Trane RTHD

62 RTHD-SVX01D-EN
Installation Electrical
the shaft in all handel positions except RESET/OPEN. To open the enclo-
sure door when the breaker is in the ON position, rotate the screw slot
on the handle plate counter -clockwise. Verify operation.
Fused Disconnect Switches
Size fused disconnects in accordance with NEC Article 440-22(a).
Rated Load Amperage (RLA)
The compressor motor RLA for a particular chiller is determined by the field
selection program and indicated on the compressor nameplate.
Minimum Circuit Ampacity (MCA)
The MCA is equal to 1.25 x the compressor RLA (on nameplate).
Table 14 Lug Sizes
RLA Circuit Breaker (copper)
Device Max. Current
Rating
0-200 (1) #6 - 350 MCM 250A
200.1-280 (2) 3/0-500 MCM 350A
280.1-320 (2) 3/0 - 500 MCM 400A
320.1-400 (2) 3/0 - 500 MCM 500A
400.1-476 (2) 3/0 - 500 MCM 600A
476.1-560 (4) 250 - 500 MCM 700A
560.1-640 (4) 250 - 500 MCM 800A
640.1-800 (4) 250 - 500 MCM 1000A
RLA
Non-Fused Disconnect
Switch
207, 277, 300 (2) 3/0 - 500 MCM 400A
360, 397 (2) 3/0 - 500 MCM 600A
476 (2) 3/0 - 500 MCM 600A
598 (2) 3/0 - 500 MCM 800A
500 (2) 3/0 - 500 MCM 800A
779 (4) 250 MCM - 500 MCM 1200A
RLA Main Lugs Only
1-476 (2) #6-500 MCM
760A
500-598 (2) #4-500 MCM
750A