Can I use the input neutral for the output

OwenM

Power supply - Can I use the input neutral for the output?

I need a 12v dc supply for some cooling fans and other components - I'm considering this:

https://www.amazon.co.uk/gp/product/B09YXZ45G6/ref%3Dox_sc_saved_image_3?smid=A1GW00CD1G1YON&psc=1

and the diagram shows me the 220v input on the right - that makes sense. It then has +12vdc and -12vdc - ok, so I assume I use +12vdc but for neutral can I connect it to the input neutral?

wiz569

Would the neutral output not just connect to the -12vdc?

meercat

https://www.boards.ie/discussion/2058264093/can-i-use-the-input-neutral-for-the-output

V+

V-

theyre the 2 outputs that’ll give you 12v

TheChizler

What do you mean "but for neutral can I connect it to the input neutral". What is the connection I've put in italics, what are you connecting to? Are you possibly mixing up the terms negative and neutral?

Neutral is a term used for one of the wires in a mains connection, there should be no crossover from the extra-low voltage side to the Live or Neutral on the mains side.

"It then has +12vdc and -12vdc - ok,"

It has a +V and -V, and the absolute difference between them is 12V. You should connect the +V to the positive wire in your application and -V to the negative to give you a 12V supply.

This output will be floating with respect to earth, meaning the difference between the +/-V connectors and ground can be quite high, easily a couple of hundred V. Depending on the application you might tie one of these to ground, so for you you could connect the application negative to its own ground, or the ground connector on the supply (not the neutral).

Make sure the ground connector is connected to a plug with a ground terminal, and the cover is on whenever it's plugged in. This type of supply should really be housed in some other box where it can't be easily touched. Never touch it when it's plugged in.

10-10-20

Do not connect Neutral to negative, and don't confuse the two.

If this product was miswired or the plug pins reversed, then the neutral becomes 220v live and you have a serious scenario on your hands.

mickward

AC In is from your plug, your mains supply.

DC output has 3 AC Lives labelled "V+" and 3 AC Neutrals labelled "V-".

DO not connect DC neutral to the AC "N" terminal or very bad things will happen.