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  VOLT® PRO 300 Watt (12v-22v) Multi-Tap Low Voltage Transformer for Landscape Lighting
Low Voltage Multi tap Transformers
****Separate circuit breaker toggle switches for each 300w zone. 300W: (1) circuit switch. 600W: (2) circuit switches 900W: (3) circuit switches. 1200W: (4) circuit switches.

Additional Photos:

  • High Performance Toroidal Core
  • Multi-Tap 12-22V
  • Lifetime Warranty

Download the Installation Guide PDF

Retail Price $359.99
Previous Sale Price $289.99
Sale Price $199.00
You save $160.99!

Availability: In Stock
Product Code: 7300W-12VT

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Product Description Product Info Product Dimensions

VOLT® Pro 300 Watt 12-22v Multi-Tap Transformer

Download the Transformer Install Guide PDF

VOLT® 12-22v Landscape Lighting Transformers feature top-of-the-line internal and external components for professional results and commercial reliability. Truly the perfect solution for small to medium landscape lighting systems.

The extremely reliable, efficient, and quiet toroidal magnetic core lasts a lifetime. The transformer also runs cooler than conventional laminated magnetic types. The solid stainless steel body further ensures that this transformer will never corrode.

The 12 to 22 volt taps provide the ability to compensate for voltage loss.

Convenient stainless steel mounting bracket, removable door, and removable lower plate make installation an easy process. Timer and photocell receptacles allow your transformer to be fully programmed to turn your system on and off on your schedule.

Since wiring space is tight with some transformers, our VOLT® 12-22 Volt Multi-Tap Transformers feature approximately 35% more space that allows you to easily organize your incoming lines and make connections without hassle.

Easily one of the best low voltage transformers on the market. Don't settle on any lesser quality! Order your commercial-grade low voltage transformer today from VOLT®

VOLTPro 300 Watt 12-22v Multi-Tap Transformer

Magnetic vs Electronic Transformers

Magnetic Transformers. These transformers use two coils, a primary coil and a secondary coil, to reduce the voltage from 120 volt down to 12 volts. The primary coil carries the line voltage (108 v to 132 v). The flow of electricity through the primary coil induces a magnetic field that creates a current in the secondary coil. Since the secondary coil has 10 times fewer windings, it creates a current with 10 times lower voltage.

Two Types. There are two types of magnetic landscape lighting transformers. These vary by the type of core: laminated/stacked cores (also know as EI type) or toroidal cores. Laminated or stacked windings have sheets wrapped in copper wire that are then stacked or laminated together to make a core. This is the more common, less expensive method for manufacturing a core. Toroidal cores are one solid unit shaped like a donut and have the windings wrapped around the donut, in and out of the donut hole. Toroidal cores are more efficient, experience less buzz, and run cooler but are more expensive to make.

The choice of whether or not to use a toroidal core also depends the system load. Systems with relatively high loads - such as lighting systems with 10 or more fixtures, benefit the most from toroidal cores; smaller systems - such as those with less than 50 watts of load, are served well with EI laminated types. This is why VOLT® sells its smallest transformer (75 watt capacity) with the less expensive EI core.

Electronic Transformers. This transformer type converts the 120 volt current to 12 volts by first increasing the frequency of the current (from 60 Hz to as high as 20,000 Hz). The increased frequency allows the use of a miniature core enabling the transformer to be very small, light, and inexpensive. The biggest downside is that their high frequency current may not be compatible with LED circuits. These currents also suffer from extensive voltage loss compared to magnetic types. A 12-volt electronic transformer must be positioned within about 10 ft. of the fixture. Electronic transformers are also subject to overheating and premature failure.

For all these reasons, VOLT® only uses electronic transformers for indoor lights such as under-cabinet and strip lighting.

Don't forget to order a timer or photocell for automatic operation of your VOLT® transformers.


VOLT® Pro 300 Watt 12-22v Multi-Tap Transformer Features:

