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Is it possible to backfeed or bottom feed a D-line contactor? In other words, can the line wiring be connected to the bottom terminals, and the load connected to the top?

Can you wire the line into the bottom, and load into the top, of a tesys d-line contactor? 
Product Line:
 Tesys D line contactors

Products sold and used in the United States
Identifying acceptable wiring practices
No. D-Line contactors are labeled L1 L2 L3 for the Line conductors, and T1 T2 T3 for the load conductors. They must be wired that way to comply with the listed rating. Per code, L1L2 L3 / T1 T2 T3 marked contactors are top fed only.

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