Blue Sea Systems 120-240V AC Main User Manual

Marine Electrical Products

AC Main Panel

PN 7372

Panel Specifications

Material: 0.125" 5052-H32 Aluminum Alloy Primary Finish: Chemical Treatment per Mil Spec C-5541C Final Panel Finish: Graphite color 2 part textured Polyurethane Circuit Breakers: 50 amp Triple Pole AC Magnetic Breakers

80V DC/277V AC Maximum Amperage Rating: 50 amp service Voltage Rating: 120/240 Volts AC

Panels are rated for these voltages and are so

marked in order to comply with ABYC standards.

Inches Millimeters

Panel Depth: 2 1/2 63.5 Overall Dimensions:5 1/4 x 3 3/4 133.4 x 95.3 Mounting Centers: 4 7/16 x 2 15/16 112.7 x 74.6

The Purpose of a Panel

There are six purposes of a marine electrical panel:

l Power distribution l Circuit (wire) protection l Circuit ON/OFF switching l Reverse Polarity Indication l Metering of voltage and amperage (In panels with meters) l Condition Indication (circuit energized)

WARNINGWARNING

] It is not possible within the scope of these instructions to fully

acquaint the installer with all the knowledge of electrical systems that may be necessary to correctly install this product. If the installer is not knowledgeable in electrical systems we strongly recommend that an electrical 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

gas engine rooms or battery compartments as the circuit breakers are not ignition proof.

] The vessel's shore power cord must be disconnected form shoreside

power 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 that many 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 vessels' 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.

Applicable Standards

l American Boat and Yacht Council (ABYC) Standards and

recommended Practices for Small Crafts sections: E-8, Alternating Current Electrical Systems on Boats.

l United States Coast Guard Code of Federal Regulations 33, Part

183, Subpart I, Electrical Systems on Boats.

Document 6637 Rev.C

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.

Select a mounting location which is protected from water on the panel front and back and is not in an area where flammable vapors from propane, gasoline 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 feed and output wires

Install the feed wires from the AC source. Install the output wires. Refer to the wire sizing chart to select the correct wire size. Connect the black AC hot, red AC hot, white AC neutral and green AC safety ground as shown in the illustration. The circuit breaker must have a rating less

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than the allowable amperage of the wire, yet greater than the circuit's continuous current.

Do not confuse the neutral current carrying wires (sometimes called ground) with the green normally non-current carrying wires (sometimes called grounding). These two wires must be connected only at the source of power, nowhere else.

If the feed wires are from the shore power inlet or the electrical attachment point of a permanently installed shore power cord and the inlet or attachment point is more then 10 feet from this panel, an additional fuse or circuit breaker must be installed within 10 feet of the shore power inlet. The measurement is made along the conductors.

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Phone (360) 738-8230

Fax (360) 734-4195

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Wire sizing chart

Use the wire sizing chart below to determine the minimum branch and

Wire Size

Allowable Amperage of Conductors

(AWG)

16 14

12 10

8 6

4 2

Note:

and no more then 2 conductors are bundled.

Not suitable for sizing flexible shore power cords.

feed circuit wire sizes.

Outside

Engine Spaces

25.0

35.0

45.0

60.0

80.0

120.0

160.0

210.0

For wire with 105°C insulation rating

Engine Spaces

Inside

21.3

29.8

38.3

51.0

68.0

102.0

136.0

178.5

Installation (continued)

4. 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 and ground.

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. Do not confuse the red DC positive with the red AC hot.

5. Apply circuit labels and mount panel

Apply a label for each source from the 10 basic labels provided. If the appropriate label is not included, Individual labels are available from Blue Sea Systems for specific applications. Refer to the label order form for a complete listing of individual labels.

Fasten the panel to the mounting surface using the panel mounting screws supplied with the panel.

6. Testing

] Connect the shore power cable to the boat AC power inlet. Do not

connect the shore power cable to the shore power pedestal. Instead run the shore power cable such that the shore power plug is next to the AC panel. With an Ohmmeter verify that the pins of the shore power plug are connected to the appropriate terminals of the panel. Refer to ABYC E-11 Figure 13 or 14 or NEC / NEMA documents for the standard pin arrangements for your plug.

] Connect the vessel's shore power and verify the Reverse Polarity

light is not illuminated. If the red Reverse Polarity light is on then either the hot and ground or the hot and neutral wires have been crossed. Starting at the panel, trace the connections back as far as necessary to locate the error.

] Using a multimeter where the power source is connected to the

panel verify:

Blue Sea Systems 120-240V AC Main User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual