Here's the scenario:
100' of 10/5 SOOW ending in an L21-30C. L21-30P--12" of 10/3 SOOW--*--L6-30C adaptor. L6-30P--10' of 12/3 SJOOW--2500W HMI followspot.
After a few hours of operation, I felt all along the length of the cable that I could reach. Near the female L6-30, at the point of the asterisk above, the cable was hot, not warm, hot; too hot to hold comfortably. Swapped out the adapter and things were better. The new adapter got warm, but not hot. Neither the 10/5 nor the 12/3 seemed above ambient with either the old or new adapters.
Why did the 12" of 10/3 get hot before the 10/5 or 12/3?
How is 12/3 SJOOW permitted on a luminaire that draws "up to 30A (200-240V)" according to the manufacturer?
100' of 10/5 SOOW ending in an L21-30C. L21-30P--12" of 10/3 SOOW--*--L6-30C adaptor. L6-30P--10' of 12/3 SJOOW--2500W HMI followspot.
After a few hours of operation, I felt all along the length of the cable that I could reach. Near the female L6-30, at the point of the asterisk above, the cable was hot, not warm, hot; too hot to hold comfortably. Swapped out the adapter and things were better. The new adapter got warm, but not hot. Neither the 10/5 nor the 12/3 seemed above ambient with either the old or new adapters.
Why did the 12" of 10/3 get hot before the 10/5 or 12/3?
How is 12/3 SJOOW permitted on a luminaire that draws "up to 30A (200-240V)" according to the manufacturer?