hi
i have 6 MV cables ( 240 sq mm) in one circuit (2 per phase), it was installed in duct bank (PVC pipe in the ground) but the contractor install each phase in one duct (conduit) for example phase A two cables in one conduit also B and C in flat form
therefore, i need to know how can i calculat the derating factor in this case
thanks
i have 6 MV cables ( 240 sq mm) in one circuit (2 per phase), it was installed in duct bank (PVC pipe in the ground) but the contractor install each phase in one duct (conduit) for example phase A two cables in one conduit also B and C in flat form
therefore, i need to know how can i calculat the derating factor in this case
thanks
