Mep803a white braided wire

[hdsadey]

This is my first post to the website so here goes. I recently bought a Mep803a generator that was missing quite a few parts. I have already located pretty much all the hard parts with the exception of knowing what type of wire it is. The wire I am referring to is the white wire with braided insulation that connects all of the gauges, fuse blocks, terminal blocks, etc. I believe it to be a 20 gauge wire. Does anyone know of a supplier that handles this particular wire? Probably could get away with the standard plastic insulation wire, but since I'm having to rewire several missing components I figured it was worth a shot to find the mil spec version. Any help would be appreciated. Thanks Daniel.

 

[Digger556]

There is a wide array of types of Mil spec wire. I've purchased this style from Aircraft Spruce before

Unshielded Wire MIL-W-22759/16 | Aircraft Spruce

Unshielded Wire MIL-W-22759/16 For many years the standard hookup wire in light aircraft has been MIL-W-5086A, which calls for use of tin-coated copper conductor rated at 600 volts and temperatures of 105�C. This basic

www.aircraftspruce.com

The last digits are gauge and color

 

[Guyfang]

What Digger is telling you is to look at the same size wire in the gen set. The wires have wire numbers. The last two digits are the wire size.

 

[kloppk]

The -24P TM will list the wire number used in the set.

 

[kloppk]

It looks like the 20 Gauge is M5086/2-20-9

 

[2Pbfeet]

@hdsadey The white wire with braid is almost certainly TGGT (Teflon-Glass-Glass-Teflon, occasionally as TFFT Teflon-Fiberglass-Fiberglass-Teflon) wire, with a special insulation and temperature (450C/840F) and amperage rating. The higher amperage ratings follow from the high temperature insulation performance. You should match the gauge of the wire on the wire label or in manual, but not with just any wire, you want to match the insulation as well. More on TGGT below;

TGGT Wire | Allied Wire and Cable

Teflon-glass-glass-Teflon (TGGT) with nickel-plated copper wire is designed not to become brittle in extremely high-temperature conditions over 200°C.

www.awcwire.com

High Temp SPEC 42042

cabletechsupport.southwire.com

McMaster, eBay, and Amazon all sell TGGT wire in a variety of gauges. A search for high temperature wire can help uncover more sellers. Some sellers push versions with mica but mica containing TGGT wire versions should have similar performance, not better performance, but the temperature specifications are, I think, the specification to watch. The fiberglass and teflon make the wires more resistant to oil, vibration, and chemicals than the typical SEOW insulations.
e.g. Toyeang High Temperature Fiberglass, or Bryne TGGT

Inside generator enclosures can get rather warm and are likely to exceed the typical electronic and home wiring temperature ratings under some conditions.

All the best,

2Pbfeet

 

[Toolslinger]

Depending on how much you're missing, you might want to look around for a crapped out generator, and just replace the harness. That keeps everything in spec, plus all the labels are already on the wires, along with the terminations. In your case a dead 803a, or 813a would work. It would likely provide spares of other potentially needed components too.

 

[Guyfang]

I several times, just what Toolslinger suggested. Pulled whole wire harnesses out of scrap bins and then sometimes replaced the harness, OR, pulled individual wires out and then threaded them back in to a set that needed THAT wire. I figured that I could make some poor guys life easier if the wire number was the right one, when he was troubleshooting.

 

[Light in the Dark]

I've got two sets of basically complete front box wire harnesses available.

 

[hdsadey]

TGGT is the nomenclature I was looking for. Unfortunately when they cannabalized the generator they cut wires instead of unclamping them, effin neanderthals!!!! The master switch, emergency shutoff, the resistor/diode stack on the left inside first back wall, a solenoid in the second compartment, etc. I've rewired lots of things and built new wire harnesses for motorcycles, airboats, cars and trucks so it's just time and patience. Some consider it therapy, I'm one of those who likes a challenge. I appreciate all the help. Light in the dark I reached out in a PM.

 

[2Pbfeet]

TGGT is the nomenclature I was looking for. Unfortunately when they cannabalized the generator they cut wires instead of unclamping them, effin neanderthals!!!! The master switch, emergency shutoff, the resistor/diode stack on the left inside first back wall, a solenoid in the second compartment, etc. I've rewired lots of things and built new wire harnesses for motorcycles, airboats, cars and trucks so it's just time and patience. Some consider it therapy, I'm one of those who likes a challenge. I appreciate all the help. Light in the dark I reached out in a PM.

I'm glad it helped. Most of the ends take high temperature crimp connectors, but if you use the MIL-Spec parts, they will be fine. If you can get most or all of them as a wire harness, that sounds like a win to me.

Allthe best,

2Pbfeet