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7. TECHNICAL SPECIFICATIONS
Table 3 – Recommended Wire Size
kVA Rating
Input/Output
Ground
300
(2) 350kcmil
1/0 AWG
400
(3) 300kcmil
3/0 AWG
500
(3) 300kcmil
3/0 AWG
*Wire must be rated 75°C or higher
Table 4 - Terminal Tightening Torques
Power Terminal Torque
Bolt Size
Torque Load
5
/
16
13-17 lbf-ft
18-23 Nm
3
/
8
27-34 lbf-ft
36-46 Nm
½
44-59 lbf-ft
60-80 Nm
Low Voltage Terminal Torque
Wire Size
Torque
# 26-10 AWG
5.3 – 7.0 inch - pounds
Table 5 - Environmental Specifications
Altitude
De-rate load capability above 1000 meters 1% per 100 meters.
Operating Temperature 40
o
C Maximum
Humidity
Maximum 95%RH, Non-condensing
Table 6 - Electrical Specifications
300kVA
400kVA
500kVA
Rated voltage
480/277
480/277
480/277
Breaker Rating
600A
800A
800A