Is it resistent to UV light (i.e.,exterior use)?

Silicone is highly UV resistant. Howver, single conductor wire should not be used "in the open" if the voltage on the conductors is hazardous, approx 24 volts ac or 60 volts dc. There is a need for mechanical protection of insulation (like at least the jacket of a cable, if not some sort of conduit) as well as basic insulation.

Can someone confirm me what over diameter means? is it the insulator + wire diameter?

The standardized method of measuring the thickness of a cable (American Wire Gauge or AWG) was established in 1857 in the United States. This form of measuring cable thickness is used specifically for electrically conductive wire. Note that the diameter of the cable does not include the outer insulation - just the conducting wire on the inside.

Does 18awg mean that it’s for 18 volts? i need it to extend the black and red cords for 12v speakers

In response to a previous answer, the smaller the gauge number, the bigger it is in diameter and the more amps it can handle. Each AWG size is rated for a certain amperage at a certain voltage. So to start, you should find out what voltage your system is running at. Then, look up a table of the maximum amperage at that found voltage. Finally, select a wire gauge that is over that limit. The further you go, the cooler it will stay and the safer it should be. For example, say we have a motor that uses 35 amps at 12 volts. According to a cart I looked up, at 12 volts AWG 12 gauge wire can handle 41 amps while AWG 14 is only rated for 32. Therefore, we should select AWG 12 gauge or higher to handle the load without burning up. There is a whole science and you can really get into the math of it but this is a good place to start. If you want to be safe, you can always go a bit higher and sacrifice a little extra cash for peace of mind. I hope this helps

Will this work in auto use? I'm replacing broken wires in a lighting harness on a pick up truck.

yes,auto use for lighting harness on a truck,this wire Bear Current 5A

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⚡ Wire up your projects with flexibility and fireproof confidence!

DUAL COLOR CODING - Includes 10 ft each of red and black for easy circuit identification
FLEXIBLE POWERHOUSE - Soft silicone insulation ensures effortless bending without damage
COMPACT READY TO USE - 20 feet total length in sleek packaging, ideal for professional projects
HEAT RESISTANT RELIABILITY - Withstands high temperatures, perfect for demanding electrical setups
PREMIUM MULTI STRAND DESIGN - 150 fine copper strands deliver superior conductivity and durability

Haerkn's 18 AWG silicone hook-up wire offers 20 feet of high-quality, flexible, and heat-resistant cable with 150 strands of tinned copper, rated for 600 volts. Perfect for professional electrical applications requiring durability and easy circuit management with dual-color wires.

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Colour	Red,Black
Brand	Haerkn
Material	Copper
Number of Cable Strands	Multi Strand
Gauge	18.0
Voltage	600 Volts
Manufacturer	Haerkn
UPC	754047498442
Model number	Haerkn
Item Weight	68 g
Package Dimensions	11.68 x 9.65 x 0.76 cm; 68.04 g
Item model number	Haerkn
Cable Interface	Flexible
Are batteries included?	No

Haerkn Electrical Wire 18 AWG 18 Gauge Silicone Wire Hook Up Wire Cable 20 Feet [10 ft Black and 10 ft Red] - Soft and Flexible 150 Strands 0.08mm of Tinned Copper Wire High Temperature Resistance (18

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