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  1. ElectroChem

    Could someone decipher this wiring diagram for me? I bought 10-3 wire to run to it, looking to wire for 230V.

    No. Live to blue. Neutral / other live to yellow and black together. White, Red and Orange together in an insulated connector. Brown in its own insulated connector.
  2. ElectroChem

    Using Structural Frame as PE

    Oof, that's a bit of a gnarly one. Exerpt from AS3000 5.3.2 5.3.2.1.3 Other materials Materials other than copper or aluminium may be used as an earthing conductor. In such cases, the conductor resistance shall be not greater than that for a copper earthing conductor determined in accordance...
  3. ElectroChem

    Connecting pulse sensor to lower voltage DAQ

    There are definitely meters like that one that have an RS-485 interface. Ali-express is full of them, if you want reputable brands I'm sure an electrical supply store could advise you.
  4. ElectroChem

    Connecting pulse sensor to lower voltage DAQ

    I think those work at lower voltages like 3.3 or 5V yes? DIN meters like those are more often connected to PLC inputs that operate at 24V. I think it will likely work, but the lower voltage may not be enough to pass the transistor. Where are you looking at installing it? You've posted in the...
  5. ElectroChem

    Connecting pulse sensor to lower voltage DAQ

    As far as I can tell, that pulse output is an opto-coupled transistor, so it doesn't actually output any voltage itself. Rather, it switches a DC signal of your choice, with a max voltage of 27v and a max current of 24mA. The transistor junction is polarised, so it only works in one DC...
  6. ElectroChem

    Can a difference in phase voltages cause a motor to fail?

    Have we considered the possibility that the OP just had a bad pump? I would think absolutely nothing of slapping a 3-phase motor on a supply that tested as 415-416-422 line voltages. OP, any chance you were running the motor backwards? Submersible pumps can often still push water running the...
  7. ElectroChem

    Wagos on Final Ring Circuits

    For that one, I'll have to defer to my UK colleagues. Funny thing is, under Australian rules you'd be fine, we don't use ring final circuits so all final sub circuits are protected by an MCB/RCBO suited to the cable. Hence we can apply the full load at any point on the circuit without worries...
  8. ElectroChem

    Wagos on Final Ring Circuits

    Dude, we know how Wagos are constructed. You're clearly set on doing whatever job this is your own way, we're just telling you it doesn't comply with the regs as written, whatever sophistry you come up with.
  9. ElectroChem

    4 or 5 pin plugs for 3 phase supply from inverter?

    Here's this professional's advice, be your own judge of whether it's good or poor. Your reticence and demonstrated lack of subject knowledge mean you're not capable of doing this on your own. We've offered you all the help you could want, and you've thrown it in our teeth. Be off with you.
  10. ElectroChem

    4 or 5 pin plugs for 3 phase supply from inverter?

    I give up. In response to a specific request for more information we get a one line answer long on confidence and entirely lacking in detail. I'm no longer convinced the OP is even an electrician, given their initial open ended query about 'how do I choose between 4 and 5 pin plugs' and their...
  11. ElectroChem

    4 or 5 pin plugs for 3 phase supply from inverter?

    A motor inverter is not suitable for driving a DOL switched motor. The inrush current will at the least trip the inverter and likely damage it. So you're already looking at needing to modify the control circuit for your saw. We're still waiting on that block diagram James asked for. We're a...
  12. ElectroChem

    Bare 50Hz AC 3 Phase Bus bars...what is safe voltage to use

    Maybe they 'had a go'. Seen any reports in the UK news like "gallery handyman found dead"?
  13. ElectroChem

    Bare 50Hz AC 3 Phase Bus bars...what is safe voltage to use

    I'm thinking some kind of silly interactive 'modern art' exhibit. "Grab the busbars, it's perfectly safe!" No thanks, I've seen the autopsy reports from electrocutions.
  14. ElectroChem

    Do you really need insulated tools?

    We use insulated tools for the same reason we prove dead after isolation. Because "I thought it wasn't live" makes a shitty tombstone.
  15. ElectroChem

    Current being drawn on devices connected to power supply

    There definitely are. Have a look for the kill-a-watt style plug-in energy meters they can tell you how much current/power is being used by that socket.
  16. ElectroChem

    Will you be having the vaccine?

    That's... how vaccines work. Including the flu jab you so assiduously avoid. They don't pump you full of drug reservoirs ready to be released in an infection, they give your natural immune system a sneak peak of the virus so when the real deal shows up you can get right to fighting it without...
  17. ElectroChem

    Will you be having the vaccine?

    I'm undoubtedly writing from a privileged position on this topic, Australia managed to clamp down on the virus that shall remain nameless due to a fortuitous combination of secure borders, low population density and quick (and by many standards draconian) lock-downs. With a total of <30,000...
  18. ElectroChem

    Will you be having the vaccine?

    @Vortigern It's absolutely possible to have and express concerns about a proposed vaccine without being a card-carrying tinfoil hat aficionado. Unfortunately, what we usually see are comments along the lines of "I'm not anti-vaccine, but [insert dangerously uneducated BS here]."
  19. ElectroChem

    Adding a relay to detect when a switch tied to ground is open.

    My field is industrial automation, not auto electrics, so I'm chucking ideas into the breeze a bit here. I had another thought, do you have access to the actual door micro-switch? The wiring diagram shows it as a 3-terminal changeover switch. If you can get a third wire to it and swap the...
  20. ElectroChem

    Adding a relay to detect when a switch tied to ground is open.

    Couple of possibilities. You could use the door ajar switch to provide the 0V/gnd to a 12v relay, this would be held energised whenever the door is closed. Using a NC contact on this relay would then give you a light whenever the door is opened. This would introduce an extra static drain on the...

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