Cyclo's Case Build: iCharger 308DUO + TDK Lambda 24V 1500W PSU

[RedOctobyr]

FG is ground, yes.

L and N matter, they are not interchangeable.

L is "line", sometimes called the "hot" wire. Measured to ground, it will be 110V AC in the US, maybe 220V where you are?

N is "neutral". Measured to ground, it will show 0V.

Even without knowing the color scheme, you can identify them this way.

Sent using Tapatalk.

[maltokyo]

Thank you!

Out of curiosity, why do L and N matter? I don't understand, and googling isn't helping so far. On an AC power cable plug (without earth), you can plug it into the wall either way, right?

Originally Posted by RedOctobyr

FG is ground, yes.

L and N matter, they are not interchangeable.

L is "line", sometimes called the "hot" wire. Measured to ground, it will be 110V AC in the US, maybe 220V where you are?

N is "neutral". Measured to ground, it will show 0V.

Even without knowing the color scheme, you can identify them this way.

Sent using Tapatalk.

[pctomlin]

Originally Posted by maltokyo

Would love to confirm your A/C connection colors.. as maybe the colors here in Switzerland are different.

Into the FG terminals on the Lambda, you have "ground" or the earth wire, right? For me, that would be green or green and yellow. (Why are there two FG terminals on the Lambda?)

in the AC(N) and AL(L) terminals, as per the manual of the Lambda, you just have the normal AC power, so it wouldnt matter which I connect which to, right? Any differences between N and L for me, who doesnt really understand it?

Thank you!

It does matter on the AC power terminals. The (L) terminal or line is the positive voltage connection. The (N) terminal or neutral is the negative voltage connection. Line is normally the black wire and neutral is the white wire. Ground is typically green or a bare wire.

I would assume the two ground terminals are for the AC electrical circuit and the other for an actual ground rod.

[maltokyo]

Does AC power have positive and negative? I understand that it doesnt...

Originally Posted by pctomlin

It does matter on the AC power terminals. The (L) terminal or line is the positive voltage connection. The (N) terminal or neutral is the negative voltage connection. Line is normally the black wire and neutral is the white wire. Ground is typically green or a bare wire.

I would assume the two ground terminals are for the AC electrical circuit and the other for an actual ground rod.

[maltokyo]

I mean, these cables, have no -/+ right? as the power flow changes between them at 50 or 60 times a second, correct?
http://www.cablestogo.com/product-im...600/27399a.jpg

Sorry for stupid questions..

[RedOctobyr]

Correct, there is no + vs -.

For some things, like a light bulb, or any resistor, I don't think it makes any difference. Current flow is current flow, as far as a simple resistor is concerned.

But this is a complex device, which would use a 3-prong plug, which ensures it is always plugged in the same way. So the device can hopefully know which wire will be Line, and which will be Neutral, and perhaps uses each one differently.

Sorry, I wouldn't dare try to guess beyond that, I'm not an electrical engineer.

Short, non-answer: the manufacturer presumably labeled the L and N terminals for a reason. And *that* is why you have to connect them that way, because they said so

Actually, I just pulled up the manual. There is a note that "L" has an inline fuse, while "N" does not have that note. As "L" is the current/voltage source, this should ensure that the fuse can stop any incoming current, if there is a problem.

If you connected the "L" wire to the "N" terminal, instead of the "L" terminal, you would be supplying current on a terminal with no fuse. If something shorted or went wrong, and you got a short to Ground, for instance, the fuse would not protect you, as "N" (which is not fused, but is now your current/voltage source) would be shorted to Ground, and current would continue to flow.

[maltokyo]

Perfect. Tx!

[cyclo]

RedOktobyr is right... If you google "120 volt plug wiring" and select images you will see that black is hot, white is neutral and the lower middle (colored usually green) is ground.

One other thing I would add is if you will be parallel charging, you will need to use a thicker gauge outlet cable... Preferably 16 gauge or thicker. These are sometimes called subwoofer or power amplifier cables over here. The standard 18 gauge cable might not be enough especially at longer lengths.

EDIT: Added image on how the wiring in a typical 120V socket should be done:


Black is hot, White is neutral, and colored (blue, green, etc.) is ground.

Link to article where I found the image above: http://www.do-it-yourself-help.com/w...ceptacles.html