Asco Series 300 User manual

Series 300
400-800 Amp
Quick Connect Power Panel Transfer Switch Accessory
www.ascopower.com
Florham Park, NJ 07932-1591
DANGER is used in this manual to warn of a hazard
situation which, if not avoided, will result
in death or serious injury.
WARNING is used in this manual to warn of a
hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION is used in this manual to warn of a
hazardous situation which, if not avoided, could
result in minor or moderate injury.
Important:
This manual contains information critical to the proper
installation and operation of the ASCO Series 300
Quick Connect Power Panel. Be certain to read and
understand all instructions prior to installation and
operation.
The ASCO Series 300 Quick Connect Power Panel
must be installed in
conjunction with a transfer switch.
Limited Warranty
When this ASCO Series 300 Quick Connect Power Panel
is installed and operated
according to the manual’s
instructions ASCO Power Technologies will repair or
replace any of its mechanical or electrical parts if they are
found
to be defective in material or workmanship within two
year of the
purchase date.
Maintenance
The ASCO Series 300 Quick Connect Power Panel will
require periodic
maintenance. ASCO Power Technologies
recommends annual inspections to keep
the panel in safe
operating condition. ASCO Power Technologies
recommends that
the Pre-Operation and Maintenance
Checklist under Appendix A
serve as a basis for annual
inspection.
Technical Support
ASCO Power Services are available to assist in resolving
issues by calling 1-800-800 2726 (ASCO) or emailing
[e-mail]. For any other
information, please refer to ascopower.com
381333-464

ASCO Series 300 Quick Connect Power Panel
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Contents
Page(s) Section
1 Limited Warranty
1 Maintenance
1 Technical Support
3 Prior to Installation
3 Shipment: Unpacking and Inspection
4-5 Installation
6-7 Set-up
7 Disconnecting Circuits
8 Appendix A:
Pre-Operation and Maintenance Checklist

ASCO Series 300 Quick Connect Power Panel
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Prior to Installation: Site Preparation
Prepare installation site according to local codes.
The ASCO Series 300 Quick Connect Power Panel
is to be secured to a building
using appropriate
3/8“ fasteners (See Figure 1).
The surface where the ASCO Series 300 Quick Connect
Power Panel is to be secured must be capable of
supporting the weight of the cabinet as well as the cable
attached to it.
The following should be taken into consideration when
locating the
ASCO Series 300 Quick Connect Power Panel:
– The ASCO Series 300 Quick Connect Power Panel is
designed for exterior operation ONLY
– Identify and meet local codes and local Authority
Having Jurisdiction (AHJ)
– Toprevent carbon monoxidepoisoning from
improperly ventilated generator emissions, the Power
Panelmust be mounted outdoors only. The mounting
location is to be carefully selected to allow convenient
connection to a generator, and located a suitable
distance away from any building openings or HVAC
inlets.
– Proper clearance must be allowed in front of the
ASCO Series 300 Quick Connect Power Panel to allow
for opening of access doors and attachment of
externally connected cables. This distance should be
no less than six (6) feet from the face of the panel.
– Access by unauthorized personnel and vandals should
be taken into consideration when locating this device.
Shipment: Unpacking and Inspection
Be careful in the use of sharp object when cutting
packaging
as damage to the outer enclosure
may result.
Perform a visual inspection to ensure the door and handle
are in
functioning condition and that the panel integrity is
intact
.
Figure 1
Front view with mounting holes

ASCO Series 300 Quick Connect Power Panel
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Installation
The installation of the ASCO Series 300 Quick
Connect Power Panel should be carried out by
qualified personnel in accordance with local
electrical codes.
The ASCO Series 300 Quick Connect Power Panel
must be installed in
conjunction with a transfer
switch.
The transfer switch shall not have a rating greater
than the ASCO Series 300 Quick Connect Power
Panel.
Step 1: Fasten the ASCO Series 300 Quick
Connect Power Panel to secure location
The ASCO Series 300 Quick Connect Power Panel
weighs 58 lbs.
without attached cables.
1. The panel should be located so there is adequate room
for the externally connected cables to hang below the
panel
A. Typically allow a minimum of 36” clearance from the
bottom of the panel to finished ground level
2. Installation must be level and plumb to allow for proper
drainage from ASCO Series 300 Quick Connect Power
Panel weep holes
3. Fastening onto an external wall using 3/8” fasteners
must be completed prior to proceeding with any
terminations (See Figure 1
for hole spacing)
Step 2: Installing the Conduit
Conduit to enter through the top of the device
To maintain TYPE 3R Rating compliance for the
enclosure, proper sealing procedures must be
followed. This
is to include, but not limited to, the use of
proper gaskets.
In order to prevent enclosure damage and to attain
the
enclosure requirements, the conduit must be aligned to
prevent unnecessary stress on the enclosure walls.
1. Open upper to door to expose dead front panel
2. Unfasten the dead front panel by removing the four (4)
Phillips- headed 10-32 x 1/2” screws securing it (See
Figure 2 and 3)
3.
Conduit to be sized according to cabling rating
4. It is recommended that a knockout punch be used to cut
hole for conduit
A. Place the punch on the inside of the enclosure and draw
the punch through to the die on the outside.
5. Vacuum entire upper chamber to ensure no shavings are
left behind
Figure 2
Front view with hinged cover removed
Figure 3
Front view with dead front panel removed
Dead front
panel for
contractor-only
access
Lug
terminals

ASCO Series 300 Quick Connect Power Panel
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Installation – Continued
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 the 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
A.
Ground conductor must be a minimum of #3 AWG
Conduit shall NOT be relied upon to provide grounding
protection to tap box
5. Continue to connect the neutral and then the phases
6. Vacuum entire upper chamber to ensure no metal
shavings are left behind
7.
Replace dead front panel door and secure using four
(4) 10-32 x
1/2” Phillips-headed screws
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. Pull Determine phase rotation of the utility power.
A. 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
2. 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)
Figure 4
Place rotation label here
Step 5: Conduct a safety test to ensure
proper installation
Do not attempt to use the ASCO Series 300 Quick Connect
Power Panel prior to installation and completing the Pre-
Operation and Maintenance
Checklist under Appendix A .

