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What wattage light bulbs do i use with the da-45-12w-1? How many lights will this transformer run?

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One 45 watt bulb

Posted on Apr 16, 2015


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Posted on Jan 02, 2017

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SOURCE: I just purchased some spotlights to add to my

Yes, using a larger wire will help, as will using more than one run. If you want too, you can leave the 16 gauge wire in place, then run the new 12 gauge wire and transfer most of the lights to the new run.

The fewer lights on a run, the less dimming will occur, so put more lights on the 12 gauge run.

Also, the longer the run, the more dimming will occur.
You may want to reconsider the location of the transformer, if possible. In your case, it would be better to locate the transformer in the middle of the current run, and just split the run in half to make a run in each direction. Of course, that depends if you have a 120 volt outlet available in that area.

Posted on Jan 03, 2010

Testimonial: "I just replaced my wire with a 12 gauge and WOW! what a difference! this solved the problem. thanks."

SOURCE: Have a low volt intermatic transformer where only one side works.

If you have 2 sets of A and B terminals, then power pack is usually rated for 600 watts, with 300Watts on each A and B.
I don't know how to tell what wattage power pack is, except add up total watt amount of bulbs that originally came with unit. That should give approximate value of power pack wattage.

Open following link for Power Pack troubleshoot checklist and warranty information and other tips to keep power pack working longer:

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Posted on May 27, 2011

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SOURCE: TDC low voltage transformer model DA 150 12 W reset button trips

There is a short circuit.
Copy following link to identify possible problem and download manual

Posted on Jul 17, 2012

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How do you program a da-150-12w-1?

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Dec 09, 2015 | Malibu Hardware & Accessories

1 Answer

Will my new LED malibu lights work with with my ML200RT transformer? They use considerably less wattage than my old bulb type lamps.

Malibu puts out 12 Volt AC without specifying type of bulb
If new bulbs work on 12 Volt AC, then they should work

Wattage on bulbs should match power pack wattage, or damage can occur to power pack.
Buy new power pack, call Intermatic, or Try it out and see if it works

Sep 05, 2014 | Hardware & Accessories

1 Answer

Our lights were all connected to one transformer, but the second half of the lights were dimmer than the first half. I installed a second transformer to help eliminate the dimming for the second half of...

1) Problem could be transformer voltage and/or length-and-diameter of wire.

2) Open following link for power pack resources including links to manuals, tips, trippers, instructions, and troubleshoot:

3) Unclear what is meant by 1st half and 2nd half of lights.
Do not connect transformers in parallel or series with each other.
Test across terminals A and B and see if it shows 12 Volts. If voltage is less, then power pack is not functioning correctly.
Power pack wattage must match total wattage of bulbs.
First bulb must be 10 feet away from transformer.

4) Use following chart for wire size:

5) Review resources above, and then add a comment for more help.

6) Take a moment and rate answer:
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Sep 05, 2011 | Malibu Hardware & Accessories

1 Answer

I put in a new 200 w Malibu LV. It worked one day, then only one light would work. The next day it worked again on all lights then it went back to lighting only one. I'm using a combination of 12 LV...

I don't have repair for defective transformer.
The transformer puts power on the wire. Buy multimeter and check voltage across the terminals.
If wires are loose, or bulbs are not connected to wire, or bulbs burned out, or if wattage of bulbs is mis-matched with transformer wattage, then lights might not work as expected.

Aug 16, 2011 | Intermatic & Malibu& 300 Watt Power/Pack...

1 Answer

My lawn lights stopped working, transformer tested ok. What could be the problem?

You checked that power pack is getting electricity.
Scratch a wire across both terminal screws and see if there is spark.
If a bulb burns out, and is not replaced, additional power can burn out other bulbs.
Power pack should be unplugged if bulbs are not burning since that can burn out power pack.
Change out a couple bulbs and then plug-in power pack.
Check connections where lights tie into wire.

My power pack was doing same thing, I bought another power pack from Home Depot to check my lights. All but 2 bulbs were burned out. I replaced bulbs and returned new power pack.. and then power pack quit for good a month later.

I found tips to preserve power packs:
1) Match wattage of bulbs with wattage of power pack
-15 each X 20 watt bulbs = 300 watts, so install 300Watt power pack
2) Installing a 500W power pack on 300W of bulbs will burn out bulbs and power pack.
3) Replace bulbs as soon as they burn out or other bulbs will burn out and power pack will burn out.
4) When working on bulbs, unplug power pack or it may burn out.

Nov 14, 2010 | Intermatic Malibu 300W Power Pack...

1 Answer

I have track lighting in my kitchen and a few of the lights burnt out, after i replaced them and went to turn on light ..nothing happened! I have switched them out before with no problem. Also I used the...

I'd first check the fuse on panel. ///If you are using 12v bulbs, then the transformer could be bad. Repost and tell us what wattage and bulbs you are using.

Sep 22, 2010 | Garden

1 Answer

Can I connect more than 6 lights to one garden light fixture package and if so how do I do it?

If you are referring to a wired low voltage light set (you listed under a ceiling fan, so I'm not positive what we're working on) Yes, you can, providing the total wattage of the bulbs is less than the wattage output of the transformer. (i.e. If you have a 50 watt transformer and 6 watt bulbs 6X6=36 you could add 2 more lights, which would be 48 watts) Do not exceed the rated output of the transformer. As to how, they usually use some form of wire piercing connection and usually come with instructions for how to use their connector. Good luck

Mar 20, 2010 | PROGRESS Lighting 52" Signature...

1 Answer

Can you hook up two 12 gauge cables to the power pack of the ML 300 RTW transformer. Power cable would run in different directions. Thank you Joe

Hello yes you can the Important thing to remember here is not to exceed the wattage that the transformer puts out.

Add up the wattage of each bulb that you are running and ensure that you do not exceed 300 watts.

for example a 300 watt transformer could drive
a. 10 - 30 watt bulbs
b. 20 - 15 watt bulbs
c 75 - 4 watt bulbs

Its also ok to mix bulb wattage for example I use 10 watt bulbs in the fixtures in the front of the house but also power 4 20watt spotlights from the same transformer.

Hope that helps

Feb 26, 2010 | Malibu ML300RTW - Low Voltage Power Pack...

1 Answer

I had to unplug my transformer because it was making a buzzing sound every few minutes. (The lights outside were not on either) While it was buzzing it was also dimming the upstairs lights in my house. The...

The transformer is shorted in the windings. DO NOT plug it back in. The high amp draw is dimming the lights. Get a new one. To calculate the wattage rating for the new one: Add the number of lights on the circuit times the wattage per bulb. ( 12 bulbs x 11 watt bulbs = 132 watts. Then you'd get the 200 watt transformer. Get the next BIGGER transformer size available.

Sep 23, 2009 | Intermatic Malibu 300W Power Pack...

2 Answers

My low voltage landscape lights are constantly going on and off once the timer activates them initially. I suspect there is a short somewhere, but is there a good way to locate the short besides pulling up...

Your transformer must have output greater of the total wattage required of the entire system. Example: Putting lights that draw a total of 250 watts with only a 180 watt transformer will result some lights not working, or dimming and flickering, or intermittent power outtages. I learned this from experience. Always go with a transformer that has more wattage available than what is needed. Also, using the incorrect gauge of wire can cause the same issue. Wire creates resistance. Distance the power must travel through the wire creates more resistance at the end of your run than the beginning.

Mar 29, 2009 | Garden

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