Values for maximum conductor temperature depending on the insulation material for normal operation, under emergency overload operation (max 8 hours/day and 100 hours/year) and during short-circuit are according to IEC 60840 Ed.4.0 and IEC 62087 Ed.2.0 where available with the following additions:

The IEC 60724 defines the short-circuit temperature limit of PVC at 160°C for cables with cross-section ≤300mm² and at 140°C for cables with cross-section >300mm²

Symbol
$\theta_{\mathrm{cmax}}$
Unit
°C
Related
$M_{\mathrm{i}}$
$\theta_{\mathrm{cmaxeo}}$
$\theta_{\mathrm{cmaxsc}}$
$\theta_{\mathrm{kf}}$
Used in
$\Delta \theta_{\mathrm{max}}$
$\Delta \theta_{\mathrm{R_{\mathrm{\infty}}}}$
$\Delta \theta_{\mathrm{t_{\mathrm{\infty}}}}$
$\Delta W_{\mathrm{0}}$
$I_{\mathrm{c}}$
Choices
Material
 
Normal
operation
Emergency
overload
Short-
circuit
PE7080130
HDPE8080160
XLPE90130250
XLPEf90130250
PVC7590160
EPR90110250
IIR85110250
PPLP7070130
Mass8095150
Oil8095150
PP8095150
SiR100180225
EVA100140180
ETFE110180230
FEP110210260
PTFE110260305
PFA110260290