Triple Insulated Wire, 20 AWG ETFE Reinforced Winding Wire, 155°C - 5 Spool Sizes

Triple insulated wire is a winding wire construction that uses a single copper conductor coated in three distinct insulation layers. This modified ETFE insulation shields the conductor from short-circuiting, interwinding breakdown, and the mechanical stress of winding. This reinforced, three-layer insulation construction delivers voltage and dielectric performance, along with creepage/clearance compliance, beyond what single-layer magnet wire can provide. 20 AWG triple insulated wire balances solid current-carrying capacity with easier handling on the bobbin, making it a common choice for general-purpose transformer and SMPS coil winding. This gauge is frequently specified for isolation and switching transformers where a moderate turn count needs to fit within a mid-sized bobbin window. This wire meets Class F service requirements (155°C/311°F) and carries several UL/IEC/VDE compliances and insulation system approvals, making it a fit for switching transformers, medical devices, and other components requiring rigorous regulatory compliance.

Looking for a finished coil rather than raw wire? Our coil winding services team can wind this wire to your specifications.