Choosing type of cable
| Type of cable | Switched on | Switched off |
| SELF-LIMITING SRL SRM |
65°C 120°C |
85°C 190°c |
| PARALLEL RESISTIVE CWM |
120°C | 200°C |
| SERIES RESISTIVE/TEFLON INSULATED TCT/TCTR |
Depending on load | 200°C |
| MINERAL INSULATED COPPER COPPER-NICKEL ROSTFRI* |
Depending on load Depending on load Depending on load |
250°C 450°C 600°c |
* In environments saturated with salt can stainless cables corrode with short-circuiting as a result.
Example
| Environment | = | Exposed to moisture |
| Voltage | = | 230 V |
| Pipe material | = | Metallic |
| Tp | = | 65°C |
| Toperation | = | 40°C |
| Required power | = | 10 W/m |
- Both temperatures are below the maximum temperature data for all cable types (all cable types can be used).
- SRL -5- gives 10 W/m at 40°C.
- EST/CWM 12-4 gives 10 W/m cable at 230V
- Series resistive cables, see choosing cable type
If required running meter output not can be obtained
Possible steps:
- Coil or lay several runs with cables.
- Increase the thickness of the insulation or choose insulation with better k-value.
- Choose any of our miscellaneous heating products (for example silicone element or nozzle heaters)