Under cabinet LEDs fed by low voltage

Surely voltage drop will be a major problem?

Bill

In message , at 20:49:42 on Sat, 26 Oct

Not sure why; the wiring currently in the walls is normal mains voltage lighting wiring, which I presume is good for several hundred watts at

Because in any cable, you lose more volts the longer the cable, so a few volts at 240v isn't an issue, but 1 volt when you start at 5v is 20% lost.

This is why mains power is transmitted at very high voltages (400,000v as an example)

In message , at 21:30:02 on Sat, 26 Oct 2013, Toby remarked:

I understand that, but what's the drop going to be in practice? The first link in the chain is about 3metres, and 1.5mm wiring has a drop of

The units say they run from 12v, so presumably have an internal regulator to reduce that (which will vary because of differing mains voltage input to the transformer supplied which claims to power up to five lights - so perhaps I'd need a different power unit) down to something suitable for the actual LEDs.

Anyway, assuming it does work from a Volt/Amp point of view, does anyone have recommendations for a pack of 10 (with daisy-chain, not star, supply) that they've used successfully?

R2CLED240-01

and google may help. It's a 2W LED mains powered surface mounted cabinet light.

In message , at 08:38:39 on Sun, 27 Oct

The internal PSU on those would solve the cosmetic issue. However, for 9 or 10, ~£180 is about three times what I was expecting to pay!

It takes me to a website "Fatal error: Call to undefined function anchor() in C:\Websites\ledgrouprobus.com.new\system\expressionengine\third_party\cat alogue\views\product-view.php on line 64"

Thats my fault. I saw a pack of 3 for 50 and had not realised your link was to a pack of 4 for 25 (I had a massive hangover this morning).

I did notice that the Robus site had a error. The ones I saw at 50 were on amazon.

You didn't say you were using LEDS. In the absence of clear information I assumed you were using conventional 10W 12V lamps.

Bill

In message , at 11:13:33 on Mon, 28 Oct

Not even in the title?

:-) And extending the cable by 3m using 1.5T&E will not be a problem. I'll try an have a look through a few of my catalogues later on to find some white ones for you. I am a bit busy at the moment