Recent content by EE_HV

Thank you for the answer Averagesupernova. I think the method you describe is along the lines of what IEC 60287 calculations do. I would think that manufacturers also do experiments to confirm their calculations. It is that part that I want to learn more about: how do they conduct their...

right, a fire would be a bad sign :wink: seriously: I want to avoid a rule-of-thumb where I just add a certain percentage to have a margin of safety. How do the cable manufacturers determine the ampacity, other than the above mentioned IEC standards and related calculations? They...

Ampacity from a manufacturer is normally determined at a rather low temperature, and no airflow. So those numbers are not helpful, unless a derating table for temperature and airflow would be provided. It is not that we are far out from normal usage, but rather that it is a dynamic situation...

MatlabDude, thanks for the response. I have contacted the manufacturer (Champlain cable), and the information will give me an idea of the expected ampacity, but the information they have will not take into account the actual operating conditions. That is why I want to conduct a subsystem test...

Hello, My online research has revealed international standards to calculate steady state ampacity of power cables (e.g. IEC 60287), as well as some software programs (Lineamps) and FEA calculations to predict thermal resistance and ampacity of power cables. My question is how to...