Jewenwils Low-Voltage Transformer
Model: HOSL05A
Type: Instruction Manual
Safety Instructions
Important safety information to reduce risk of fire injury.
- Do not install within 10 feet (3 m) of a pool, spa or fountain.
- There are no serviceable parts inside the power supply unit. DO NOT DISASSEMBLE.
- Do not repair or tamper with cord or plug.
- Do not submerge transformer in water.
- Do not mount the transformer onto combustible material.
- Do not connect two or more transformers in parallel.
- Do not use the transformer with a dimmer switch.
- Plug the power supply unit directly into a GFCI wet location outlet.
- For use with low voltage outdoor landscape lighting system only.
- The maximum output of this transformer is 300 watts. Do not overload the transformer. Be sure that the total cumulative wattage of all 12 volt fixtures connected to the transformer is equal to or less than 300 watts.
CAUTION: This landscape light system must be installed in accordance with all local codes and ordinances. If you are experiencing problems, contact a qualified electrician.
Calculation Lighting Capacity
The 300 Watt transformer has 300 watt circuits which will power up to 300 watts of light. To make sure the maximum number of fixtures can be safely connected to this transformer, add up the individual wattages of all the fixtures. The total wattage of your fixtures must not exceed the output capacity of the 300 Watt transformer.
Installation
1. Preparing the Cable
Being careful when splitting it. NOT to expose the copper cable. Remove the landscape cable insulation 1/2 inch (12.7 mm) from both cables and twist ends.
[Diagram: Illustration showing how to prepare landscape cable. It depicts splitting the outer sheath, then carefully removing approximately 1/2 inch (12.7 mm) of insulation from each inner wire without exposing the copper conductor. The ends of the inner wires are shown twisted.]
2. Connecting the Cable to the Transformer
Lay the transformer on a flat, stable surface and use a screwdriver to connect the stripped ends of the cable under the terminal clamping plate.
Tips:
- Thread your cable through the white plastic loop to reduce its gravity.
- There are 2 terminal output ends; you can choose any of them to connect your cable.
[Diagram: Shows the transformer's terminal block with labels 12V, COM, 14V. It illustrates connecting the prepared cable wires to the terminals. A white plastic loop is shown for cable strain relief. An illustration with a red 'X' indicates an incorrect connection, likely showing wires not properly secured or exposed.]
NOTE: Gently pull on the landscape cable to verify if the connection is strong.
[Diagram: Shows a hand gently pulling on the connected landscape cable to test its security.]
3. Placing Your Fixtures and Routing the Cable
Lay your fixtures (not included) to your desired location. Be sure they do not exceed the 300-watt rating of the transformer. Coil the rest of the cable after the last fixture.
[Diagram: An overhead view of a garden area. It shows a transformer unit connected to a cable that runs to multiple landscape light fixtures placed among plants and along a path. The cable is shown coiled neatly after the last fixture.]
4. Attaching Your Fixtures
Use the cable connectors to attach your fixtures with the cable. Plug the transformer in the GFCI outlet and enter the ON mode. Then the lamps will light up.
5. Mounting the Transformer
Use a screw to mount the transformer directly on a wall. Mounting it 12 inches to 48 inches (0.3 m to 1.2 m) high from the ground is suggested.
[Diagram: Shows the transformer mounted on a wall, connected to a GFCI outlet. Landscape lights are visible below the transformer, connected via the cable. A vertical measurement indicator shows the suggested mounting height range of 12 to 48 inches (0.3 to 1.2 m).]
Operating Instruction
The transformer features several operating modes selectable via the up/down arrow buttons on its display.
Figure 1: OFF MODE
The transformer does not work, there is no output voltage, and the load lamps will not light.
[Illustration: Transformer display showing a blank or zero value, indicating OFF mode.]
Figure 2: ON MODE
The transformer will maintain the output throughout the day, and the load lamps will always be on.
[Illustration: Transformer display showing a value, indicating ON mode.]
Note: If the "." on the display goes off after a few seconds, it means that the wiring of the lamp is abnormal or the wire is broken. You need to cut off the power supply of the transformer to eliminate the abnormal situation, then restart the power supply.
Figure 3: AUTO MODE
In this mode, it will take 30 seconds for the transformer to detect the external environment. If it is night, the transformer will start output 30 seconds later, then the load lamps will light on automatically and turn off at dawn. If it is during the day, the transformer will have no output and the load lamps will not light.
Note: If the light emitted by the load lamps shines on the sensor at night, it may cause the transformer to continuously switch on/off, and the load lamps flash continuously, with a flash interval of 30 seconds.
