Please read: This notice contains important safety warnings and other safe usage/installation information about the 12v wired lighting products we stock. We urge you to read this notice carefully and ensure you understand it before purchasing, installing, or using any of our 12v electrical products.
Our 12v wired lighting products are first and foremost a hobby product for adult miniaturists, designed to bring life and light to your dolls houses and 1:12 scale models. They do not run at the same voltage and are not manufactured to the same specifications as regular household lighting or electrical products. They are not designed to be used for long periods of time and should not be used as a supplementary source of lighting in your home.
MISUSE OF THESE PRODUCTS OR FAILURE TO FOLLOW THE SAFETY INSTRUCTIONS AND WARNINGS IN THIS SAFETY NOTICE COULD RESULT IN FIRE, ELECTRIC SHOCK, OR OTHER SERIOUS INJURY OR DAMAGE
Transformers and Bulb Capacity
Installation & Usage
*We are aware that some other dolls house brands and distributors continue to use 2-amp fuses in their socket strips. While this has been deemed safe practice by most manufacturers of these products, we would strongly urge you to consider switching these fuses out for a lower amp fast-blow fuse to ensure maximum safety when lighting your dolls houses and other scale models.
We have 1.5amp fast-blow fuses available to purchase in 2 sizes which are compatible with most 12v terminal strips.
A round wire system comprises a central 'hub' - a terminal strip (LT9017 pictured) with sockets, a fuse (max 1.6amp fast fuse), and an on-off switch - which connects to a 12v transformer(LT9073 pictured) that is plugged into a mains socket. A 12v light with filament bulb is then plugged into this socket strip, either directly or via extension sockets (LT9013 & LT9015 pictured).
The transformer should be sized according to the number of bulbs being fitted (NOT by the number of light fittings). It is perfectly acceptable to use a higher rated transformer than required (though a voltage regulator is recommended if you are using less than about 5 bulbs in total), but do not exceed the recommended rating on a transformer by adding more bulbs than specified. Our most popular transformer (LT9073) will run up to 32 bulbs - enough for most 6 to 8 room houses.
Please note that while a transformer may power a certain number of bulbs, the maximum bulb capacity of the socket strip and fuse are likely to be less than this. Our most popular socket strip (LT9017) with a 1.5amp fast-fuse (LT9021) has a maximum capacity of 20 bulbs which should not be exceeded, this includes any lights plugged into the terminal strip via extension cords too.
The terminal socket strip should be mounted near the bottom of the outside back wall of the dolls house using the adhesive tape on the back of the strip. The lead-in wire should be connected to the transformer by using the screw terminals (the spade terminals on the end of the wire can be fitted either way round as most dolls house transformers are AC). Make sure the spades are fitted flush against the screws and tighten the screws as tightly as you can manage with an appropriately sized screwdriver to ensure a good connection. Never attempt to touch to the screws or connecting spades whilst the transformer is plugged in.
Before installing any lights, you should temporarily plug them into the terminal strip (one at a time), switch on and monitor for 10 minutes to confirm they are working correctly. Please read our TESTING procedure later in this document for more information on how and when to complete tests and what to look for to detect a fault.
After testing, when you are happy that your lights are working correctly, then you can think about installing them into your dolls house. In order to do this you are most likely going to need to remove the plugs on your lights to enable the wires to pass through small holes leading to the main terminal socket strip. To remove and replace plugs please follow the steps below:
For more tips how to install ceiling lights, wall lights and freestanding lights in your dolls house – such as creating groove channels for wires and at what stage to decorate your dolls house – please check out our How-To Guide: Wired Lights Guide.
Always test each light individually before first use, after any modifications (such as changing a bulb or rewiring a plug) and again after final installation.
It is a good idea to keep a note of which light/component you have tested and when so that you can easily identify which element is causing the fault in your system, should one occur. You may want to purchase spare fuses for your socket strip in case you blow any during testing.
Some or all of the components may become "warm" when in use, which is completely normal. None of the components should become very hot (excluding the bulbs). To reduce the risk of burns or electric shock, please take extreme care if touch-testing the temperature of any elements and do not touch the bulbs at any point during testing as they will be extremely hot.
