20 Eaton 93E UPS (20–30 kVA, 208/220V) Installation and Operation Manual 164000301—Rev 04
Table 6. UPS External Power Cable Terminations for the Eaton 93E–20, 93E–30/20, and 93E–30/30 (Continued)
Terminal Function Terminal Function
Number and Size of
Pressure Termination
AWG or kcmil
Tightening
Torque Nm (lb
in)
Screw Size and
Type
AC Output to Critical Load L1 Phase A 1 – #14-2/0
12.4 (110)
3/16 in. Hex
L2 Phase B 1 – #14-2/0
12.4 (110)
3/16 in. Hex
L3 Phase C 1 – #14-2/0
12.4 (110)
3/16 in. Hex
N Neutral 2 – #14-2/0
12.4 (110)
3/16 in. Hex
DC Input from External
Battery
+
Battery (+)
1 – #6-350
31.1 (275)
5/16 in. Hex
–
Battery (-)
1 – #6-350
31.1 (275)
5/16 in. Hex
Customer Ground Ground Ground 4 – #14-1/0
5.1 (45) Slotted
NOTE Customer ground, sized in accordance with NEC Table 250.122, can be run in any conduit listed in Table 7.
Conduit sizes were chosen from NEC Table 4, Electrical Metallic Tubing (EMT). See Table 7 for conduit
requirements.
Per NEC article 300, 3(B)(1), all three-phase conductors must be run in the same conduit. Neutral and ground
must be run in the same conduit as the phase conductors.
Conduit is sized to accommodate one neutral conductor the same size as the phase conductor and one ground
conductor sized in accordance with NEC Table 250.122. This product can support a 1.5x sized neutral. If two
neutral conductors or an oversized neutral conductor are to be installed, verify the size of the conduit needed to
accommodate the extra wire or size and use that conduit size in place of the conduit size listed in Table 7.
Conduit sizes listed are for copper wiring only.
Table 7. Power Cable Conduit Requirements
UPS Model
Voltage
Terminal
Number of
Wires in
Conduit
Minimum
Conduit Trade
Size
Number of
Conduits
Eaton 93E–20
Eaton 93E–30/20
208/220
Vac
AC Input to UPS Rectifier
(A, B, C, Neutral, Ground)
5
1-1/2
1
AC Input to Bypass and Output (Five
Wire)
(A, B, C, Neutral, Ground)
5
1-1/2
1
DC
Battery
(Positive, Negative, Ground)
3 1-1/2
1
Eaton 93E–30/30 208/220
Vac
AC Input to UPS Rectifier
(A, B, C, Neutral, Ground)
5 2 1
AC Input to Bypass and Output (Five
Wire)
(A, B, C, Neutral, Ground)
5 2 1
DC
Battery
(Positive, Negative, Ground)
3 2 1
UPS Installation Plan and Unpacking
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