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  VOLT 300 Watt 12-15v Multi-Tap Transformer | Low Voltage Landscape Lighting
Low Voltage Multi tap Transformers
*The pictured Digital Timer and Photocell is an optional addition and is NOT included in the base price.

Additional Photos:

  • High Performance Toroidal Core
  • Multi-Tap 12-15V
  • 10 Year Warranty

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List Price: $399.99
Our Price: $299.99
Sale Price: $179.00
You save $220.99!

Product Code: 7300W-1215

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Product Description Product Dimensions

VOLT® 300 Watt 12-15v Multi-Tap Transformer

Download the Transformer Install Guide PDF

Volt's® 12-15v Landscape Lighting Transformers feature top of line internal and external components for professional results and commercial reliability. Truly the perfect solution for all your low voltage landscape lighting needs. The extremely reliable, efficient, and quiet toroidal magnetic core can easily last for 20+ years. The toroidal core transformer also runs 10-20°C cooler than your conventional laminated magnetic transformers, its approved for indoor mounting! The solid stainless steel body further ensures the longevity of this transformer as well as a rust deterrent. Our 12-15 volt taps make it easy to adjust your voltage output to an optimal level for your light fixtures. Convenient stainless steel mounting bracket, removable door, and removable lower plate make installation an easy process. Optional timer and photocell receptacles allow your transformer to be fully programmed to turn your system on and off on your schedule. We understand that wiring can be difficult on a transformer with a very small body cavity, giving you little room to work with. Our VOLT® 12-15 Volt Multi-Tap Transformers feature approximately 35% larger openings that allow 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 quality low voltage transformer today from VOLT®

VOLTPro 1200 Watt 12-22v Multi-Tap Transformer

Magnetic Transformers vs Electronic Transformers

Magnetic 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 (110 v or 120 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 fewer windings, it has a low voltage. The size of the secondary coil or windings determines the voltage output of the transformer.

With-in magnetic transformers there are two types of coils or windings: laminated/stacked cores 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, don't buzz and rattle, run cooler but are more expensive to make.

In either case, toroidal or laminated cores, magnetic transformers use a lot of copper windings, are very heavy and expensive. However they are the much more reliable, quieter and the only real solution for an outdoor lighting solution.

Electronic Transformers use an inverter to change the frequency of the electricity form 50 Hz to about 20,000 Hz. By not using bulky and heavy copper windings, electronic transformers can be very small, light and inexpensive. As such they can even be incorporated into the lighting fixtures themselves. All transformers that are small, light or built into a fixture are electronic. The downside is they have short life spans and can be noisy. For example you are probably familiar with the florescent light that takes a long time to come on or that florescent fixture that has failed-- that is usually the result of the electronic transformer in the ballast failing-- a very common occurrence. Additionally they cannot take as high loads and their performance is effected by heat. They hotter the operate or their operating environment, the shorter their life span. Electronic transformers will not perform well in hot environments.

In short magnetic and electronic transformers use two different technologies to lower the voltage-- one is inexpensive but unreliable, the other is heavy duty but bulkier and more expensive.

ETL Listed, 10 year warranty. Don't forget to order a timer or photocell for automatic operation BEST TRANSFORMER ON THE MARKET

VOLT® 300 Watt 12-15v Multi-Tap Transformer Features:

  • Stainless steel case
  • Built-in stainless steel mounting bracket
  • 300W Cabinet measures: Length 13" Width 5.5" Height 5.5"
  • 300W Weight: 13 lbs
  • Input Voltage: 120V A/C
  • Output Voltage: 12v, 13v, 14v and 15v A/C
  • Premium components, windings, primary and secondary circuits.
  • Latest technology -- TOROIDAL CORE transformer
  • Low voltage transformer designed specifically for outdoor lighting and landscape lighting professionals.
  • Ensures lights are all bright and even for professional results.
  • Photocell and timer ready ports (photocell and timer not included)
  • Only draws as much electricity as needed to illuminate the bulbs you have -- e.g. a 300w transformer will only draw 150w of power if you only have (3) 50 watt bulbs hooked to it. The 300w refers to the maximum wattage you can hook up to it
  • 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
  • VOLT's® 10 Year Warranty


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 automcatically shut down when over-heated.

