Simple circuit to check phase,neutral and ground

[Jitu Shah]

Dear all,
Good Day,
I wish to get simple electronic circuit in my extension board to incorporate so that when I plug in any device,its phase,neutral and ground wires connections are correct or wrong ,by LEDs mounted on extension board.
Thanks.

 

[rjenkinsgb]

The simplest is three separate LEDs circuits:
Each configured for the supply voltage (115 or 230V AC) using either an inverse diode across the LED or a bridge rectifier, then a series resistor or resistor and capacitor combination.

Connect one between live (phase) and neutral, one between live and ground, and the third between neutral and ground.

The first two should always be on, the third always off.

You can by numerous versions of "Mains checker" devices very cheaply - it may be simpler to remove the components from one of those and fit them in your extension?

eg.

Mains Socket Testers products for sale | eBay

Buy Mains Socket Testers products and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items

www.ebay.co.uk

 

[MacIntoshCZ]

its joke btw

 

[Jitu Shah]

Thank you for your suggested circuit/method of doing.Sorry for delayed response.
Jitu

 

[MaxHeadRoom78]

How about mains indicator neon's?

 

[Nigel Goodwin]

How about mains indicator neon's?

View attachment 131677

Bit 1920's

Problem with neons is they work off so little current they can give false readings via minute leakage etc.

But still useful devices, even today.

 

[Ramussons]

Dear all,
Good Day,
I wish to get simple electronic circuit in my extension board to incorporate so that when I plug in any device,its phase,neutral and ground wires connections are correct or wrong ,by LEDs mounted on extension board.
Thanks.

I don't think this is possible. Any such indication must be built into the device being plugged in.

 

[KeepItSimpleStupid]

This https://www.apc.com/shop/us/en/prod...r-Coax-and-Ethernet-Protection-120V/P-P11VNT3 surge suppressor outlet strip has a "wired correctly" LED

Atfer my experience with an APC surge suppressor with the indicator, not this one, I'm hesitant to purchase their surge supressor products. They are plastic and they have a thermal fuse protecting the suppression devices. The tarnsient gets absorbed by the connected load.

That's plain wrong.

 

[augustinetez]

This https://www.apc.com/shop/us/en/prod...r-Coax-and-Ethernet-Protection-120V/P-P11VNT3 surge suppressor outlet strip has a "wired correctly" LED

From the specs - "This LED informs users of potentially dangerous wiring problems in the wall circuit. " so it does not tell you anything about the wiring of stuff plugged in to the board.

 

[KeepItSimpleStupid]

so it does not tell you anything about the wiring of stuff plugged in to the board.

It's not a mind reader.