DEWENWILS SHOSL05F 300W Low Voltage Transformer: specs and how it works

The DEWENWILS SHOSL05F is a 300W low voltage transformer for outdoor landscape lighting. It plugs into a household outlet and steps the mains voltage down to a lower level that path lights, spotlights and deck lights are designed to run on. A stainless steel shield protects it from the weather.

What a low voltage transformer does

Landscape lighting is usually designed around 12V systems. The transformer takes 120V AC from a normal outlet and delivers a lower, safer voltage to the cable that runs through the garden. DEWENWILS describes the output as a safety voltage. The SHOSL05F offers multiple taps: 12V, 13V, 14V and 15V.

Having several taps helps because voltage drops along a long cable. Lights at the far end of a run can look dimmer than those near the transformer, and a higher tap can make up part of that difference. The right choice depends on your fixtures and cable length, so check the lights' own instructions.

Multi-tap output and capacity

The 300W figure is the total the unit can supply. DEWENWILS advises that the combined power of the landscape lights should not exceed 80% of the power pack's capacity, which works out to about 240W here. That headroom is common advice with transformers, and it leaves room for later additions. Add up the wattage of every fixture before you connect them.

The multi-tap design is described as letting you add or remove circuits around the house as your lighting changes.

Stainless steel shield

The transformer sits inside a heavy-duty stainless steel shield with a locking latch. DEWENWILS says the shield protects it from severe weather and keeps water out. Stainless steel resists rust well, though no outdoor enclosure replaces sensible placement, so mount it off the ground and away from standing water.

Installation

The listing describes a simple set-up. You remove the knockout or the black lid at the bottom to thread your wires out. The unit has a built-in hanging hole and a 6 ft SJTW 18AWG power cord, so it can be mounted directly on an indoor or outdoor wall. It measures 13.4 x 4.9 x 5.6 inches.

Timer and photocell ports

The transformer has a port for a photocell sensor, which is not included, and one for a timer, which is sold separately. A photocell turns lights on at dusk and off at dawn. A timer lets you choose set hours. The brand also says the transformer can be connected through a smart plug.

Protection

A built-in automatic circuit breaker gives overload and short circuit protection. If a wiring fault or too many fixtures trip it, the output stops until the cause is dealt with.

Who it suits

It suits homeowners adding or extending a 12V landscape lighting layout, such as path lights, step lights, spotlights and deck lighting, and who want taps to tune the voltage and the option of a sensor or timer later.

What to check before you buy

• Fixture type: confirm your lights are low voltage AC-compatible and note their wattage.
• Total load: keep the total at or under 80% of 300W.
• Cable run: long runs may need a higher tap or heavier cable.
• Accessories: the photocell is not included and the timer is sold separately.
• Mounting spot: you need a nearby outlet and a place to hang it.
• Codes and manual: follow local electrical codes and the manual for wiring and outdoor outlets.

The short version

• A 300W low voltage transformer, model SHOSL05F.
• Converts 120V AC to 12V, 13V, 14V or 15V taps.
• Stainless steel shield with a locking latch.
• Timer and photocell ports; smart plug use is possible.
• Built-in automatic circuit breaker, with a 6 ft power cord.

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