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Product

High-temperature wires & cablesNEMA HP 4 & UL 758250–1,000 V · 200 °CExtruded FEP

FEP High-Temperature Hook-Up Wire (NEMA HP 4 & UL 1330 / 1332 / 10203)250–1,000 V 200 °C melt-extruded FEP appliance, heater & panel hook-up wire

Q: How do NEMA HP 4 Types KT, K and KK differ from UL AWM Styles 1332, 1330 and 10203?

NEMA HP 4 (formerly MIL-W-16878) defines military/instrumentation thin-wall Type KT (250 V, 0.15 mm wall), medium-wall Type K (600 V, 0.25 mm wall) and thick-wall Type KK (1,000 V, 0.38 mm wall), rated 150 °C with tin-plated copper or 200 °C with silver/nickel-plated copper. UL 758 defines commercial appliance hook-up styles with heavier insulation walls rated 200 °C: Style 1332 (300 Vac, 0.33 mm wall), Style 1330 (600 Vac, 0.51 mm wall) and Style 10203 (1,000 Vac, 0.51 mm wall).

Q: When should I choose extruded FEP instead of PTFE or PFA hook-up wire?

Choose FEP when your operating temperature is ≤ 200 °C and you need long, continuous, splice-free melt-extruded spool lengths at lower cost than PTFE or PFA. If continuous temperatures reach 250–260 °C or soldering-iron contact resistance is critical, select PTFE (NEMA HP 3) or PFA (UL 11905, 300 °C).

Q: Why does NEMA HP 4 state 150 °C or 200 °C depending on conductor finish?

Tin plating begins to form brittle copper-tin intermetallics above 150 °C under MIL/NEMA aerospace rules, so tin-plated NEMA HP 4 wires are rated 150 °C while silver- or nickel-plated conductors unlock the full 200 °C thermal limit of FEP.

Q: What is the minimum bending radius for FEP hook-up wire?

The recommended minimum bending radius is 6 × overall wire diameter for fixed cabinet/appliance routing and 10 × overall diameter where flexing occurs.

High-temperature single-core hook-up wire with melt-extruded FEP insulation across ANSI/NEMA HP 4 Types KT (250 V), K (600 V), KK (1,000 V) and UL 758 AWM Styles 1332 (300 Vac), 1330 (600 Vac) and 10203 (1,000 Vac) up to +200 °C.

Flame-retardant

Oil-resistant

Outdoor & humid

Approved

Preview configuration

Order designation: NEMA HP 4 Type K · 20 AWG
Nominal OD: 1.47 mm
FEP wall: 0.25 mm
Mass ≈: 7.4 kg/km
Max. DC res.: 32.3 Ω/km

Check against my drum All sizes (17)

Request a quote Datasheet WhatsApp

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Max. operating T: +200 °C
Voltage classes: 250–1,000 V
Insulation: Extruded FEP
AWG range: 32–4/0 AWG
Flammability: UL VW-1 / FT1
Min. bend radius: 6 × OD / 10 × OD

Typical values for this cable type, based on ANSI/NEMA HP 4 & UL 758 — confirmed in the datasheet and quotation for your order.

Application fit

Is FEP Hook-Up Wire (NEMA HP 4 / UL) right for your machine?

FEP fluoropolymer hook-up wire for -65 °C to +200 °C internal cabinet harnesses, thermal appliances, medical sterilisers and chemical instrumentation.

Furnace, kiln & high-temp zone

Suitable

Reliable up to +200 °C in curing ovens, heater banks, soldering equipment and hot-zone sensors.

Switchgear & control cabinet wiring

Suitable

Low-friction, small-OD hook-up wire for dense control panels, switchgear and appliance harnesses.

Motor stator, traction & converter leads

With conditions

Usable for protected motor, transformer and coil leads within +200 °C class limits.

Energy chain / drag chain

Not suitable

Not engineered for continuous repetitive drag-chain flexing.

