In most cases PVC cable insulations must have an oxygen index of
at least 27% O2. The cable insulation formulation in the table below
results in a LOI value of 27% O2. Instead of lead stabilizers, Ca/Zn based
systems are more frequently used today, in general with co-stabilizers.
The addition of about 3-6 phr of Zinc Borate can be helpful to
reduce dripping in order to pass higher standards such as DIN 4102 part 12.
