Blue Sea Systems PN 8081 Folheto

Marine Electrical Products

PN 8081 / PN 3081  5 Position
PN 8082 / PN 3082  10 Position

 

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:  

15 Ampere AC/DC magnetic 

 

65V DC/277V AC Maximum

Amperage Rating:   All components are sized for 100 Amperes of 

continuous current

Voltage Rating:  

Panels are rated for 12 volts DC. Panels can be 
upgraded to 24 volts with PN 8243, 18-32V DC Micro 
Voltmeter.

Voltmeter Rating: 

8-16 Volt DC meter. Accuracy 3% of scale

Ammeter Rating: 

0-50 Ampere DC meter. Accuracy 3% of scale

External Shunt: 

50 Millivolt = 50 Ampere resistive manganin element

Overall Dimensions:  8082/3082    5-1/4 x 11-1/4         133.40 x 190.50
 

8081/3081    5-1/4 x 7-1/2           133.40 x 190.50

Mounting Centers:  8082/3082    4-7/16 x 10-7/16     112.70 x 265.10
 

8081/3081    4-7/16 x 6-11/16     112.70 x 169.90

•  United States Coast Guard 33 CFR Sub Part 1, Electrical Systems.
•  American Boat and Yacht Council (ABYC) Standards and 

Recommended Practices for Small Craft sections: E-1, E-3, E-9.

Document 9863 Rev.H

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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 recommend that an electrical 
professional be retained to make the installation.

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If either the panel front or back is to be exposed to water it must be 
protected with a waterproof shield. 

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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. 

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The main positive connection must be disconnected at the battery post 
to avoid the possibility of a short circuit during the installation of this 
distribution panel.

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

Calder, 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.

PanelBack Insulating Covers
High Amperage Fuses and Circuit Breakers for positive feed wires
High Amperage Battery Switches
Terminal Blocks and Common Bus Connectors
AC and DC Voltmeters and Ammeters

 

 

Before starting, disconnect the main positive cable from all batteries to  

 

eliminate the possibility of a short circuit while installing the distribution  

 

panel. Also disconnect the AC shore power cord from the boat to    

 

eliminate the possibility of electrocution from AC wiring in the proximity  

 

of the DC distribution panel.

 

Remove and replace the existing 8-16V DC voltmeter with an 18-32V  

 

DC voltmeter (PN 8243). Connect the existing meter sense wires to the  

 

new meter, Red Positive wire to + and Yellow negative wire to -. 

 

All panel components are sized for 12 or 24 Volt systems. Use the  

 

labels provided to permanently identify the system voltage and its type  

 

(DC) as required by ABYC. Apply the appropriate voltage label to the  

 

recessed area on the front of the panel.

 

 

 

Select a mounting location which is protected from water on the panel  

 

front and back and is not in an area where fl ammable vapors from  

 

propane, 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 fasten  

 

the panel to the mounting surface.

 

Determine the positive feed (red) and negative return (black or yellow)  

 

wire size by calculating the total amperage of the circuits that will be  

 

routed through the panel. Blue Sea Systems’ electrical panels are  

 

rated at 100 ampere total capacity. The positive feed wire must be  

 

sized for 3% voltage drop at the 100 ampere panel rating or the    

 

maximum amperage that will be routed through the panel in any    

 

particular installation, whichever is less. It is recommended that the  

 

positive feed wire be sized for the full panel capacity, which in most  

 

cases, will require at least 2 AWG wire, assuming a 10 foot wire run  

 

between the panel and the batteries in 12 volt systems. Refer to the  

 

Wire Sizing Chart for other situations. 

 

Remember that the length of the circuit is the total of the positive wire  

 

from the power source and the negative wire back to the DC negative  

 

bus. Be certain that there is a fuse or circuit breaker of the correct size  

 

protecting the positive feed wire.

 

The panel is supplied with an external shunt ammeter that must be  

 

connected in the positive feed line to the panel. The shunt may be  

 

mounted at any point in the feed line, but mounting it close to the panel  

 

will keep the sense wires that run to the meter short, minimizing    

 

voltage loss and interference, creating the most accurate meter    

 reading.

 

Connect the positive feed wire from the positive source to either of the  

 

2 large bolt terminals on the shunt top. This is now the shunt positive  

 

terminal. Connect an additional length of feed wire from the remaining  

 

shunt terminal, now the negative terminal, to the panel positive bus.  

 

Next, connect a minimum 16 AWG red wire from the screw on the side  

 

of the shunt positive terminal to the meter positive terminal and    

 

connect a black or yellow wire from the shunt negative terminal to the  

 

meter negative terminal. There should be a 1 ampere fuse in the    

 

positive sense wire near the shunt terminal. Be certain that on all 4  

 

shunt connections the wire ring terminals sit directly on the brass  

 

blocks of the shunt without any washers in between.

 

Connect a negative return wire from the negative bus on the panel to  

 DC 

negative. 

 

The panel is supplied with a voltmeter and switch to monitor the    

 

voltage of three separate sources, usually the batteries. Connect a  

 

minimum 16 AWG red wire from each source to be monitored to each  

 

of  the corresponding input wires of the switch. There should be a 1  

 

ampere fuse in each positive wire near each source.