    Transformer Instructions

    Quick Start


    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.

    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/ mutitap). 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:

    a. The Timer Receptacle Outlet

    b.The Secondary Side (low voltage Taps/Commons).

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

Landscape Lights In Stock and SHIP SAME DAY

Landscape Lighting World is different than other wholesale distributors (and most other websites)--ALL items pictured on our website are in stock at our own warehouse here at our HQ and ship out with-in 24 hours.


All orders received before 5PM EST ship out the same day (M-F). Orders leave our Tampa, FL warehouse via FedEx Ground/Home Delivery. Consult the Fedex Ground Delivery Time Map below for estimated transit times to your area.

If you need an item shipped faster (Fedex 2nd Day Air or FedEx Overnight), you can select the preferred ship method right at checkout!


We now deliver on Saturdays* (At no additional cost for residential/non-commercial addresses). Any residential delivery scheduled to arrive on a Monday based on the map below, will now arrive 2 days earlier on Saturday! (For example: Order at 4:30pm on a Friday and if you live in FL you'll have it the next day on Saturday.) *FedEx delivers on Saturday to nearly all zip codes; to be certain they deliver to your zip code contact FedEx at 1-800-GOFEDEX before placing your order.

FedEx Ground Map


Expedited shipping options are now available right at check out! We offer the best rates on FedEx 2Day Air and FedEx Overnight!


We require $1,000 USD order minimum (before shipping charges) on first time orders and a $500 USD order minimum (before shipping charges) on all future orders with an established account.

The recipient of an international shipment is responsible for any import taxes, custom duties, and any additional fees levied by the destination country. We have no control over these charges and cannot predict what they may be. Customes policies vary widely from country to country. Contact your local customs office for further information.

When custom clearance procedures are required it can cause further delays in shipment.

Due to high shipping costs/duties. International customers are responsible for shipping on warrantied replacements, returns, and/or exchanges.


If there is a problem with your order that is deemed to be caused by LLW (wrong item, quantity or defective), LLW will pay for return shipping and re-shipping the proper item(s). If there is a need for a return for any other reason, the customer is responsible for the return shipping charges. For details on returns and exchanges, please see our Returns Policy page.


We do not profit on shipping, in fact we pass on our FedEx discount to you. Our products are made of the highest quality heavy duty material (solid brass, no lightweight aluminum), as a result they weigh a lot. Weight is the primary factor in estimating shipping charges calculated by FedEx, and with larger orders, weight can total hundreds of pounds. Sites that offer free shipping are charging much more for an equivalent product.

Average Customer Review: 4.5 of 5 | Total Reviews: 14 Write a review.

  0 of 0 people found the following review helpful:
Great transformer--solidly built February 28, 2014
Reviewer: George from Ft Myers Fl  
this is a professionally built transformer with plenty of power for landscape lighting especially when used with LED bulbs.

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  0 of 0 people found the following review helpful:
Volt transformer February 4, 2014
Reviewer: Joan from Lansdale PA  
We needed to replace a defective low voltage timer that stopped working.

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  0 of 0 people found the following review helpful:
300 Watt multi tap transformer December 2, 2013
Reviewer: DIY Lights guy from Yavapai County  
We live in the "country" with no street lights or other illumination and on moonless nights it is DARK. With a driveway over 250 long and a walkway to the front door about 70 feet long I needed a multi-tap transformer to push the voltage out to the last bulb without over powering the ones close in.    Using dimmable LED's and the 300 watt multi tap transformer I was able to put 18 lights on one

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  0 of 0 people found the following review helpful:
great product a couple of weak points November 23, 2013
Reviewer: handyman from TX  
The taps are hard to see when feeding them in.  The instructions could be better I did not see where it mentioned the plug had to be connected.||It's a well built unit just a couple of minor nag points.

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  0 of 0 people found the following review helpful:
Perfect November 21, 2013
Reviewer: SeanM from Miami FL  
I have a small back yard (25x90) and wanted to put low voltage LED lights.  Only about 110 watts total power draw.  I got this because I can run a longer wire to my front yard using the higher voltage connection too.  I had started with the transformers available at H**e D***T and L***s.  Yes I bought one from each.  Neither worked.  No joke - I did all this work laying the cable and installing

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