Heat-resistant electric wire series

Heat-resistant electric wire series

How to select electric wires (approximate)

For the heater lead wires and electric wires used for electric heating equipment,etc., those compliant with the ratings used, operating temperature, and publicstandard certification should be selected.
We provide a large number of compatible electric wires corresponding to various Normal product fields.

Heat-resistant electric wire series

Note on terminal processing of heat-resistant electric wire

When connecting the heat-resistant wire to the heater or the terminal of equipment, perform terminal treatment of the heat-resistant wire using a proper crimp terminal, etc. and secure it completelywith screws or welding, etc.
Particularly when using it in a high-temperature atmosphere, be careful that the contact resistance increases due to oxidation of the surface of the contact part, causing abnormal heat generation and leading to damage to the equipment or fire.

Specification

GG wire

External view

GG wire

Specifications

Conductor Tin plated copper wire
Insulator Silicone rubber
Glass single braid
Safe operating temperature 180°C

We have a lineup of the above types of heat-resistant electric wires. Select according to the application, conditions of use, etc.
Heat-resistant electric wires other than the above are also available.

Standard Product

Conductor configuration Outer diameter
(approx.)
Insulator thickness Braid thickness Standard finished outer diameter
(approx.)
Conductor resistance (Standard: 20°C) Insulation resistance (Minimum: 20°C) Test voltage (AC) Allowable current
Cross-sectional area Number/strand diameter
0.5mm2 20/0.18mm 0.9mm 0.3mm 0.2mm 1.9mm 38.6Ω/km 100MΩ/km 1500V/min 4A
0.75mm2 30/0.18mm 1.1mm 0.4mm 0.2mm 2.4mm 25.8Ω/km 100MΩ/km 1500V/min 8A
1.25mm2 50/0.18mm 2.5mm 0.4mm 0.2mm 2.7mm 15.5Ω/km 100MΩ/km 1500V/min 11A
2mm2 37/0.26mm 1.8mm 0.5mm 0.2mm 3.2mm 9.91Ω/km 100MΩ/km 1500V/min 14A
3.5mm2 45/0.32mm 2.5mm 0.6mm 0.25mm 4.2mm 5.38Ω/km 100MΩ/km 1500V/min 21A
5.5mm2 35/0.45mm 3.1mm 0.6mm 0.25mm 4.8mm 3.46Ω/km 90MΩ/km 1500V/min 28A
8mm2 50/0.45mm 3.7mm 0.8mm 0.25mm 5.8mm 2.45Ω/km 80MΩ/km 1500V/min 42A

The allowable current is a reference value of tin-plated soft copper wire (up to 150°C). It varies depending on the operating conditions.
For details, contact our sales representative.

GG wire(2-core type)

External view

GG wire(2-core type)

Specifications

Conductor Tin plated copper wire
Insulator Silicone rubber
Glass single braid
Parallel single braid
Safe operating temperature 180°C

We have a lineup of the above types of heat-resistant electric wires. Select according to the application, conditions of use, etc.
Heat-resistant electric wires other than the above are also available.

Standard Product

Conductor configuration Outer diameter
(approx.)
Insulator thickness Braid thickness Standard finished outer diameter
(approx.)
Conductor resistance (Standard: 20°C) Insulation resistance (Minimum: 20°C) Test voltage (AC) Allowable current
Cross-sectional area Number/strand diameter
0.75mm2 30/0.18mm 1.1mm 0.4mm 0.25mm 3.1×4.9mm 25.8Ω/km 100MΩ/km 1500V/min 5A
1.25mm2 50/0.18mm 1.5mm 0.4mm 0.25mm 3.5×5.8mm 15.5Ω/km 100MΩ/km 1500V/min 7A
2mm2 37/0.26mm 1.8mm 0.5mm 0.3mm 4.3×7.0mm 9.91Ω/km 100MΩ/km 1500V/min 9A

The allowable current is a reference value of tin-plated soft copper wire (up to 150°C). It varies depending on the operating conditions.
For details, contact our sales representative.

LKGB wire

External view

LKGB wire

Specifications

Conductor Tin plated copper wire
Insulator Silicone rubber
Glass double braid
Safe operating temperature 180°C

We have a lineup of the above types of heat-resistant electric wires. Select according to the application, conditions of use, etc.
Heat-resistant electric wires other than the above are also available.

