Installation Manual
SERIES 300 Quick Connect Power Panel
381333-476 A
5
Installation - Input Panels
This section is for Installation of Input Panels.
For Installation of Output Panels proceed to
Page 9.
Step 3: Wiring the Lug Terminals
Ensure circuit breakers are OFF and the transfer switch
is locked out from utility power prior to connection.
Failure to install transfer switch will create the potential for the
generator to energize utility lines and endanger utility
personnel. Conversely, utility lines may energize the ASCO
SERIES 300 Quick Connect Power Panel and endanger
generator personnel.
The ASCO SERIES 300 Quick Connect Power Panel
is for use only for connection of a generator to the source
terminals of a transfer switch, such that the inlets are only
energized from the generator.
1. Pull the cables for the transfer switch to the ASCO
SERIES 300 Quick Connect Power Panel
2. Beginning with the ground, strip and install the cables in
the appropriate compression terminals
The terminals can accommodate #2 to 600MCM,
Copper wire only
3. Tighten terminal screws to 375 lb.-in torque each
4. If metallic conduit is used, connect ground wire from
ground bushing on conduit to the ground connection point
in the upper right quadrant of the panel
5. Ground conductor must be a minimum of #2 AWG
Conduit shall NOT be relied upon to provide grounding
protection to tap box
6. Continue to connect the neutral and then the phases
7. Vacuum entire upper chamber to ensure no metal
shavings are left behind
Three phase power systems consist of three phase or
hot conductors that are shifted by 120 degrees. Three
phase loads such as motors may only work properly if
the phases are connected in the correct order. Some
motors may work when connected improperly, but will
operate backwards. Utility power and electrical
generators may be wired either in a clockwise or
counter-clockwise order. It is important that any generator
connected to the
ASCO SERIES 300 Quick Connect
Power Panel
is connected in the same rotation
(clockwise or counter-clockwise) as the utility power.
Step 4: Determine Phase Rotation
This information will be needed when connecting a generator
.
1. Determine phase rotation of the utility power.
2. Connect a phase rotation meter to a three phase power
source in the building and record whether the building is
wired clockwise or counter-clockwise
3. Apply the provided label to the inside of the ASCO
SERIES 300 Quick Connect Power Panel on the inside of
the cam connection chamber door. (Figure 4)
Place rotation label here
Figure 4