Use (N)12YRD11Y PUR Chain

Trailing & towing

Not suitable

No heavy mechanical outer sheath for mobile trailing or floor abrasion.

Use H07RN-F Rubber

Typical machinesCommercial ovens, heaters & ignitersControl panels & switchgear internal wiringMedical & laboratory sterilisersChemical & analytical instrumentationHigh-temperature lighting luminairesSemiconductor wet-bench equipment

Construction

Layer by layer

A solid or concentric-stranded copper conductor—tin-, silver- or nickel-plated per style—is insulated with a uniform melt-extruded wall of fluorinated ethylene propylene (FEP) in thin-wall (0.15 mm Type KT), medium-wall (0.25 mm Type K / 0.33 mm UL 1332), thick-wall (0.38 mm Type KK) or heavy-wall (0.51 mm UL 1330 / UL 10203) geometry.

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Annealed copper conductor core	Solid or concentric-stranded high-conductivity annealed copper (32 AWG to 4/0 AWG)ANSI/NEMA HP 4 & UL 758
2	Tin, silver or nickel plating barrier	Electrolytic tin (150 °C), silver (200 °C) or nickel (200 °C) coating per ASTM B33 / B298 / B355 preventing copper oxidationANSI/NEMA HP 4-2021
3	Extruded FEP insulation	Melt-extruded fluorinated ethylene propylene (FEP), 0.15 to 0.51 mm radial wall by voltage/style classNEMA HP 4 / UL 758

NEMA HP 4 Type KT / K / KK

250 V thin-wall KT (32–20 AWG) · 600 V medium-wall K (32–8 AWG) · 1,000 V thick-wall KK (32–4/0 AWG) · 150 °C (tin) or 200 °C (silver/nickel)

UL AWM Style 1332 (300 Vac) & Style 1330 (600 Vac)

200 °C extruded FEP appliance wire: Style 1332 (0.33 mm wall, 30–10 AWG) and Style 1330 (0.51 mm wall, 30–4/0 AWG)

UL AWM Style 10203 (1,000 Vac)

1,000 Vac heavy-wall extruded FEP wire (30–4/0 AWG) for 150 °C or 200 °C internal equipment wiring

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on ANSI/NEMA HP 4 & UL 758. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage by style: 250 V RMS (NEMA HP 4 Type KT) · 300 Vac (UL 1332) · 600 V (NEMA HP 4 Type K & UL 1330) · 1,000 V (NEMA HP 4 Type KK & UL 10203)
Dielectric constant & test voltage: Dielectric constant ~2.1 (1 kHz–1 GHz) · ≥ 1.5 kV (KT/1332), ≥ 2.0 kV (K/1330), ≥ 3.0 kV (KK/10203) AC dielectric test
Conductor & plating options: Solid or concentric-stranded copper: tin-plated (up to 150 °C in NEMA HP 4; 200 °C in UL 1330/1332), silver-plated or nickel-plated (200 °C)

Thermal

Operating temperature range: −70 °C to +200 °C continuous (UL 1330, UL 1332, UL 10203 & silver/nickel NEMA HP 4; +150 °C for tin-plated NEMA HP 4)
Continuous melt-extrusion advantage: Thermoplastic melt-extruded FEP enables long splice-free spool lengths up to +200 °C

Mechanical

Nominal FEP wall thickness by style: Type KT: 0.006 in (0.15 mm) thin wall · Type K: 0.010 in (0.25 mm) medium wall · Type KK: 0.015 in (0.38 mm) thick wall · UL 1332: 0.013 in (0.33 mm) · UL 1330 / 10203: 0.020 in (0.51 mm) heavy wall
Minimum bending radius: 6 × OD fixed; 10 × OD flexing

Resistance

Flame & chemical resistance: UL VW-1 vertical flame retardant; chemically inert to acids, alkalis, solvents, fuels, hydraulic oils and moisture
Moisture & UV weatherability: Water absorption < 0.01%; immune to UV, ozone, fungi and outdoor weathering

