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Eaton 93PM Sidecar Integrated Accessory Cabinet-Bypass (50 kW and 100 kW SIAC-B) Installation and Operation Manual P-164000230—Rev 09
Table 7. External Power Wiring Recommendations: Eaton 93PM 50 kW and 100 kW Four-Wire SIAC-B– Two and
Three Breaker Maintenance Bypass
Basic Unit Rating
Units
Rating 60 Hz
Rating 60 Hz
kW
50
100
Input/Output Voltage
Volts
480/480
480/480
AC Input to Maintenance Bypass
(3) Phases, (1) Neutral - see Note, (1) Ground
A
Maximum Amps
73
146
Minimum Conductor Size (Phase A, B, and C, and
Neutral)
Number per Phase
AWG or kcmil
(each)
2
(1)
4/0
(1)
Minimum Conductor Size (Ground)
Number per Phase
—
AWG or kcmil
(each)
8
(1)
6
(1)
AC Output to Critical Load
Full Load Current
(3) Phases, (1) Neutral - see Note, (1) Ground
C
Maximum Amps
60
120
Minimum Conductor Size (Phase A, B, and C, and
Neutral)
Number per Phase
AWG or kcmil
(each)
3
(1)
2/0
(1)
Minimum Conductor Size (Ground)
Number per Phase
—
AWG or kcmil
(each)
8
(1)
6
(1)
Building and Inter-Cabinet Ground
Minimum Conductor Size (Ground)
Number per Phase
—
AWG or kcmil
(each)
8
(1)
6
(1)
NOTE
Callout letters
A
and
C
map to
,
, and
.
The neutral conductor is sized the same as the phase conductor for balanced and resistive loads. Non-linear loads, up to
the maximum of 1.5x the load current, require a larger neutral conductor and should be sized in accordance with NFPA
NEC 70 Article 310.15(B)(5).
NOTE
The UL 924 Emergency Lighting UPS utilizes the SIAC-B for maintenance purposes only.
The SIAC-B is not used for protection of conductors and is utilized as a switching
component only. Use the tables provided in the applicable Eaton 93PM UPS Installation
and Operation manual, listed in paragraph
, for the appropriate
conductor and upstream breaker size.
Summary of Contents for 93PM IBC-L
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