SPT-2 18/2 Low Voltage Landscape Wire 500FT - Durable Outdoor Cable

In this review the SPT-2 18/2 Low Voltage Landscape Wire 500FT is evaluated for homeowners, landscapers and DIY installers who need a long run of reliable low-voltage cable. The bottom line: it is best for outdoor lighting and low-voltage systems because of its silicone rubber insulation that resists water, dirt and sunlight, and because the 500 ft spool avoids frequent joins. The reviewer found the cable to be flexible, easy to strip and robust in wet conditions, making it a practical choice where durability and weather resistance matter.

Key Features

• Silicone rubber insulation: Provides high and low temperature resistance so the cable can survive seasonal extremes without cracking.
• Direct burial safe: Water, dust and dirt resistance allows the wire to be buried or exposed to sunlight for long-term outdoor use.
• Low-voltage rating: Rated for 300 volts but intended for 30 V or below applications, making it suitable for landscape lighting and garden fixtures.
• Flexible stranded copper: Stranded construction keeps the cable pliable for routing around corners and easier termination at connectors.
• Length and gauge: A full 500 ft spool of 18 gauge 2 conductor wire reduces the need for multiple runs and splices on larger properties.
• Safety certification: UL certification and fire rating VW-1 give added assurance for quality and service life.

Who It's For

This cable is aimed at homeowners installing landscape lighting, Christmas lights, security lights, outdoor speakers or solar panel connections that require low-voltage wiring and robust weather resistance. It is also useful for landscape professionals who need long continuous runs without many splice points.

It is not ideal for high-voltage mains wiring or applications requiring very thick conductors; if a project needs higher amperage capacity or a government electrical inspector requires different materials, those buyers should choose a cable specified for those conditions.

Pros & Cons

Pros

• Good waterproofing and dirt resistance make it dependable in wet conditions and direct sunlight.
• Flexible stranded copper is easy to handle and strip during installation.
• 500 ft spool reduces joints and provides convenience for large yards or multiple fixtures.

Cons

• The 18 gauge thickness drew mixed feedback from some users who expected a heavier gauge for very long runs or higher-current fixtures.

Specifications

Product length	500 ft
Conductor	18 AWG, 2 conductor stranded copper
Insulation	Silicone rubber (SPT-2)
Rated voltage	300 volts (intended for 30 V or below use)
Fire rating	VW-1
Applications	Landscape lighting, security lights, outdoor speakers, solar panels

Our Verdict

The SPT-2 18/2 Low Voltage Landscape Wire 500FT is a practical, good-value option for outdoor low-voltage lighting and related projects where weather resistance and a long continuous spool matter. Installers who need flexibility, direct burial capability and UL safety markings will find this a reliable choice, while those needing heavier gauge cable for very long runs should consider a larger conductor.

Frequently Asked Questions

Can this wire be buried directly in the ground?
Yes, the product description states it is suitable for direct burial thanks to water and dirt resistance.

Is this cable suitable for 120 V household circuits?
No, this is a low-voltage cable intended for 30 V or below applications despite a 300 V rated insulation; it is designed for landscape and low-voltage systems.

Will the insulation hold up in sun and rain?
Yes, the silicone rubber insulation is described as resistant to direct sunlight and weather, and customers report it performed through heavy rain.