Reference standards

Applicable standards: ANSI/NEMA HP 4-2021 (Types KT, K, KK; ex MIL-W-16878/11, /12, /13); UL 758 AWM Styles 1330, 1332, 10203
Environmental compliance: RoHS & REACH compliant fluoropolymer insulation system

Identification

Available NEMA & UL styles: 6 standard style routes: NEMA HP 4 Type KT (250 V), UL 1332 (300 V), NEMA HP 4 Type K (600 V), UL 1330 (600 V), NEMA HP 4 Type KK (1,000 V), UL 10203 (1,000 V)
Standard insulation colours: 10 standard solid colours (Black, White, Red, Blue, Yellow, Green, Brown, Orange, Violet, Grey) plus Green/Yellow

Sizes

17 representative configurations across NEMA HP 4 (Types KT, K, KK) & UL 758 (Styles 1332, 1330, 10203)

Nominal conductor stranding, extruded FEP wall thickness, overall diameter, mass and DC resistance.

Dimensions, voltage & electrical
Style · AWG size	Rated voltage	Temp. rating	Stranding (count/AWG)	CSA ≈ mm²	Cond. Ø mm	FEP wall mm	Nominal OD mm	Mass ≈ kg/km	Max. DC res. (20 °C) Ω/km
ANSI/NEMA HP 4-2021 · Types KT (250 V), K (600 V) & KK (1,000 V)
NEMA HP 4 Type KT · 28 AWG	250 V	150/200 °C	7/36	0.089	0.38	0.15	0.69	1.3	213.0
NEMA HP 4 Type KT · 24 AWG	250 V	150/200 °C	19/36	0.241	0.61	0.15	0.91	2.9	84.0
NEMA HP 4 Type KT · 20 AWG	250 V	150/200 °C	19/32	0.616	0.97	0.15	1.27	6.5	32.3
NEMA HP 4 Type K · 24 AWG	600 V	150/200 °C	19/36	0.241	0.61	0.25	1.12	3.6	84.0
NEMA HP 4 Type K · 22 AWG	600 V	150/200 °C	19/34	0.382	0.76	0.25	1.27	5.1	52.5
NEMA HP 4 Type K · 20 AWG	600 V	150/200 °C	19/32	0.616	0.97	0.25	1.47	7.4	32.3
NEMA HP 4 Type K · 16 AWG	600 V	150/200 °C	19/29	1.23	1.37	0.25	1.96	14.1	15.8
NEMA HP 4 Type K · 12 AWG	600 V	150/200 °C	19/25	3.08	2.18	0.25	2.74	31.8	6.3
NEMA HP 4 Type KK · 20 AWG	1,000 V	150/200 °C	19/32	0.616	0.97	0.38	1.73	9.1	32.3
NEMA HP 4 Type KK · 14 AWG	1,000 V	150/200 °C	19/27	1.94	1.70	0.38	2.46	22.8	9.9
UL 758 AWM · Style 1332 (300 Vac), Style 1330 (600 Vac) & Style 10203 (1,000 Vac)
UL AWM 1332 · 24 AWG	300 Vac	200 °C	7/32	0.22	0.61	0.33	1.27	4.0	89.4
UL AWM 1332 · 20 AWG	300 Vac	200 °C	7/28	0.56	0.97	0.33	1.63	8.0	35.2
UL AWM 1332 · 16 AWG	300 Vac	200 °C	19/29	1.23	1.50	0.33	2.16	15.5	15.8
UL AWM 1330 · 20 AWG	600 Vac	200 °C	7/28	0.56	0.97	0.51	1.98	10.6	35.2
UL AWM 1330 · 16 AWG	600 Vac	200 °C	19/29	1.23	1.50	0.51	2.51	18.8	15.8
UL AWM 1330 · 12 AWG	600 Vac	200 °C	19/25	3.08	2.36	0.51	3.38	37.5	6.3
UL AWM 10203 · 10 AWG	1,000 Vac	200 °C	37/26	4.74	2.95	0.51	3.96	55.2	4.1

