Quick question on connecting this power supply

SilverStrings · 19th June 2010, 10:05 AM

Hi I bought this acopian linear power supply but Im confused as to which is the positive and negative for the AC input, I coulnt find any info of this on their site, I included picture of it below. thanks

EBM_dude · 19th June 2010, 10:24 AM

AC per definition has no positive or negative terminal... Or what dou you mean?

SilverStrings · 19th June 2010, 10:40 AM

Hi I meant hot and neutral. I have to connect an AC power cable to it I would like to know to which AC input the hot wire would go and to which the neutral would go on the power supply. Theres two on the power supply L AC and N AC

EBM_dude · 19th June 2010, 10:44 AM

It doesn't really matter, as soon as you plug in the plug turned around 180 degrees, you'll be off again. If you really want to do this, then take a screwdriver with a neon lamp inside (dunno what they'Re called in English) and test the socket. The wire that makes the lamp glow is L, the one that doesn't is N IIRC.

http://upload.wikimedia.org/wikipedi...ningzoeker.jpg
Phase testing thingie

AP2 · 10:53 AM

Quote:

Originally Posted by SilverStrings

Hi I meant hot and neutral. I have to connect an AC power cable to it I would like to know to which AC input the hot wire would go and to which the neutral would go on the power supply. Theres two on the power supply L AC and N AC

Hi,
N= Neutral
L= Phase
This is ac input.
what is the input voltage? (I think 110VAC)
DC voltage out? current output?

Regards

Mooly · 19th June 2010, 10:46 AM

And don't forget the mains safety ground... careless wiring on this could be dangerous as it's all open to touch.

Hot is Live or L ,and neutral is neutral

N

SilverStrings · 19th June 2010, 11:38 AM

so L=Live (hot) and N=neutral that makes sense lol. So if I were to put neutral in the L input and the hot in the N input what would happen? I imagine the fuse would just blow, not that I'm going to do it but I think it would be good to know.

Mooly I definitely wont forget to connect the ground .

AP2 · 11:55 AM

Quote:

Originally Posted by SilverStrings

so L=Live (hot) and N=neutral that makes sense lol. So if I were to put neutral in the L input and the hot in the N input what would happen? I imagine the fuse would just blow, not that I'm going to do it but I think it would be good to know.

Mooly I definitely wont forget to connect the ground .

Hi,
Not exist a psu with dedicate one pole at "L" or "N".
some industrial power supply dedicate line pole.(only for legislation)
not blow fuse if you connect this.

both lines input have necessary ISO to GND(ground)

Mooly · 19th June 2010, 04:19 PM

Quote:

Originally Posted by SilverStrings

so L=Live (hot) and N=neutral that makes sense lol. So if I were to put neutral in the L input and the hot in the N input what would happen? I imagine the fuse would just blow, not that I'm going to do it but I think it would be good to know.

Mooly I definitely wont forget to connect the ground .

It would work just the same if you swapped the L and N, however reversed polarity can be dangerous (on anything) for anyone working internally on the equipment.
Think about a table lamp with a single pole switch... if you reverse the polarity the lamp socket is always live, even though the lamp appears to function normally.

gootee · 19th June 2010, 05:04 PM

L = LINE (aka "Hot")
N = NEUTRAL

In the USA at least, LINE/Hot is the smaller of the two prongs on polarized AC wall plugs.

They wouldn't specify which was which if it didn't matter. Even if it only matters for legal purposes, there is possibly a good reason for it. So it's safer to not ignore it.

19th June 2010, 10:05 AM	#1
SilverStrings diyAudio Member Join Date: May 2010 Location: SoCal	Quick question on connecting this power supply Hi I bought this acopian linear power supply but Im confused as to which is the positive and negative for the AC input, I coulnt find any info of this on their site, I included picture of it below. thanks

19th June 2010, 10:46 AM	#6
Mooly diyAudio Moderator Join Date: Sep 2007	And don't forget the mains safety ground... careless wiring on this could be dangerous as it's all open to touch. Hot is Live or L ,and neutral is neutral N __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

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19th June 2010, 10:24 AM	#2
EBM_dude diyAudio Member Join Date: Aug 2009 Location: Germany	AC per definition has no positive or negative terminal... Or what dou you mean?

19th June 2010, 10:40 AM	#3
SilverStrings diyAudio Member Join Date: May 2010 Location: SoCal	Hi I meant hot and neutral. I have to connect an AC power cable to it I would like to know to which AC input the hot wire would go and to which the neutral would go on the power supply. Theres two on the power supply L AC and N AC

19th June 2010, 10:44 AM	#4
EBM_dude diyAudio Member Join Date: Aug 2009 Location: Germany	It doesn't really matter, as soon as you plug in the plug turned around 180 degrees, you'll be off again. If you really want to do this, then take a screwdriver with a neon lamp inside (dunno what they'Re called in English) and test the socket. The wire that makes the lamp glow is L, the one that doesn't is N IIRC. http://upload.wikimedia.org/wikipedi...ningzoeker.jpg Phase testing thingie

19th June 2010, 11:38 AM	#7
SilverStrings diyAudio Member Join Date: May 2010 Location: SoCal	so L=Live (hot) and N=neutral that makes sense lol. So if I were to put neutral in the L input and the hot in the N input what would happen? I imagine the fuse would just blow, not that I'm going to do it but I think it would be good to know. Mooly I definitely wont forget to connect the ground .

19th June 2010, 05:04 PM	#10
gootee diyAudio Member Join Date: Nov 2006 Location: Indiana Blog Entries: 1	L = LINE (aka "Hot") N = NEUTRAL In the USA at least, LINE/Hot is the smaller of the two prongs on polarized AC wall plugs. They wouldn't specify which was which if it didn't matter. Even if it only matters for legal purposes, there is possibly a good reason for it. So it's safer to not ignore it.