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Down lights with transformers how to wire them into lighting circuit

I have just acquired downlights with transformers have been used but need advice about how to link them all and wire them into existing lighting circuit

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  • robbo 69 Oct 25, 2008

    i need the wiring diagram for the dimmable downlights with transformers



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125 VAC to the dimmer - dimmer output to Xfmr in - Xmfr out to lighting

Posted on Nov 23, 2008


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1 Answer

How to test Downlighting transformer

place a multimeter across the low voltage wires. Start at high voltage and reduce when you have some idea of the out put. Check for either ac or dc voltage.

Apr 03, 2013 | Cars & Trucks

1 Answer

52" Vaxcel Fresco II Oil Burnished Bronze Finish Ceiling Fan cant change downlight

why not, cant you figure out how to change a light bulb? Look carefully at the way it is made, look for screws to remove a plastic or glass cover to get access to the downlight ,which i assume is a light that points down.
worst case senario is you have to read the owners manual under how to change the light bulb
or call up customer service and ask them how or at least how to call techinical service.
In all fairness , a down light may not be a light bulb that points down , but some kind of compact flouresent light bulb.
check if vaxcel has a web site. they might have instructions on how to change a down light bulb.

Feb 23, 2013 | Hampton Bay 24002 Ceiling Fan

1 Answer

How do i install set of six downlighters no transformer required

  1. Decide where you wish to place your chosen downlights measuring out the ceiling and marking the central point of the light. Now drill a small pilot hole through the ceiling.
  2. Now you have marked out the positions of the downlights it is a good idea to check above the ceiling to ensure that there are no joists / wires / pipes in the way. You should be able to see a small pinprick of light coming through the ceiling where you drilled the pilot holes. If you are unable to view the ceiling from above it gets trickier. The best way is to determine which way the joists run and what the spacing of them are. You could then use an old wire coat hanger bent at a 900 angle to the width of the downlight. Insert the wire through the hole until the 900 bend is through. Now twist the wire a full 3600 and hopefully it will not bump into any obstructions.
  3. In the instructions or on the box of the downlights it will say what the cut-out for that downlight will be. For the best results I will generally use a hole saw (a type of drill bit) to the correct size of the downlight which can be purchased very cheaply from most DIY stores. Alternatively the use of a plasterboard saw (Pad Saw) can be used which eliminates the need for a drill and hole saw. For this method you will need to draw a circle on the ceiling to the correct size as a guide for when you start to saw.
  4. Hopefully now you have produced a clean cut hole in the ceiling, got the plaster out of your eyes and shaken yourself outside to stop you looking like Casper the ghost!
  5. Once the wiring has been pulled through the hole the downlight can be wired. To fit the downlight into the hole hold the two springs back against the sides of the downlighter and push up into the hole. The springs then lie flat on the top of the ceiling holding it in place

Jan 14, 2012 | Heating & Cooling

1 Answer


Connect to live and neutral, cap other wires and see what happens.
If you have 2 live wires, you might have 3-way switch

Nov 13, 2011 | Home

1 Answer

Installing TB60L transformer with downlight how to wire to existing power

Please get the phase of your power supply. Connect it your transformer inlet and connect the transformer outlet to bulb. Done.
Regards, jay

Sep 23, 2010 | Home

1 Answer

Three years ago installed more than 30 recessed halogen 12V 50W lamps in the ceilings during renovations. Have since spent a large amount calling the electrician to change the transformers when this or...

it was a mistake to install them in first place, now, if your transformer blows, that meant that it is overloaded!

primary solutionto the problem, without adding cost of re-wiring will be change globes (50w) to these of lower wattage, say 40w or even less and this will protect transformers from blowing up.

another solution will be to what is load on the transformer, it must be at least 20% greater than combined light supported. if it is not, then duiring power fluctuation it can, and will be burn out.

say, you have 30 lights and 3 switches, this meant that you have three circuits of say 10 lights. 10lights x 50w = 500wat!!! that is rather large and costly transformer, to avoid this prohibitive cost, solve problem otherways, buy 120watt or 150watt transformer and wire two globes to each. this will provide margin as well as enough supply to support your light.

please bear in mind that you are legally not allowed to touch anything what is connected to mains except changing the globe! you need to speak with elelctrician and come to solution in cooperation with eleloctrician.

if you find this advice useful, please do not hesitate to leave comment and vote for me, thanx!

Jul 29, 2010 | Garden

1 Answer

How many parts in transformer & briefly explained

Firstly - DANGER.Power can kill so be very careful.
These can be made of a couple of parts but are sold as one peice.Check your manufacter for more info.

How Magnetic Iron Core Transformers work........
the transformer has a pair laminated wires normally copper or iron core wrapped around in a tight coil called windings.they are independant circuits not electrically connected together(x2 wires = 2 Circuits)
this creates a magnetic effect when power is applied to one end and mutual inductance creates a power output at the other end.Like a magnet really.

There are some transformers that have a multi voltage outputs called TAPS which will have different voltages to the input voltages.

Input in New Zealand can be 230volts
Output can be 12 volts or 5 volts or 230volts
depending on the applications required,
for example

Street Transfomers can be 11,000 volts INPUT stepping down to 230volts.OUTPUT for your household power
Garden lighting transformers output can be 12volts but still be 230volts input
computers power packs can be multi voltage outputs of 12 volts,9 volts,5volts but still 230volts input.

There are also Electronic Transformers available too.
Commonly used for dichrioc Halogen downlights in homes or the office,

Apr 26, 2010 | Sunbeam Transformer (ICTRBA) ATX Full...

1 Answer

A downlight transformer has failed it is a 20-105w/va & the primary wires black & red come out the same end as the secondary wires -these are a black &red & 2 others to the light. On the...

your new transformer should be fine unless your downlight lamp is 20w,most are 50w 12v so you should check this first.
As for connection your mains supply (primary) connects red to either of the 2 live terminals and black to any of the neutral.The 2 wires from your lamp then go into any pair of the secondary terminals.polarity doesn't matter that is why they are not marked.The transformer can supply 105 w so 2 50w lamps may be connected.

Oct 27, 2009 | Kitchen Appliances - Others

1 Answer

12 downlights in kitchen but 6 not working.

quite possible measure the input and the secondary output - you'll get your answer.

Oct 21, 2009 | Leviton Decora Light Dimmer Switch

1 Answer

Downlighter wiring diagram

I strongly encourage you to contact a licensed electrician for this work. No offense intended, mate...Electrical work is the one thing I would strongly discourage the average homeowner from doing. Unless you know EXACTLY what you're doing, its too easy to make a simple mistake that could injure or kill you and/or your family.

Last time I worked on an electrical system in Europe, it was because a homeowner (improperly) wired new lights into the place I lived that nearly burnt the place down. All of the fixtures had charred wood under them and the insulation had burnt off of the mains.

Apr 05, 2009 | Electrical Supplies

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