# Choice of wire diameter for doll's house?

I'm constructing a 1:12 scale doll's house and I'd like to use enamelled wire run within the walls for lighting. Each room would have its own circuit controlled through a switch and then to a common 12V supply.

Some of the lamps will be LED and some will use filament type bulbs (depending on what's available). Maximum number of lights per circuit would be something like 6 eg. 2 wall lamps, 2 ceiling lamps and perhaps a table lamp or two. They'll all be wired in parallel.

I chose solderable enamelled wire as it's single core and easy to solder to miniature fittings. There also won't be a problem with insulation shrinking back when soldering. The conductors will be lightly twisted, run in a 3mm channel cut into the MDF walls and 'back filled' with plaster.

Each circuit would be fused, perhaps 750mA? Maximum length of run might be 1 metre.

Could I get some ideas on what might be a suitable conductor size for this project? I already have some 24B&S 0.5mm dia. wire handy but can't seem to find consistent data regarding the current capacity (with information varying between 1.4A and 300mA). Something with a comfortable capacity of 1A or 1.5A maybe?

• if you use DC that will generate more heat - perhaps you'd care to explain what you mean by that. It's not true in general, and not true for lighting. Using LEDS is a good suggestion, but using AC for them is not, at least not without explaining exactly what you mean, and how you're going to overcome the low reverse LED breakdown voltage. Oct 21 '18 at 5:52