[Illustration: Transformer display showing an indicator for AUTO mode.]
Figure 4 & Figure 5: COUNTDOWN MODE
In this mode, it will also take 30 seconds for the transformer to detect the external environment. If it is night, the transformer will start output 30 seconds later and the load lamps will light. Then they will turn off automatically when the countdown is over. If it is during the day, the transformer will have no output and the load lamps will not light.
Note: When the system starts to count down, if the surrounding light shines on the sensor for more than 30 seconds, the countdown will end, the transformer will stop output, and the load lamps will go out.
[Illustration: Transformer display showing an indicator for COUNTDOWN mode.]
Figure 6: FAILURE MODE
When the "F" lights, the outlet is overloaded or short circuit. To solve it, pull out the plug and check the circuit. Connect the power again after troubleshooting; the transformer will reset automatically.
[Illustration: Transformer display showing "F", indicating FAILURE mode.]
Symbol Key: ⬆️ / ⬇️ : Selecting the function On-Auto-Countdown-Off.
TIPS:
- When the transformer is working, the small illuminated dot in the lower right corner of the display lights up. If the dot is not lit up, it means that the transformer has no output voltage.
- The transformer has a power-off memory function. After the transformer has been working in the current mode for 24 hours, it will remember the current working mode. When powered on again, it will enter the mode from before the power failure.
- The transformer has two outputs with a total output power of 300VA.
Troubleshooting
- T1. The display shows "F"
- Unplug the transformer from the power outlet.
- Check if the transformer is overloaded or not.
- Check if there is a short circuit at the transformer terminals.
- Check whether the connection between the lamp and the buried wire is short-circuited.
- Press the circuit breaker button switch.
- After troubleshooting, replug the transformer; it will automatically reset.
- T2. In ON mode, the load lamp is off, the display shows "0"
- Unplug the transformer from the power outlet.
- Check if the transformer terminals are properly connected.
- Check whether the connection between the lamp and the buried wire is correct.
- After troubleshooting, replug the transformer; it will automatically reset.
- T3. In AUTO mode or COUNTDOWN mode, the load lamp does not light, the display shows "A" or "N" (N is the selected timing time).
- Unplug the transformer from the power outlet.
- Check if the transformer terminals are properly connected.
- Check whether the connection between the lamp and the buried wire is correct.
- After troubleshooting, replug the transformer into the power outlet.
- Press the up/down button to enter AUTO mode or COUNTDOWN mode, cover the sensor for more than 30 seconds, the load lamp will light up.
Cable Selection Chart
12 VOLT TAP
| Total Fixture Wattage | Cable Length (0-50 feet) | Cable Length (51-100 feet) | Cable Length (100-150 feet) |
|---|---|---|---|
| 0-60 Watts | 16 AWG | 16 AWG | 14 AWG |
| 61-120 Watts | 16 AWG | 14 AWG | 12 AWG |
| 121-180 Watts | 14 AWG | 12 AWG | Not Recommended |
| 181-240 Watts | 14 AWG | 12 AWG | Not Recommended |
| 241-300 Watts | 12 AWG | Not Recommended | Not Recommended |
14 VOLT TAP
| Total Fixture Wattage | Cable Length (0-50 feet) | Cable Length (51-100 feet) | Cable Length (100-150 feet) |
|---|---|---|---|
| 0-60 Watts | 16 AWG¹ | 16 AWG | 16 AWG |
| 61-120 Watts | 16 AWG¹ | 16 AWG | 12 AWG |
| 121-180 Watts | 14 AWG¹ | 14 AWG | 12 AWG |
| 181-240 Watts | 14 AWG¹ | 14 AWG | 12 AWG |
| 241-300 Watts | 12 AWG¹ | 12 AWG | Not Recommended |
AWG¹ Not recommended for Halogen Landscape.
NOTE: This data is provided as a general guideline. Actual performance will depend on the installation layout, the fixtures, and the condition of the cable. If the wire diameter you use is thinner than the wire diameter recommended in the table, it may cause the flickering of the end lamps.
Specifications
- Input Voltage: 120VAC, 60Hz
- Output: 12VAC/14VAC
- Max Power Rating: 300W
Packing List
- 1x Low-Voltage Transformer
- 2x Screws
- 2x Wall Anchors
- 1x Instruction Manual
One-year Limited Warranty
Supported by our professional R&D team and QC team, Jewenwils provides a One Year Warranty for materials and workmanship from the purchase date. Please note that the warranty does not cover damage caused by personal misuse or improper installation.
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