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My exams been moved forward to tomorrow and this is the only question im not 100% on!
1: A single phase load of 30A is supplied by 6mm2 single core 70oC thermoplastic pcv cables in conduit and trunking. If the cable is 24 metres long calculate the circuit voltage drop
2: if the above cable is subjected to a fault current of 125A which causes disconnection in 5 seconds, what is the minimum size cpc which could be used
1: Using the tables from the 17th ed ap 4, i worked out VD to be 5.26....
2: Adiabatic equation? Or is there just a table, my answer im getting in the region of 2590mm which is a chunky cpc!
Any help would be great, exam is in 20 hours !
1: A single phase load of 30A is supplied by 6mm2 single core 70oC thermoplastic pcv cables in conduit and trunking. If the cable is 24 metres long calculate the circuit voltage drop
2: if the above cable is subjected to a fault current of 125A which causes disconnection in 5 seconds, what is the minimum size cpc which could be used
1: Using the tables from the 17th ed ap 4, i worked out VD to be 5.26....
2: Adiabatic equation? Or is there just a table, my answer im getting in the region of 2590mm which is a chunky cpc!
Any help would be great, exam is in 20 hours !