Bulbs often work loose in transit, or with handling, so if one or more bulbs in the light fails to illuminate during your testing then gently tighten/reposition the bulb/s and try again. If this doesn’t fix the problem then replace the bulb and try again. Always leave the light unplugged to cool for at least 10 minutes before attempting to tighten or replace a bulb as the bulbs will become hot when lit.
Please follow the simple steps below on how to test a light:
2) Plug the transformer into a mains wall socket and switch on (the little bulb on the socket strip should not light up – if it does then the fuse has blown and needs to be replaced)
3) Plug the light to be tested into the socket strip and turn on using the switch on the socket strip
4) Observe the light closely for 10 minutes to ensure it is operating correctly and is not overheating or malfunctioning in any way
If any of the following occurs during your testing switch off and unplug all components immediately and Contact Us for advice:
As we mentioned earlier, our 12v wired lighting products are first and foremost a hobby product for adult miniaturists, designed to bring life and light to your dolls houses and 1:12 scale models. They do not run at the same voltage and are not manufactured to the same specifications as regular household lighting or electrical products. They are not designed to be used for long periods of time and should not be used as a supplementary source of lighting in your home.
Please note that (except the transformers – which are all CE certified) the 12v products we stock are very low voltage and as such are not covered by the usual CE/UKCA certification that apply to most electrical devices and components. However, there is still a risk of fire, injury, electric shock, or other damage if 12v products are used incorrectly or if used when faulty.
We take great care to ensure that all the electrical products we stock are safe to use and easy to install. We carry out strict quality checks on our own LT Miniature Lighting Co products when they arrive from the manufacturer - including external checks by an independent, qualified electrician. We trust that other brands/manufacturers we stock (such as Dolls House Emporium and Streets Ahead) follow similar procedures with their electrical products - although we cannot guarantee it.
The wires used in dolls house lighting products are very thin to allow the lights to be made in such small scale, this means that there is not as much insulation in the wiring as you would find in a life-size electrical product. So, while the system operates at a very low voltage, it does mean that the lights and components can be prone to overheating and we strongly recommend only turning the lights on for short periods of time (maximum 1 hour) and allowing the system to cool thoroughly between uses.
The intricate and delicate nature of miniature scale models means that wiring and installing these products in your dolls houses can be incredibly fiddly (and as talented as our wonderful customers are, most of you are not qualified electricians!) so there is a small element of risk involved with customers who may install or use these products incorrectly. With that in mind, we ask that you strictly adhere to all the safety warnings, instructions and testing procedures in this document to ensure that you are installing and using these products safely. If in doubt – Test, Test and Test Again! - to ensure each element in your system is operating as it should at each stage of your project.
Alternatively, a much simpler option for adding light to your dolls house is battery-operated LED lighting – no wiring required as each light is operated by its own battery and has a switch on the base – Click here to browse our extensive range of battery-operated lighting!
If you purchased any of the products listed below from Minimum World prior to 31/03/2021 then they may have been supplied with a 2-amp surge-protected fuse:
For safety reasons, we now recommend a 1.5-amp or 1.6-amp fast-blow fuse to ensure a swift cut-off of the system should a fault occur.
If you have not already received a replacement fuse from us and are still using a 2-amp fuse with any of these products then please stop use of the product immediately and Contact Us (or email email@example.com) with the product code of your item so that we can send you a replacement fuse free of charge.
Please send any queries or comments by email to firstname.lastname@example.org, by completing a Contact Us form, or by writing to us at the address below:
Minimum World Ltd
Prospect House 2
Loddon Industrial Estate
Little Money Road
If you are unable to resolve your query by these methods then you may reach our customer services team on (+44)(0)1508 528950 between the hours of 10am-3pm on Monday-Friday (excluding public holidays). Please note that any usual network charges will apply to calls from UK mobiles/landlines and additional call charges may apply to calls from international destinations.
This Notice was last updated on 22nd April 2022
Minimum World Ltd | Company Number 4508799 | UK VAT Number 847 1228 25