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Additional gauges from 32 AWG up to 4/0 AWG and solid-conductor variants are manufactured to order across all six NEMA HP 4 and UL 758 style routes.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Cable sizeDrum core diameter (mm)

Cable length on drum (m)

Enter your drum core diameterMinimum for this size is about 18 mm

Minimum bending radius: 9 mm
Min. drum core diameter: ≈ 18 mm
Cable weight on drum: 0.7 kg
Outer diameter: 1.5 mm

Indicative only: based on the datasheet outer diameter and 6 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
AC dielectric & in-line spark test	100% spark test and dielectric voltage withstand per NEMA HP 4 (1.5–3.0 kV) and UL 758	Every spool
Conductor DC resistance check	Verified at 20 °C per ASTM / NEMA HP 4 conductor class	Every spool
Sample tests
UL VW-1 vertical flame test	Self-extinguishing fluoropolymer flame test per UL 758 / UL 1581 VW-1	Production lot
Thermal aging & concentricity check	200 °C heat aging and FEP wall concentricity verification	Production lot

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

NEMA HP 4 & UL 758CE · LVDRoHS · REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX · E-file UL AWM STYLE [1330 / 1332 / 10203] · [AWG] · 200°C · [300V / 600V / 1000V] · VW-1

Delivery form: Continuous splice-free spools, reels and barrel packs
Lengths: Standard spool lengths and custom cut-and-stripped leads
Certificate: EN 10204 3.1 inspection certificate with every dispatch
Quote response: Engineering specification and quote within 2 business hours

Technical documents

Downloads

PDFFEP High-Temperature Hook-Up Wire (NEMA HP 4 & UL 1330 / 1332 / 10203) – technical datasheet17 sizes · construction, technical data, approvals XLSXFEP Hook-Up Wire (NEMA HP 4 / UL) spec data (Excel)All 17 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-20
Updated: 2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

How do NEMA HP 4 Types KT, K and KK differ from UL AWM Styles 1332, 1330 and 10203?

NEMA HP 4 (formerly MIL-W-16878) defines military/instrumentation thin-wall Type KT (250 V, 0.15 mm wall), medium-wall Type K (600 V, 0.25 mm wall) and thick-wall Type KK (1,000 V, 0.38 mm wall), rated 150 °C with tin-plated copper or 200 °C with silver/nickel-plated copper. UL 758 defines commercial appliance hook-up styles with heavier insulation walls rated 200 °C: Style 1332 (300 Vac, 0.33 mm wall), Style 1330 (600 Vac, 0.51 mm wall) and Style 10203 (1,000 Vac, 0.51 mm wall).

When should I choose extruded FEP instead of PTFE or PFA hook-up wire?

Choose FEP when your operating temperature is ≤ 200 °C and you need long, continuous, splice-free melt-extruded spool lengths at lower cost than PTFE or PFA. If continuous temperatures reach 250–260 °C or soldering-iron contact resistance is critical, select PTFE (NEMA HP 3) or PFA (UL 11905, 300 °C).

Why does NEMA HP 4 state 150 °C or 200 °C depending on conductor finish?

Tin plating begins to form brittle copper-tin intermetallics above 150 °C under MIL/NEMA aerospace rules, so tin-plated NEMA HP 4 wires are rated 150 °C while silver- or nickel-plated conductors unlock the full 200 °C thermal limit of FEP.

What is the minimum bending radius for FEP hook-up wire?

The recommended minimum bending radius is 6 × overall wire diameter for fixed cabinet/appliance routing and 10 × overall diameter where flexing occurs.

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01Selected sizes

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02Reel & motion

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03Message for our engineers

FEP High Temperature Hook-Up Wire

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Reel & motion:
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