Standard Product

Conductor configuration Outer diameter
(approx.)
Insulator thickness Braid thickness Standard finished outer diameter
(approx.)
Conductor resistance (Standard: 20°C) Insulation resistance (Minimum: 20°C) Test voltage (AC) Allowable current
Cross-sectional area Number/strand diameter
0.75mm2 30/0.18mm 1.1mm 1.1mm 0.5mm 4.3mm 25.8Ω/km 100MΩ/km 1500V/min 8A
1.25mm2 50/0.18mm 1.5mm 1.1mm 0.5mm 4.7mm 15.5Ω/km 100MΩ/km 1500V/min 11A
2mm2 37/0.26mm 1.8mm 1.1mm 0.5mm 5mm 9.91Ω/km 100MΩ/km 1500V/min 14A
3.5mm2 45/0.32mm 2.5mm 1.1mm 0.5mm 5.7mm 5.38Ω/km 100MΩ/km 1500V/min 21A
5.5mm2 35/0.45mm 3.1mm 1.1mm 0.5mm 6.3mm 3.46Ω/km 90MΩ/km 1500V/min 28A
8mm2 50/0.45mm 3.7mm 1.1mm 0.5mm 6.9mm 2.45Ω/km 80MΩ/km 1500V/min 42A
*14.0mm2 88/0.45mm 4.9mm 1.1mm 0.6mm 8.3mm 1.39Ω/km 60MΩ/km 2000V/min 63A
*22.0mm2 7/20/0.45mm 7mm 1.4mm 0.6mm 11mm 0.892Ω/km 60MΩ/km 2000V/min 85A
*30.0mm2 7/27/0.45mm 8.1mm 1.4mm 0.6mm 12.1mm 0.661Ω/km 60MΩ/km 2000V/min 139A
*38.0mm2 7/34/0.45mm 9.1mm 1.4mm 0.6mm 13.1mm 0.525Ω/km 50MΩ/km 2500V/min 162A

The allowable current is a reference value of tin-plated soft copper wire (up to 150°C). It varies depending on the operating conditions.
For details, contact our sales representative.

* is made to order. For the minimum lot, etc., contact our sales representative.

Fluororesin electric wire

External view

Fluororesin electric wire

Specifications

Conductor Tin plated copper wire
Insulator FEP-6F
Safe operating temperature 200°C

We have a lineup of the above types of heat-resistant electric wires. Select according to the application, conditions of use, etc.
Heat-resistant electric wires other than the above are also available.

Standard Product

Conductor configuration Outer diameter
(approx.)
Insulator thickness Braid thickness Standard finished outer diameter
(approx.)
Conductor resistance (Standard: 20°C) Insulation resistance (Minimum: 20°C) Test voltage (AC) Allowable current
Cross-sectional area Number/strand diameter
0.5mm2 19/0.18mm 0.9mm 0.25mm –mm 1.4mm 40.6Ω/km 1500MΩ/km 2000V/min 4A
0.75mm2 30/0.18mm 1.15mm 0.3mm –mm 1.75mm 25.8Ω/km 1500MΩ/km 2000V/min 8A
1.25mm2 50/0.18mm 1.48mm 0.3mm –mm 2.08mm 15.5Ω/km 1500MΩ/km 2000V/min 11A
2mm2 37/0.26mm 1.8mm 0.3mm –mm 2.4mm 9.91Ω/km 1500MΩ/km 2000V/min 14A
3.5mm2 45/0.32mm 2.5mm 0.3mm –mm 3.1mm 5.37Ω/km 1500MΩ/km 2000V/min 21A
5.5mm2 35/0.45mm 3.1mm 0.3mm –mm 3.7mm 3.5Ω/km 1500MΩ/km 2000V/min 28A

The allowable current is a reference value of tin-plated soft copper wire (up to 150°C). It varies depending on the operating conditions.
For details, contact our sales representative.

MKT wire

External view

MKT wire

Specifications

Conductor Pure nickel wire
Insulator Mica double winding
Polyimide tape
Silica glass
winding braid
Safe operating temperature 400°C

We have a lineup of the above types of heat-resistant electric wires. Select according to the application, conditions of use, etc.
Heat-resistant electric wires other than the above are also available.

