20 Swg Tinned Copper Fuse Wire

Description

According to standard industrial fusing tables (such as IS: 9926), a single strand of 20 SWG tinned copper wire typically performs as follows:

Approx. Fusing Current: ~70 Amps. This is the peak current where the wire will melt to break the circuit.
Safe Current Rating: 32 Amps to 34 Amps. It is most commonly used as the fusing element in 32A Kit-Kat style porcelain fuse carriers.
Resistance at 20°C: Approximately 0.0293 to 0.0311 $\Omega/m$ .
Material: High-conductivity copper with a tin coating, which prevents oxidation and ensures low-resistance contact over time.

32A Ring Main Circuits: Often used to protect a group of standard wall sockets in large residential or commercial properties.
Medium-Sized Motors: Protection for industrial equipment that requires a higher startup current.
Main Switchboards: Frequently utilized in distribution panels for sub-mains in smaller apartment blocks.

This wire is typically sold by weight in reels (500g or 1kg) or in smaller 100g rolls.

Product / Supplier	Key Features	Price (Approx.)
20 SWG Tinned Copper Wire	Industrial-grade, solid round conductor for overcurrent protection.	₹880 / kg
20 Amp Fuse Wire (100g)	Convenient 100g roll for maintenance and repair kits.	₹165 / roll
20 SWG Tinned Fuse Wire	High conductivity, silver-tinned finish for corrosion resistance.	₹850 / kg

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