XLPE & PVC insulated wires are used across industries in critical applications. Both materials offer some advantages like chemical and heat resistance. However, the level of resistance varies. For example, XLPE can withstand much higher temperatures than PVC.
PVC Cable 75 deg C
XLPE Cable 90 deg C
Fired-Rated 110 deg C
MIMS 100 deg C
Dekoron
RG58