The gross heat of combustion value (or energy value or calorific value) is used to quantify the energy content of a cable in case of a fire.

The standard gross heat of combustion is the energy liberated when a substance undergoes complete combustion with oxygen at standard conditions (25°C and 1 bar). In thermodynamical terms it is the negative of the enthalpy change for the combustion reaction.The chemical reaction is typically a hydrocarbon or other organic molecule reacting with oxygen to form carbon dioxide and water and release heat.It can be calculated from the standard enthalpy of formation (ΔHf°) of the substances involved in the reaction, given as tabulated values.The gross heat of combustion is measured in a calibrated oxygen bomb calorimeter. It is usually utilized to quantify the performance of a fuel in a combustion system.

The sources are:

Note: Not all values listed below can be selected in the cable editor.

Symbol
$\Delta H_{\mathrm{c}}$
Unit
MJ/kg
Related
$H_{\mathrm{c}}$
$M_{\mathrm{cable}}$
Used in
$H_{\mathrm{c}}$
Choices
IdValueReference values
PVC18.017.95-20.0
PE44.644.6-47.7
LDPE44.644.6-47.74
MDPE46.444.6-47.74
HDPE47.7444.6-47.74
XLPE44.644.6-47.74
XLPEf47.7444.6-47.74
PP45.845.8-46.0
PPLP40.950/50% paper/PP, paper 50% soaked oil/rosin
PUR31.6
PS42.041.6-43.65
PA31.431.4-33.0
STPe32.632.6-33.9
POC33.533.5-46.05
ETFE13.8
PET24.1321.6-24.13
PTFE5.0
HFFR20.015.0-25.0
FRNC13.0
NR43.143.1-45.0
EPR30.025.0-33.9
EPDM30.0≈EPR
EVA22.0
CR23.719.5-23.7
CSM15.4
IIR43.8
PIB47.0
Oil35.04paper 50% soaked with mineral oil (38.07)
Mass36.0paper 50% soaked with oil/rosin (ca. 40)
CJ34.2860% jute + 40% PP
RSP43.8IIR
BIT40.95Bitumen
tape20.0estimation
SiR15.515.5-22.6
FPOC16.7550% of POC
FPP22.950% of PP
PR15.280% of PVC
PT15.280% of PVC
Jute17.017.0-20.0
TY18.017.0-20.0
Paper16.0
Air8.9