Standard Product

Conductor configuration Outer diameter
(approx.)
Insulator thickness Braid thickness Standard finished outer diameter
(approx.)
Conductor resistance (Standard: 20°C) Insulation resistance (Minimum: 20°C) Test voltage (AC) Allowable current
Cross-sectional area Number/strand diameter
0.75mm2 30/0.18mm 1.1mm 0.55mm 0.25mm 2.7mm 120Ω/km 10MΩ/km 2000V/min 2A
1.25mm2 50/0.18mm 1.5mm 0.55mm 0.35mm 3.3mm 72Ω/km 10MΩ/km 2000V/min 3.4A
2mm2 37/0.26mm 1.8mm 0.55mm 0.35mm 3.6mm 45Ω/km 10MΩ/km 2000V/min 5.7A
3.5mm2 45/0.32mm 2.5mm 0.55mm 0.45mm 4.5mm 25.7Ω/km 10MΩ/km 2000V/min 10A
5.5mm2 35/0.45mm 3.1mm 0.55mm 0.5mm 5.2mm 16.4Ω/km 10MΩ/km 2000V/min 15A
8.0mm2 7/7/0.45mm 3.7mm 0.55mm 0.5mm 5.8mm 11.3Ω/km 10MΩ/km 2000V/min 22A

The allowable current is a reference value of nickel wire (up to 400°C). It varies depending on the operating conditions. For details, contact our sales representative.

CF wire

External view

CF wire

Specifications

Conductor Nickel plated copper wire (28NPC)
Insulator Ceramic felt
Silica yarn
Alumina-based paint
Safe operating temperature 400°C

We have a lineup of the above types of heat-resistant electric wires. Select according to the application, conditions of use, etc.
Heat-resistant electric wires other than the above are also available.

Standard Product

Conductor configuration Outer diameter
(approx.)
Standard finished outer diameter
(approx.)
Conductor resistance (Standard: 20°C) Insulation resistance (Minimum: 20°C) Test voltage (AC) Allowable current
Cross-sectional area Number/strand diameter
0.3mm2 12/0.18mm 0.7mm 1.8mm±15% 74Ω/km 1MΩ/km 1000V/min 2.4A
0.5mm2 20/0.18mm 0.9mm 2.2mm±15% 44.4Ω/km 1MΩ/km 1000V/min 4.2A
0.75mm2 30/0.18mm 1.1mm 2.4mm±15% 29.6Ω/km 1MΩ/km 1000V/min 6A
1.25mm2 50/0.18mm 1.5mm 2.8mm±15% 17.8Ω/km 1MΩ/km 1000V/min 10A
2mm2 37/0.26mm 1.8mm 3.3mm±15% 11.1Ω/km 1MΩ/km 1000V/min 16A
3.5mm2 66/0.26mm 2.4mm 4.1mm±15% 6.3Ω/km 1MΩ/km 1000V/min 27A

The allowable current is a reference value of nickel plated copper wire (28NPC) (up to 400°C). It varies depending on the operating conditions. For details, contact our sales representative.

Reference material

Allowable current value of heat-resistant electric wire

  1. Allowable current value of heat-resistant wire varies depending on the usage conditions.
    Especially when using nickel wire, select a wire diameter with sufficient margin because the conductor generates much self heat.
  2. When selecting a heat-resistant cable, ensure that the target quality performance and product safety have been achieved.
  3. When converging wires in the same pipe, note that the current value may decrease as the temperature rises.

The table below lists reference values based on actual measurement results of the conductor resistance of nickel wire and nickel plated copper wire (28 NPC).

Nickel wire (Ni)
Nickel plated copper wire (28 NPC)

Precautions for use

If you wish to use under the following conditions, please consult our sales representative.

  • Do not use products in locations where they are exposed to water or humidity. It may cause an electric shock, electric leakage, short circuit, or fire.
    Braid insulation and winding insulation by glass fiber, silica glass fiber, or ceramic fiber are not a waterproof structure.
  • Do not use products with overcurrent. It could result in an electric leakage or fire. Use products with a safe current considering the usage method.
    Flowing the same electric current in an electric wire with soft copper as a conductor in heat-resistant electric wires using high-resistance conductors such as nickel, nickel braided copper, titanium, etc., will cause overcurrent, possibly causing an electric leakage or fire.
    If smoke is generated from the insulator or you sense an odor, stop using the product immediately. Continuing to use it as is could result in an electric leakage or fire.
  • Do not use it by repeatedly bending, twisting, pulling, wearing, and receiving vibration.
    It may cause wire breakage or insulation deterioration.
  • Do not touch the electric wire during use, nor bring it into contact with parts and equipment. It may cause burns, or damage the parts and equipment. Depending on the value of the current used or the ambient temperature, the electric wire may generate considerable heat.
    Therefore, there is a risk of burns if part of the human body touches it, and there is also a risk of damaging heat-sensitive parts and equipment.
Inquiry about the products
All products listed are available in different voltages.
Please contact us for a custom designed quote and/or for any questions about our products.