WorthFlorida
Clinical Trail on a Cancer Drug Started 1/31/24. ☹
I'm doing wiring job in my garage to add one outlet for a refrigerator (17 Cu Ft) and a ceiling outlet for 2 LED shop lights at 35 watts each. Today, I ran 4 conductors (THHN) inside a 3/8" FMC and it was quite a chore. One of each, Grn, Wht, Blk, Red. The FMC is only about 6 ft long from a wire mold channel to a 4" octagon juncture box. The refrigerator will be on its own 15 amp breaker (red wire) and the ceiling outlet (about 9 ft off the garage floor) will be a switch circuit from a recently added breaker for extra outlets over the work bench.
Question: The chart below reads 3 or 4 conductors depending on internal or external connectors. What is defined as internal or external connectors?