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Set-up
Step 6: Review Pre-Operation Checklist under
Appendices A prior to operation (pg. 8)
DO NOT ATTEMPT CONNECTION WHILE CIRCUITS
ARE LIVE
– Do not use cables if they appear frayed
– Do not use cable if connectors or plug do not seat
properly
– Do not use cables if any copper cabling is exposed
– To limit risk of shock, disable generator automatic
start to
prevent unintended starting
Step 7: Determining phase rotation of generator
1. Disconnect generator from all loads if needed
2. Connect a phase rotation meter to the output phases
of the generator
3. Record generator phase rotation
(clockwise or counter-clockwise)
Step 8: Making Cam Connections
1. Open chamber door
2. Feed ground (green) cablethrough appropriate port in
bottom
3. Complete the Connection
Proper connection (See Figure 5):
A. Grasp connector jacket and firmly insert cam connector
into cam plug
B.
Push on cam connector jacket until connector fully seats
in cam plug
C.
Rotate cam connector jacket counterclockwise until it
stops
Figure 5
4. Complete the Neutral (white) connection
Proper connection (See Figure 5):
A. Grasp connector jacket and firmly Insert cam connector
into cam
plug
B.
Push on cam connector jacket until connector fully seats
in cam plug
C. Rotate cam connector jacket counterclockwise until it
stops
5. Complete the Phase (hot) connections
A. Should the phase rotation of the generator (as determined
in Step 7.3. above) and utility power (label found on the
inside of the door for the Cam connection chamber)
match, connect the Hots as follows:
Generator Hot ASCO Series 300 Quick Connect Power
l
A A
B B
C C
Should the phase rotation of the generator (as determined in
Step 7.3. above) and utility power (label found on the inside
of the door for the Cam connection chamber) NOT match,
connect the Hots as follows:
Generator Hot ASCO Series 300 Quick Connect Power
l
A B
B A
C C
Proper connection (See Figure 5):
A. Grasp connector jacket and firmly insert cam connector
into cam plug
B.
Push on cam connector jacket until connector fully seats
in cam plug
C.
Rotate cam connector jacket counterclockwise until it
stops
6. Make sure all connections are right and secure
Step 9: Close chamber door, and secure
allowing cables to exit cable ports at
bottom.

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Set-up – Continued
Step 10: Powering Up
Power MUST BE supplied from a single generator
1. Start generator per manufacturer instructions
2. Toggle the transfer switch, diverting power from
utility to generator feed
Step 11: Disconnecting Circuits
DO NOT ATTEMPT DISCONNECTING WHILE
CIRCUITS ARE LIVE
1. To limit risk of shock, disable generator automatic
start to prevent unintended starting
– Unlock and open chamber door
– Order of disconnect
2. Disconnect the Phase (hot) connections, beginning
with the furthest to the left
Proper disconnection (See Figure 5):
A. Grasp connector jacket firmly and rotate cam
connector clockwise until it stops
B. Firmly pull on connector until it separates from the
plug
C. Set aside
3. Continue with ALL Phase (hot) connections
Figure 5
4.
Complete disconnect of ALL hot connections prior to
proceeding
5. Disconnect the Neutral (white) connection.
Proper disconnection (See Figure 5):
A. Grasp connector jacket firmly and rotate cam
connector clockwise until it stops
B. Firmly pull on connector until it separates from the
plug
C.
Set aside
6. Disconnect the Ground (green) connections.
Proper disconnection (See Figure 5):
A. Grasp connector jacket firmly and rotate cam
connector clockwise until it stops
B. Firmly pull on connector until it separates from the
plug
C. Set aside
Step 12: Close chamber door and
secure.

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Appendix A
Pre-Operation Checklist
1. Visual inspection of enclosure
– Ensure the ASCO Series 300 Quick Connect Power
Panel is firmly secured to the building
– Review conduit connection for signs of leakage
– Ensure enclosure is intact with no signsof cracking
2. Open the chamber door
– Ensure the chamber is dry and free of debris
– Ensure that gaskets are pliable and no cracking exists
– Ensure that door hinges are secure and lubricated
3. Remove dead front panel
– Ensure that all load terminals are securely fastened
and that the set screws are set at 375 lb-in torque each
– Ensure electrical connections are intact with no signs
of corrosion or cracking
4. Review all safety labels and ensure that they are
present and legible
– Replace as needed
5. Inspect all portable cables
– Do not use cables if they appear frayed
– Do not use cable if connectors or plug do not seat
properly
– Do not use cables if any copper wiring is exposed
6. ASCO Power Services are available to assist in
resolving issues. If you have any questions or need
technical advice or
suggestions regarding this product,
please contact ASCO Power Technologies
at
1-800-800-2726(ASCO) or e-mail
[email protected]
The ASCO and ASCO Power Technologies
marks are owned by Emerson Electric Co. or
its affiliates and utilized herein under license.
©2017 ASCO Power Technologies.
All Rights Reserved.