Alpha Technologies AMPS80 HP - Manual (Page 24)

Doc. #: 026-069-B0 Rev F 22
3.3 120V/240V Split Phase or 120/208V 2-Pole Systems
The recommendations in Table D are for reference only. A registered professional engineer
must review and approve or modify these recommendations in compliance with applicable
national and local electrical and building codes.
NOTE:
Table D — 40 kVA, split-phase, 2-pole systems (AMPS80-2-40 series), single AC feed
Model
AMPS80-2-40
AMPS80-2-
40-H2
AMPS80-2-40,
MBS
AMPS80-2-
40-H2, MBS
AC
input
Feed Single Single Single Single
AC input voltage
120/208 V
or 120/240 V
120/208 V
or 120/240 V
120/208 V
or 120/240 V
120/208 V
or 120/240 V
Full load AC input current per phase 148 A 225 A 179 A 256 A
AC input poles & wiring 3 w + G 3 w + G 3 w + G 3 w + G
Wiring 2-pole 2-pole 2-pole 2-pole
Recommended
AC input breaker/fuse2
200 A 300 A 225 A 350 A
Recommended
AC input wire size
90ºC copper1
NEC 30ºC #2/0 250 kcmil #3/0 350 kcmil
CEC 30ºC #3/0 300 kcmil #4/0 See dual feed
NEC 40ºC #3/0 250 kcmil #3/0 See dual feed
CEC 40ºC #3/0l 300 kcmil #4/0 See dual feed
AC
output
Total maximum AC output 40 kVA, 32 kW 40 kVA, 32 kW 40 kVA, 32 kW 40 kVA, 32 kW
AC output voltage
120/208 V
or 120/240 V
120/208 V
or 120/240 V
120/208 V
or 120/240 V
120/208 V
or 120/240 V
AC output poles & wiring 3 w + G 3 w + G 3 w + G 3 w + G
Wiring 2-pole 2-pole 2-pole 2-pole
AC output current per phase 167 A 167 A 167 A 167 A
Installed inverter input
& output circuit breaker
250 A 250 A 250 A 250 A
Recommended
AC output wire size
90ºC copper1
NEC 30ºC #4/0 #4/0 #4/0 #4/0
CEC 30ºC 250 kcmil 250 kcmil 250 kcmil 250 kcmil
NEC 40ºC 250 kcmil 250 kcmil 250 kcmil 250 kcmil
CEC 40ºC 300 kcmil 300 kcmil 300 kcmil 300 kcmil
AC input & output
connection
terminals
Box lugs are rated for either Aluminum or Copper wire, 350 kcmil to #6 AWG. Fasten clamping screw to
42 N-m (375 in-lbs) for #1 AWG to 350 kcmil wire or 23 N-m (200 in-lbs) for #6 to #2 AWG wire.
Note 1
Inverter AC Input & AC Output connections: Calculations based on full load and charging current, 0.8 derating with 5
current carrying conductors, (L1,L2,L3,2XN) due to possible high harmonic content load. Temperature correction factor
applied when needed.
Note 2
Maximum AC utility service protection feeding the AMPS80 HP is 400 A. The actual supply circuit breaker must be sized appropriately
for the supply wire used. Consult your local and national electrical codes. The AC source must be limited to 18 kA short circuit current.
Double neutral is strongly recommended for AC output wiring (and AC input wiring to the MBS) for 3Ф systems with significant non-
linear (ie rectified capacitive) loads. Because the AC input to the inverters is power factor corrected, AC wiring solely to the inverters
does not require double neutral wiring.