Low voltage dimming

La Poste · Apr 25, 2012

Greetings.

Apologies if this is a stupid question.

Say you wanted to install some garden lights and you decided on 12 Volt lighting because there were kids around etc.

Now say you wanted to dim them and you wanted a dimmer that was close to the lights IE outside.

Would it be possible to dim the low voltage side of the transformer or is this a big no no?
What would be the consequences of trying this?

Just curious.

Thanks a lot.

Bright Sparks · Apr 26, 2012

Why would you want to put the dimmer outside? It is unlikely to be IP rated. Dimmable transformers work by dimming the main supply into the Transformer not by dimming the LV output.

Get an electrician in as it is likely to be unsafe and just as much danger to the kids.

Smudge · Apr 26, 2012

Bright Sparks said:
Why would you want to put the dimmer outside? It is unlikely to be IP rated. Dimmable transformers work by dimming the main supply into the Transformer not by dimming the LV output.

Get an electrician in as it is likely to be unsafe and just as much danger to the kids.

I have just installed low voltage led ribbon, (slightly different to OP) and that was dimmed on the low voltage output. Done to manufacturers instruction, so suppose it depends on type of lights.

Agree you will find it difficult to find an IP rated dimmer, maybe not. Can the dimmer not be put by the back door? or window/patio door or whatever the layout to outside is?

Bright Sparks · Apr 26, 2012

Smudge said:
I have just installed low voltage led ribbon, (slightly different to OP) and that was dimmed on the low voltage output. Done to manufacturers instruction, so suppose it depends on type of lights.

Agree you will find it difficult to find an IP rated dimmer, maybe not. Can the dimmer not be put by the back door? or window/patio door or whatever the layout to outside is?

Have seen them before, they work on a 1-10v signal generated by the dimming control. Never seen them as yet on a Transformer for Halogen.