WARNING

Marine Electrical Products

AC Main Source Selector Panels@PN 8032 / PN 3032 / PN 8061 / PN 3061

Panel Specifications
Material:
Primary Finish:
Final Panel Finish:
Circuit Breakers:
Amperage Rating:
Voltage Rating:

0.125” 5052-H32 Aluminum Alloy
Chemical Treatment per Mil Spec C-5541C
Graphite color 2 part textured Polyurethane
Double Pole AC / DC Magnetic Breakers
65VDC/277VAC Maximum
PN 8032 / PN 3032 is rated for 30 amp service
PN 8061 / PN 3061 is rated for 50 amp service
Panel is rated for 120 Volts AC and is so marked inorder to comply with ABYC standards
Inches@@@@Millimeters

Overall Dimensions: 5-1/4 x 3-3/4
133.40 x 95.30
Mounting Centers: 4-7/16 x 2-15/16 112.70 x 74.60
Standards:
This panel, when properly installed, complies withall applicable Standards and Recommended
Practices of the American Boat and Yacht Council
as well as United States Coast Guard 33 CFR Sub
Part 1.

The Purpose of the AC Main Source Selector Panel
Alternating Current (AC) power changes polarity 60 times per second inthe US, Canada and Latin America and 50 times per second in Europe.
This is the frequency of the power and is referred to as Hertz (or the nowoutdated term “cycle”). Because of this alternating nature of AC power,
two live sources of AC power, such as shore power and inverter power,or shore power and a generator, cannot be electrically connected. The
AC Main Source Selector panel is designed to connect two sources ofAC power to a common circuit while preventing both sources from being
connected to the circuit simultaneously.

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It is not possible within the scope of these instructions to fully acquaintthe installer with all the knowledge of electrical systems that may benecessary to correctly install this product. If the installer is notknowledgeable in electrical systems we strongly recommend that anelectrical professional be retained to make the installation.
If either the panel front or back is to be exposed to water it must be
protected with a waterproof shield.
The panels must not be installed in explosive environments such as
gasoline engine rooms or battery compartments as the circuit breakers
are not ignition proof.
The vessel’s shore power cord must be disconnected form shoresidepower before installing this electrical panel.
If an inverter is installed on the vessel its power leads must be
disconnected at the battery before the panel installation. Be aware thatmany inverters have a “sleep mode” in which their voltage potential
may not be detectable with measuring equipment.
If an AC Generator is installed aboard it must be stopped and rendered
inoperable before the panel is installed.
Verify that no other AC source is connected to the vessel’s wiring
before the panel is installed.

Guarantee
Any Blue Sea Systems product with which a customer is not satisfied
may be returned for a refund or replacement at any time.

Blue Sea Systems Inc.
425 Sequoia Drive
Bellingham, WA 98226 USA

Document 9603 Rev.K

Phone (360) 738-8230
Fax (360) 734-4195
E-mail conduct@bluesea.com
www.bluesea.com

Installation
1.

Disconnect all AC and DC power
Disconnect all AC power originating on or off the vessel. This includes
inverters, generators, shore power attachments and any other device
capable of supplying AC power to the ship’s circuits.
Disconnect the main positive DC cable from all batteries to eliminate
the possibility of a short circuit and to disable the inverter while
installing the distribution panel.

2.

Select mounting location and cut opening
If this panel is to serve as your main shore power disconnect circuit
breaker, select a location which is not more then 10 feet from the shore
power inlet or the electrical attachment point of a permanently installed
shore power cord as measured along the conductors of the feed wires.
If it is more then 10 feet, additional fuses or circuit breakers must be
installed within 10 feet of the shore power inlet.

Do not confuse the neutral current carrying wires (sometimes calledground) with the green normally non-current carrying wires (sometimescalled grounding). These two wires must be connected only at thesource of power, nowhere else.
If the feed wires are from the shore power inlet or the electricalattachment point of a permanently installed shore power cord and theinlet or attachment point is more then 10 feet from this panel, additional
fuses or circuit breakers must be installed within 10 feet of the shore
power inlet. The measurement is made along the conductors.

Wire sizing chart
Use the wire sizing chart below to determine the minimum branch andfeed circuit wire sizes.

Select a mounting location which is protected from water on the panel
front and back and is not in an area where flammable vapors frompropane, gas or lead acid batteries accumulate. The circuit breakers
used in marine electrical panels are not ignition protected and may
ignite such vapors.
Using the panel template provided, make a cut out in the mounting
surface where the distribution panel is to be mounted. Do not yet
fasten the panel to the mounting surface.

3.

Install source 1, source 2 and output wires
Install the feed wires from AC source 1 and AC source 2. Install theoutput wires. Refer to the wire sizing chart to select the correct wiresize. Connect the black AC hot, white AC neutral and green AC safety
ground as shown in the illustration.

Note:

This chart assumes wire with 105° C insulation rating
and no more than 2 conductors are bundled.
Not suitable for sizing flexible shore power cords.

Installation (continued)
4.

7.

Interrupt Ratings
If complete ABYC compliance is desired, verify that the circuit breakersupplied in this panel as shown in Table A meets the interrupt rating
requirements of Table B.

Testing@@@

Connect the vessel’s shore power and verify the Reverse Polarity
light is not illuminated. Verify that the green LED is illuminated toensure that power is present at the panel. If the red Reverse
Polarity light is on then either the hot and ground or the hot andneutral wires have been crossed. Starting at the panel, trace theconnections back as far as necessary to locate the error.
Using a multimeter where the power source is connected to thepanel verify:a. 120 volts between hot and neutral(nominal, this may vary depending on source voltage)b. 120 volts between hot and ground.
c. 0 volts between neutral and ground.
Turn off the shore power and test with the alternate source.

Related Products from Blue Sea Systems• PanelBack Insulating Covers• High Amperage Fuses and Circuit Breakers for positive feed wires• High Amperage Battery Switches• Terminal Blocks and Common Bus Connectors• AC Distribution Panels• DC Distribution Panels• AC and DC Digital and Analog Voltmeters and Ammeters

5.

Installation of Backlight System
The backlight board is a DC device. When installing it in an AC panel
both wire leads must be connected to an appropriate DC source andground.
Connect the yellow negative wire to a DC ground. Connect the red
positive wire to any DC positive supply, usually a switch that controls
the vessel’s other nighttime illumination.

6. Apply circuit labels and mount panel
Apply a label for each circuit form the 10 basic labels provided. Fasten
the panel to the mounting surface.

Wiring Diagram
AC Source Selector PanelPN 8032 / PN 3032 / PN 8061 / PN 3061

Useful Reference BooksCalder, Nigel, 1996: Boatowner’s Mechanical and Electrical Manual,
2nd edition, Blue Ridge Summit, PA: TAB Books, Inc.
Wing, Charlie, 1993: Boatowner’s Illustrated Handbook of Wiring,Blue Ridge Summit, PA: TAB Books, Inc.