UPS Installation Plan and Unpacking
Eaton 9E UPS (40–60 kVA, 208/220V) Installation and Operation Manual P-164000058—Rev 4 www.eaton.com/powerquality 3-9
Conduit sizes were chosen from NEC Table 4, Electrical Metallic Tubing (EMT). See Table 3-6 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.
Conduit sizes listed are for copper wiring only.
External overcurrent protection and disconnect are not provided by this product, but are required by codes.
Refer to Table 3-4 for wiring requirements. If an output lockable disconnect is required, it is to be supplied by
the customer.
Table 3-7 lists the recommended rating for input circuit breakers.
To reduce the risk of fire, connect only to a circuit provided with maximum input
circuit breaker current ratings from Table 3-7 in accordance with the NEC, ANSI/NFPA 70.
Table 3-6. Power Cable Conduit Requirements
UPS Model Voltage Terminal
Number of Wires
in Conduit
Minimum Conduit
Trade Size
Number of
Conduits
Eaton 9E-40
Eaton 9E–60/40
208 Vac AC Input to UPS Rectifier
(A, B, C, Neutral, Ground)
52 1
AC Input to Bypass and Output (Five Wire)
(A, B, C, Neutral, Ground)
52 1
DC Battery
(Positive, Negative, Ground)
31-1/2 1
Eaton 9E–60/60 208 Vac AC Input to UPS Rectifier
(A, B, C, Neutral, Ground)
52-1/2 1
AC Input to Bypass and Output (Five Wire)
(A, B, C, Neutral, Ground)
52-1/2 1
DC Battery
(Positive, Negative, Ground)
52 1
Table 3-7. Recommended Input Circuit Breaker Ratings
Input Rating
UPS Model Load Rating 208V
Eaton 9E-40
Eaton 9E–60/40
80% Rated 175A
100% Rated 150A
Eaton 9E–60/60 80% Rated 250A
100% Rated 200A
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