  • Stainless steel case
  • Cabinet Dimensions: 18" T x 10" W x 8" D (300W unit = 22lbs)
  • Premium components, windings, primary and secondary circuits.
  • Professional grade low voltage outdoor lighting transformer. Stainless steel cabinet. Weather proof door enclosure, stainless steel mounting bracket, separate circuit breaker toggle switches for each 300w zone.
  • Low voltage transformer designed specifically for outdoor lighting and landscape lighting professionals.
  • Multi-Tap Transformer (12 volt to 22 volts). Enables you to compensate for voltage drop -- even on extra long runs of over 250'!
  • Ensures lights are all bright and even for professional results.
  • Large ports enable 6+ cable home runs per each 300w circuit. (e.g. 6 home runs on a 300w transformer, 12 runs on a 600w, 18 runs on a 900w, 24 runs on a 1200w transformer!)
  • Timer and photocell ready ports (timer and photocell not included).
  • Toroid core--runs cooler, quieter, more efficient, lasts longer.
  • Only draws as much electricity as needed to illuminate the bulbs you have -- e.g. a 1200w transformer will only draw 400w of power if you only have 400 watts of bulbs hooked to it. Guidelines suggest never loading the transformer to more than 80% of capacity (240 watts for this model).
  • Built-in stainless steel mounting bracket.
  • Includes a 5 1/2ft line voltage power supply cord. Not designed to be hardwired or for use with an extension cord, doing so will void any warranties.
  • Top Mounting bracket 1 1/4" tall, 3 keyholes, bottom mounting bracket 5/8" tall, open keyhole
  • E.g. 6 runs on a 300w, 12 runs on a 600w, 18 runs on a 900w, 24 runs on a 1200w transformer!
  • Latest technology -- TOROIDAL CORE transformer
  • Toroid core transformers are the best type of low voltage transformer you can buy. They are more efficient, reliable and last longer than the laminated magnetic transformers found on other brands
  • Toroid cores also run cooler and quieter (no buzzing) than laminated magnetic core transformers.
  • Warranty: Core & Housing - Lifetime | Other Electrical Components - 5 years


Operating Temperatures:

The VOLT¸® Toroidal Core Transformers run 10-20C cooler than laminated magnetic core transformers. They are more efficient, use less energy, last longer, and are more reliable. They are also approved for mounting indoors as well. Below is the normal operating temperatures of our transformers:

The VOLT® transformers are manufactured with thermal protection on the primary, they will automatically shut down when over-heated.

Transformer Instructions

Quick Start General:

  1. The transformer plugs into an exterior GFI outlet. Do not use extension cords with transformers.
  2. Each 300w circuit has its own circuit breaker (toggle switch) and Common (Black label that says COM). E.g. a 300w transformer has 1 COMMON TERMINAL, 600w transformers have 2 COMMON TERMINALS, 900w transformers have 3 COMMON TERMINALS, a 1200w transformer has 4 300w COMMON TERMINALS.
  3. Use COMMON TERMINAL #1 until you begin to approach 300 watts of lamps used (for example when you reach 250-275 watts), then start using COMMON #2, and so on.
  4. This 75W transformer is suitable for outdoor use only.

Connecting Home Runs to the transformer:

  1. The home run cable (e.g. 10/2 or 12/2) has two wires. One wire gets connected to the COMMON TERMINAL (black label that says COM), the other wire connects to a VOLTAGE TERMINAL (the colored labels that say 12, 13,14, etc). Which VOLTAGE TERMINAL you connect that particular wire on depends on the voltage you need for that run. This is a MULTI-TAP transformer, which means you can output at a variety of voltages to compensate for VOLT DROP (see our learning area for more information on layouts and voltage drop). For example, if you have a long run of 100 feet you may need to use the 15v VOLTAGE TERMINAL in order to have 12v of power all the way out at the far away fixtures.
  2. You can hook up multiple home runs to each and any of the terminals. For example you may have 6 home runs, in which case you would have 6 wires in the same COM terminal and the other half of the 10-2 wires go into the colored terminals. The VOLTAGE TERMINALS can have multiple runs/wires in each tap as well.
  3. To connect a home run wire to the terminals, split the 10-2 or 12-2 wire down the middle to separate the two wires and strip half an inch of insulation off each wire. One end goes in the COM terminal, the other into a voltage terminal. Loosen the terminal screws (small flat head screw driver) and insert the wire into the terminal opening which is located at the bottom (90 degrees from the terminal screw facing the bottom of the transformer). Tighten screw to secure wire(s).


  1. Low voltage wire does not have polarity, it does not matter which of the 2 wire connects to the COMMON TERMINAL and which to the VOLTAGE TERMINAL, as long as one wire goes to each.
  2. Optional timers and photocells plug right into the transformer ports labeled and located inside the cabinet.
  3. It is easier to see and insert the wires into their terminals when the transformer is lying on the ground. Affix all your wires BEFORE mounting the transformer.

