Hi all,
Recently I've encountered a bit 16mm 5 core SY cable. (Strangely the earth cable and pin has been burnt/melted at the plug and socket of the extension lead)
Struggling to determine whether this was either a design fault, cable defect or external fault
It appears that the cable is rated for 61.5A with the 0.75 derating factor due to five cores, and at one section of the cable it has been tightly coiled. Assuming that it is fed from a BS-88 fuse it would take 3600s (One hour) to operate.
What point does the cable burn up, how is this calculated? The load current is 75A, would this cause cable damage prior to operation?
Regards