Alpha Technologies Cordex CXPS-M 48_24-1200_600A - Manual (Page 40)

9400004-J0 Rev B 38
Table E — Cable size equivalents (AWG to Metric)
Cable size (see notes 1
and 2)
Circular mils Square millimeters Equivalent metric cable
20 AWG 1020 0.519 1
18 AWG 1624 0.8232 1
16 AWG 2583 1.309 1.5
14 AWG 4107 2.081 2.5
12 AWG 6530 3.309 4
10 AWG 10380 5.261 6
8 AWG 16510 8.368 10
6 AWG 26250 13.30 16
4 AWG 41740 21.15 25
2 AWG 66370 33.63 35
0 AWG (or 1/0)
105600 53.48 50 or 70
00 AWG (or 2/0)
133100 67.42 70
0000 AWG (or 4/0)
211600 107.2 120
313 MCM (or kcmil)
313600 159 150 or 185
350 MCM (or kcmil)
350000 177.36 185
373 MCM (or kcmil)
373700 189 185 or 240
500 MCM (or kcmil)
500000 253.36 300
535 MCM (or kcmil)
535300 271 300
750 MCM (or kcmil)
750000 380.00 400
777 MCM (or kcmil)
777700 394 400
t
6.1.3 Recommended Torque Values
Recommended torque values for connection to the power system:
x Clear hole connections (nut and bolt)
x PEM studs
x PEM threaded inserts
x Thread formed connections (in copper bus bar)
Table F — Recommended torque values
1/4" 8.8 ft-lbs
3/8" 32.5 ft-lbs
1/2" 73 ft-lbs
SAE Grade 5 rating is required for these torque values.
6.1.4 Cabling Layout
The cabling at the time of installation is straightforward.
x The AC cables for the rectifiers connect to the shelves on both sides, and are brought down from
the top of the frame to the rectifier shelves.
x The battery cables and the external battery return bar (if equipped) connect to the bay at the top
rear.
x The load cables to the distribution modules enter the bay through the top.
x The load return cables connect to the distribution modules or an external battery return bar
x All signaling wires (for example, alarms from the CXC Controller) interfacing with the outside world
exit the frame through the top or through the conduit opening.