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Installation Instructions 15
1.2.2 Junction Box Installation (If Used)
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Low Voltage (Control) Junction Box:
Width 8 in. (203 mm)
Length 10 in. (245 mm)
Height 4 in. (102 mm)
Main Input (Power) Junction Box:
Width 16 in. (406 mm)
Length 30 in. (762 mm)
Height 6 in. (152 mm)
Wire Size (2) #4 to 500 kcmil
Table 3 Main Input Circuit Breaker Lug Size and Interrupting Rating
OPD
Lug Size
1
(Copper Conductor)
Interrupting Rating
2
208V 480V 380-415V 600V
125 to 250 AMPS #6 AWG-350 kcmil 65 kA 25 kA 25 kA 18 kA
300 to 600 AMPS (2) #2/0 AWG-400 kcmil 65 kA 35 kA 25 kA 25 kA
700 to 800 AMPS (3) #3/0 AWG-500 kcmil 65 kA 50 kA 50 kA 25 kA
1. Applies to units without input junction box.
2. Standard Rating. See Unit's Specification Sheet for other ratings.