second or so, melt through the insulation, and you'll be hanging on to live wires. Unless the multimeter breaks the short before the leads get that hot, which is why you should insist on multimeters with fuses on ALL current inputs.

      • +1

        Wont have to worry
        The meter will blow up before the leads melt lol

  • +1

    might as well get a little bit better one (thats fused) https://www.amazon.com.au/dp/B07SHLS639/ref=sspa_dk_detail_6…

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