12 AWG M22759/32 Tefzel Wire for Motorsport Wiring
12 AWG M22759/32 Tefzel wire is the main power gauge, stocked in black, red and white. Battery feeds to the PDM or fuse block, main grounds and any circuit pulling serious current run in 12 AWG.
12Volt Motorsports stocks 12 AWG Tefzel wire by the metre for professional harness construction. We are based in Altona Meadows, Melbourne and ship Tefzel wire Australia-wide. M22759/32 is the wire known in the trade as Spec 55 (TE Raychem part series 55A0111), same specification, two names.
12 AWG Specifications
| Specification | M22759/32 (Spec 55, TE 55A0111) |
| Conductor | Tin plated copper, 3.31 mm2 |
| Working current | 27 A single conductor in free air, 30 degrees C rise. Derate for bundles |
| Insulation | Cross linked modified ETFE (Tefzel) |
| Rating | 600 V, rated to 150 degrees C |
Common 12 AWG Tefzel Wire Applications
| Application |
Suitability |
| Main power feeds to PDM or fuse block | Suitable for main supply circuits |
| Main harness grounds | Suitable, keep ground runs short and direct |
| High current pump and fan circuits | Suitable where 14 AWG would run warm |
| Starter and alternator mains | Not suitable. Use battery cable sized for the load |
How Do I Choose the Right Tefzel Wire Size?
Wire size should be selected on current draw, circuit length, voltage drop, ambient temperature, bundling, connector rating, fuse rating and PDM current limit, not current draw alone. If the circuit carries significant current or runs a long distance through the vehicle, voltage drop may require a larger wire. Neighbouring gauges: 14 AWG. Full range on the Tefzel wire and cable page.
For a detailed reference, download our Tefzel wire size, colour and ampacity chart.
Download the Tefzel Wire Size, Colour and Ampacity Chart
What Should I Use With 12 AWG Tefzel Wire?
12 AWG Tefzel is commonly used with Raychem DR25 outer sleeving, Sumitomo W5DL adhesive heatshrink at splices, Deutsch DTM connectors and ECU plugs and pins.
Why Buy Tefzel Wire From 12Volt Motorsports?
We are a Melbourne based motorsport wiring specialist and we run this exact wire in our own custom harness builds, ECU installations and PDM wiring. If you are unsure whether 12 AWG suits your circuit, contact us before ordering and we will spec the wire size, colours and quantities for you.
Frequently Asked Questions
Where can I buy 12 AWG Tefzel wire in Australia?
12Volt Motorsports stocks 12 AWG M22759/32 Tefzel wire in Australia in black, red and white, sold by the metre, shipped Australia-wide from Melbourne.
What is 12 AWG Tefzel wire used for?
Main power feeds to PDMs and fuse blocks, main grounds and high current circuits.
How much current can 12 AWG Tefzel carry?
Around 27 amps for a single conductor in free air with a 30 degrees C rise. Derate for bundled runs. For feeds beyond this, step up to battery cable.
What colours does 12 AWG Tefzel come in?
Black, red and white, which covers power, ground and switched feed identification on main circuits.
Do you ship 12 AWG Tefzel wire Australia-wide?
Yes. We ship Australia-wide, usually same or next business day.
Related Motorsport Wiring Products
Need Advice?
Call us on 0458 102 134 or email 12voltmotorsports@gmail.com. We are happy to help you work out whether 12 AWG Tefzel wire is suitable for your wiring project.
