TEMCo 100 ft Red + 100 ft Black 12 AWG Solar Panel Extension Cable

In this review the TEMCo 100 ft red plus 100 ft black 12 AWG solar extension cable is evaluated for installers and DIYers who need long, reliable DC runs from panels to inverters. The bottom line: this kit is aimed at solar projects that require durable, weatherproof cabling with secure connectors, and its single biggest selling point is the combination of UL 4703-rated PV wire and silver-plated copper terminals that promise long life and low contact resistance.

Key Features

• UL 4703 PV wire: Provides better low temperature flexibility, sunlight resistance and flame resistance than typical USE-2 cable so it holds up outdoors.
• Silver-plated copper terminals: Reduce contact resistance and resist corrosion, which helps maintain efficient DC transfer over long runs.
• IP67 rated connectors: Offer dust-tight and temporary immersion protection so connections are suitable for rooftop and exposed array installations.
• XLPE insulation and thicker jacket: Cross linked polyethylene insulation improves durability and resists heat and weathering compared with thinner-jacket alternatives.
• High voltage and current ratings: Connectors rated to 1000V and the cable supports 30A on appropriate gauges, giving headroom for typical string runs.
• Made in the USA with lifetime warranty: Backed by a lifetime warranty, which adds confidence for long-term solar installations.

Who It's For

This cable set is best for residential and small commercial solar installers, hobbyists wiring off-grid systems, and anyone doing long DC runs where UV resistance and low-temperature flexibility matter. The 100 ft lengths are especially useful when panels are far from the combiner box or inverter.

It is less appropriate for users who only need a few feet of cable or those with non-PV indoor low-voltage wiring needs; smaller projects could prefer single-length purchases or pre-terminated cable with different connector styles.

Pros & Cons

Pros

• Durable UL 4703 construction and thicker jacket for improved sunlight and flame resistance.
• Silver-plated copper terminals lower contact resistance and resist corrosion for long service life.
• IP67 connectors and robust insulation make this a solid choice for rooftop and exposed array wiring.

Cons

• Some customers report mixed experiences on cable handling; longer 100 ft runs can be bulky and slightly more difficult to route than thinner alternatives.

Specifications

Cable length	2 x 100 ft (one red, one black)
Wire gauge	12 AWG
Connector rating	1000V, 25A for 14 AWG; up to 30A for 12 AWG
Insulation	Cross linked polyethylene (XLPE), thicker jacket
Temperature range	-40C to 85C
Protection grade	IP67, Safety class II, Flame class UL94-V0
Contact resistance	<= 5 mOhm

Our Verdict

The TEMCo 2-pack of 100 ft 12 AWG PV cable is a practical choice for anyone needing long, weatherproof DC runs for solar arrays; its UL 4703 rating, silver-plated terminals and IP67 connectors make it a durable, cost-conscious option and the lifetime warranty adds reassurance for long-term installations.

Frequently Asked Questions

Is this cable suitable for rooftop solar runs?
Yes. The UL 4703 rating, thicker jacket and IP67 connectors make it suitable for rooftop and exposed array runs.

Can the connectors handle standard string currents?
Yes. The connectors are rated to 1000V and support up to 30A on 12 AWG, which covers typical string currents for many residential setups.

Does the product include a warranty?
Yes. The cable and connectors are offered with a lifetime warranty, providing long-term protection for installations.