(M16878) – General Information

The M16878 specification is a catch-all spec for wires with temperature ratings from -65 to 260 degrees Celsius. It is a non-Qualified Products List (QPL) wire, which means anyone can make it. There are a handful of low and high-temperature manufacturers that also manufacture other QPL specifications with similar insulations so this is still a high quality and highly reliable wire. It does not have a wide range of choices and is pretty narrow in offering either PVC, silicone, XLPE or PTFE wires.

The conductor coatings will range from tin and silver to nickel. The M16878 specification is considered to be a high-performance wire and meets requirements for flame retardancy, low flame propagation, low weight, great electricals, and high-temperature resistance. Common voltage ranges of 250 – 5000 volts make this wire ideal for electronic harness applications throughout the Military and Aerospace industry.

Even though the M16878 spec has been replaced by the NEMA HP3 and HP4 specification, all of SEA’s inventory is dual-certified to both specifications. We can ship the product the same day regardless of which specification you need.

You don’t need a decoder ring to figure out the part number scheme. Please see the charts below to break down the M16878, HP3 and HP4 part numbers. There is also additional information on the SEA Wire Wizard.

Table 1

Current SpecPrevious SpecJacketAWGConductor Coating
/1BPVC32-14Tin
/2CPVC26-12Tin
/3DPVC24-0Tin
/4ETFE30-10Silver
/5EETFE26-12Silver
/6ETTFE30-20Silver
/11KFEP24-10Silver
/12KKFEP24-10Silver
/13KTFEP24-20Silver
/21ETFE - W22-12Silver
/22EETFE - W12-4Silver
/23ETTFE30-20Nickel
/25ETFE22-12Nickel
/26ETFE - W22-12Nickel
/27EETFE26-12Nickel
/28EETFE - W12-4Nickel
/34EETFE - W12-4Silver
/35EETFE - W12-4Nickel

Table 2

LetterDescription
ABare copper
BCoated copper
CCoated copper clad steel
DCoated high strength copper alloy
ECoated copper with overall metallic coating

Table 3

AWGLetter
32A
30B
28C
26D
24E
22F
20G
18H
16J
14K
12L
10M
8N
6P
4R
2S
1T
0U
00W
000Y
0000Z

Table 4

Number of StrandsLetter
1A
7B
10C
16D
19E
26F
37G
41H
65J
105K
133L
168M
259N
665P
817R
1045S
1330T
1672V
2109W

Table 5

DesignatorColor
0Black
1Brown
2Red
3Orange
4Yellow
5Green
6Blue
7Violet
8Gray
9White

Note 1

Nema Types:

  • E   (M16878/4)
  • EE   (M16878/5)
  • ET   (M16878/6)

Note 2

  • X = Extruded
  • W = Wrapped

Note 3

  • B = Silver-coated Copper (SCC)
  • C = Nickel-coated Copper (NCC)
  • D = Silver-coated high-strength copper alloy (SCA)
  • E = Nickel-coated high-strength copper alloy (NCA)
  • F = Silver-coated copper clad steel (SCCCS)
  • G = Nickel-coated copper clad steel (NCCCS)

Note 4

AWGLetter
32A
30B
28C
26D
24E
22F
20G
18H
16J
14K
12L
10M
8N
6P
4R
2S
1T
0U
00W
000Y
0000Z

Note 5

Number of StrandsLetter
1A
7B
19E
37G
133L
665P
817R
1045S
1330T
1672V
2109W

Note 6

DesignatorColor
0Black
1Brown
2Red
3Orange
4Yellow
5Green
6Blue
7Violet
8Gray
9White

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