VOLT Outdoor Lighting Transformer Troubleshooting


  1. First check that there is power at the GFI outlet. Do not assume there is power. Check it with a Voltmeter and make sure there is ~120v AC.
  2. If you have a timer please unplug/remove it. They are often a source of failure. Test the Timer Outlet inside the transformer cabinet with a Voltmeter. You should have 120v AC there as well. If you do, go ahead and plug the timer receptacle cord back into the timer receptacle outlet (the short cord inside the transformer cabinet needs to be plugged into the socket inside the cabinet) to complete the circuit or the transformer will not operate.
  3. If you have a photocell installed, please remove it. Then put the jumper cable back into the photocell receptacle port to complete the circuit or the transformer will not operate. Be sure the jumper is pushed down tight. If you have a photocell in the transformer will not turn on when it is light out. Even if you cover up the photocell there is a delay (the photocell needs to be covered for about 1 minute before it will allow the transformer to turn on).
  4. Make sure all the toggle switches are in the “ON” position (UP). The toggle switches are circuit breakers and can trip if there is a surge, overload or short. Sometimes the circuit breakers themselves can fail.
  5. Now it’s time to test the secondary side (low voltage taps/ multi-tap). Do not use the screws facing forward to test for voltage, put a voltmeter in the “garage door style opening” that hold the cable (on the underneath side of the outdoor transformer). Put one voltmeter prong on the common, the other on a tap (eg 12v tap or 15v tap). You should read anywhere from 12v AC to 22V AC depending on which tap you are testing. If you do not get any voltage, remove any wires (home run wires) from the common and the taps you are testing and try again without any load.

If you are not getting voltage at any of these points:

  1. The Timer Receptacle Outlet
  2. The Secondary Side (low voltage Taps/Commons)

Then call Landscape Lighting World for further assistance (813) 978-3700 and let us know you have gone through the “5 Point Transformer Troubleshooting Checklist.”


VOLT Lighting Shipping Map

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Lifetime Warranty

Low Voltage Transformer Warranty Information

    Stainless Steel Housing - Lifetime
    Toroidal Core - Lifetime
    Other Integrated Electrical Components - 5 Years
    Non-Integrated Photo Cells, Digital Timers & Mechanical Timers - 1 Year

    Stainless Steel Housing - Lifetime
    Toroidal Core - Lifetime
    Other Integrated Electrical Components - 5 Years
    Non-Integrated Photo Cells, Digital Timers & Mechanical Timers - 1 Year

Complete VOLT® Warranty Info Click HERE

For more information or to arrange warranty replacement of your VOLT® Low Voltage Transformer: 813-978-3700 Monday - Friday from 8am to 8pm EST, Saturday and Sunday from 10am to 6pm EST.

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Average Customer Review: 5 of 5 Total Reviews: 34 Write a review.

  0 of 0 people found the following review helpful:
Nice January 19, 2016
Reviewer: Mike Riewer from Snohomish, WA United States  
Seems like a nice, heavy transformer, similar to the FX, Kichler, etc. ones I have used in the past, although at a much better price.  I liked the idea of having such a large range of taps to choose from, but realistically when installing LED bulbs, the voltage drop, even on a 300' long run of 12 gauge, was minimal.  All in all it seems solids and performed as expected out of the box, time will tell if it lasts like the others I've installed!

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  0 of 0 people found the following review helpful:
Transformer July 26, 2015
Reviewer: Daniel L Hay from Zephyrhills, FL United States  
Can't say much yet, unit is setup and ready to go, did alot of research on the lights, will be buying them from Volt over the next few weeks, unit seems to be very well built put her to the test soon.

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  0 of 0 people found the following review helpful:
300 Watt Transformer June 4, 2015
Reviewer: Dan from Ann Arbor, MI United States  
The 300 Watt Transformer was perfect for my landscape lighting application.  The only thing I would change is that I would have liked to have had more room at the bottom of the transformer for all of the wiring.  I was using 7 leads and found that I barely had enough room for all of my 12/2 cable wires.  Other than that, the price was very reasonable and the quality of the transformer is excellent !!!

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  0 of 0 people found the following review helpful:
Transformer May 21, 2015
Reviewer: Peter G from Wilmington, NC United States  
Works great. Had it replaced once under the fantastic warranty. Customer service is excellent.

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  0 of 0 people found the following review helpful:
So far so good. March 26, 2015
Reviewer: Luis Rojas from Carlsbad, CA United States  
Transformers are not something you think about very often. You just want them to work.... that's what this transformer does. It just works. The box still looks as good as new after one year in the open. I bought the timer and the photocell and I haven't had any problems with any of them. Great products!

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