High Temperature Cable Part 1

Type K Thermocouple WireWhen choosing your high temperature cable care must be taken. There are many types of insulation used with varying degrees of thermal resistance and tensile strength. D&N supply such a wide
range we will be separating this blog into two parts. This article will look at our range of PVC, Polyamide and Teflon high temperature cables, and what applications they are suited too.
When selecting a high temperature cable a few factors must be taken into account.


Moisture – If moister is present in your high temperature cable the applied temperature to the hot end may vary due to insulation breakdown at various points along the installation.
Abrasion – Harsh environments that involve movement and vibration often can cause insulation breakdown resulting in shorts. It is highly recommended to use double insulation and armoured cable in the environments.
Flexing – Continual movement to a cable can cause it to fracture within its insulation, a multi core cable is best suited to these types of environments.
Chemical & Abrasive attacks – The insulation chosen should reflect the environment and of spray from the machinery around the cable. In heavy chemical environments it is recommended that compensating cables be housed in ducting of some form.
Thermal resistance – Temperature extremes are the common cause of failure. Insulation’s are specified and rated for maximum continues use.

Types of High Temperature Cable

The type of Insulation you use in your high temperature cable will relay completely on the application you wish it to perform.

Type K Cable Single Sheath PVCPVC Insulated Figure Eight
The figure eight or ripcord constructed PVC is generally regarded as the standard and most economical high temperature cable. This cable is available in single strand and multiple stranded versions. For an additional abrasion resistance an optional stainless steel over braid is available. With a continuous temperature range of -30°C to 105°C, the application areas for this cable are:
• Laboratories
• Automotive
• Heating and air conditioning
• Low temperature environments

PVC PVC Thermocouple Type K cablePVC double insulated
The DOUBLE INSULATED or PVC / PVC cable is a pair of solid or stranded conductors covered with PVC laid flat and PVC sheathed. This cable is available in single strand and multiple stranded versions.
• Solid 20 AWG
• Solid 16 AWG
• Stranded 7/32 AWG
• Stranded 14/32 AWG
On request 24,32 and 40 strand cable is available.
For an additional abrasion resistance an optional stainless steel over braid is available.
With a continuous temperature range of -30°C to 105°C, the application areas for this cable are:
• Laboratories
• Automotive
• Heating and air conditioning
• Low temperature environments.
cable-kpot-1

Polyamide double insulated
The DOUBLE INSULATED POLYAMIDE or (KK) are pair of solid or stranded conductors covered with Polyamide laid flat and Polyamide sheathed. This cable is available in single strand and multiple stranded versions.
• Solid 24 AWG
• Solid 20 AWG
• Stranded 7/32 AWG
• Stranded 7/28 AWG
On request 30 AWG solid cable is available.
For an additional abrasion resistance an optional stainless steel over braid is available. The continuous temperature range for this cable is -30°C to 315°C but for a higher heat environment you can add a fibreglass sheath.

The application areas for this cable are:
• Petroleum Plants
• Electric Power Plants
• Kilns, Glass, Ceramic Brick Manufacturing
• Aero Space Industry
• High chemical mid temperature Applications


cable-rtd-teflon-1Teflon Double Insulated

The DOUBLE INSULATED TEFLON or TEFLON / TEFLON cable are a pair of solid or stranded conductors covered with Teflon laid flat and Teflon sheathed. This cable can also be called
Teflon – FEP. As this cable is extruded it is capable of withstanding applications were steam, gas, and water are found. This cable is available in single strand and multiple stranded versions.
• Solid 24 AWG
• Solid 20 AWG
• Stranded 7/32 AWG
• Stranded 14/32 AWG
On request 30 AWG solid cable is available.
For an additional abrasion resistance an optional stainless steel over braid is available.
With a continuous temperature range of -80°C to 220°C, the application areas for this cable are:
• Chemical environments Laboratories
• Petrochemical installations
• Autoclaves sterilises
• Mid temperature wet environments.

That’s all for part 1 of our high temperature cable blog. Next post we will look at our wide range of fibreglass cables. Can’t wait that long? Head over to our products page for more information on all our cables including detailed information on moisture, chemical and abrasion performance.
If you need any assistance selecting the right cable for your project, contact our sales team.