Page 51 - IS-Rayfast Catalogue - Issue 9, 2017

Wire and Cable
NEMA WC27500 • M27500
Airframe and Equipment Wire
Military and Commercial Aerospace

The ANSI/NEMA WC27500 REV A specification 1
is commonly used to describe both shielded
and unshielded cable constructions for
avionics, aerospace and airframe applications. 2
The specification allows the user a wide variety
of construction choices. Circuit identification,
conductor size, insulation type, number of 3
conductors, shielding material and jacket
compound may all be specified.
4
QPL is required for WC 27500 in addition to the
RoHS basic component wires. The producer of the
compliant finished cable must be a qualified source under 5
the applicable basic wire specification or must
provide evidence that Qualified wire was used
in the construction of the cable. 6
The colour identification charts below should
be used in conjunction with the part M27500 7
numbering guide illustrated over the page.
8

M27500 Colour Table 3A
9
illustrated in chart below.
Wire 1 Wire 2 Wire 3 Wire 4 Wire 5 Wire 6 Wire 7 Wire 8 Wire 9 Wire 10 Wire 11 Wire 12 Wire 13 Wire 14 Wire 15 10

11
White Blue Orange Green Red Black Yellow Violet Grey Brown Blue Orange Green Red Black
Wire Single stripe on white wire Double stripe on white wire
12
M27500 Colour Table 3B
For cables having 1-4 and 6-10 wires colour designation is based on stripe over white wire. Whilst wire 5 has no stripe. 13
Wires 11 to 15 colour designation indicates insulation colour with a white stripe.
M27500 Conductor Temp. Voltage
Reference Jacket Insulation AWG Wire 1 Wire 2 Wire 3 Wire 4 Wire 5 Wire 6 Wire 7 Wire 8 Wire 9 Wire 10 Wire 11 Wire 12 Wire 13 Wire 14 Wire 15
Ident. Plating Rating Rating
14
M81044/5 MD Silver Extruded XL-PVDF 150ºC 600 V 24 to 0
M81044/6 ME Tin Extruded XL-PVDF 150ºC 600 V 24 to 0 Red Blue Yellow Green White Black Brown Orange Violet Grey Red Blue Yellow Green Black
Stripe over white wire Insulation colour / white stripe 15
M81044/7 MF Silver, HSCA Extruded XL-PVDF 150ºC 600 V 26 to 20
M81044/8 MG Silver Extruded XL-PVDF 150ºC 600 V 24 to 0
16
M81044/9 MH Tin Extruded XL-PVDF 150ºC 600 V 24 to 0
M81044/10 MJ Silver, HSCA Extruded XL-PVDF 150ºC 600 V 26 to 20
insulation colour may be opaque dark yellow or unpigmented polyimide resin colour.
M81044/11 MK Silver Extruded XL-PVDF 150ºC 600 V 30 to 12 26 24 24 20 18 16 14 12 10 8 6 4 2 1 0 00 17
M81044/12 ML Tin Extruded XL-PVDF 150ºC 600 V 30 to 12
18
M81044/13 MM Silver, HSCA Extruded XL-PVDF 150ºC 600 V 30 to 20
Black Blue Green Red White Blue Green Yellow Brown Red Blue Yellow Red White Blue Green

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