Does this work well for wiring audio cable jacks? Will the sound be affected?

This is 24 awg (pretty thin) wire, not shielded cable or speaker wire. Usually audio cables are made of stouter stuff to make them mechanically robust. From a signal perspective, used for short (~1m) runs and modest (~10mW) power and a not too electrically noisy environment this should work ok for audio. It will probably break if abused much at all, though.

Can anybody tell me. Is the 30 gauge wire suitable to for soldering the tail motor back on to my rc helicopter?

It depends on the current drawn by the motor. A 30gauge wire is rated for a max of 0.86amps

Would this wire work for creating gizmos and gadgets with elementary students?

This wire is extremely flexible, the insulation is silicone and feels very soft and slippery. It will strip easily with the correct tool. When bent it will not hold any shape. Not sure what type of projects you have in mind. using these for breadboard connections will be fine due to the number of colors available.

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18awg Silicone Electrical Wire Cable Kit 7 Colors 13ft Each Spool | 18 Gauge Hookup Wires Stranded Tinned Copper Wire Flexible and Soft for DIY

Product ID: 151943848

Details

Brand
Haerkn
Color
7 Colors
Gauge
18
Material
Silicone
Number of Cable Strands
150

⚡600V Voltage Rating

🌈7 Vibrant Colors

🔥Temp Range -60°C to 200°C

AR$70723

Duties & taxes included

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Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌈 Wire your world with color, power, and precision!

VIBRANT COLOR CODING - 7 distinct colors to organize and identify your circuits like a pro.
SUPERIOR CONDUCTIVITY - Oxygen-free, tin-plated copper strands ensure minimal resistance and max efficiency.
UNMATCHED FLEXIBILITY - Silicone insulation + 150-strand tinned copper for effortless bending and routing.
HIGH VOLTAGE ENDURANCE - Rated for 600V with 2000V test voltage for reliable, safe performance.
EXTREME TEMPERATURE RESILIENCE - Operates flawlessly from -60°C to 200°C, perfect for any environment.

This 18 AWG silicone electrical wire kit features 7 color-coded 13ft spools of highly flexible, oxygen-free tinned copper wire rated for 600 volts and temperatures from -60°C to 200°C. Designed for professional DIYers and engineers, it offers superior conductivity, durability, and easy handling for all your electrical projects.

Specifications

ASIN	B07THZBMPQ
Best Sellers Rank	#11,671 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #69 in Electrical Wire
Brand Name	Haerkn
Color	7 Colors
Customer Reviews	4.6 4.6 out of 5 stars (487)
Gauge	18
Manufacturer	Haerkn
Material Type	Silicone
Model	Small Spool wire
Number Of Wires	1
Part Number	Small Spool wire
Strands	150
UPC	652890996675
Unit Count	91 Feet
Voltage	600 volts

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