Blue Opal/Electrics: Difference between revisions

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subgraph "House Battery 1"
subgraph "House Battery 1"
   HB1_POS[+];
   HOUSE_BAT1_POS[+];
   HB1_NEG[-];
   HOUSE_BAT1_NEG[-];
end
end
subgraph "House Battery 2"
subgraph "House Battery 2"
   HB2_POS[+];
   HOUSE_BAT2_POS[+];
   HB2_NEG[-];
   HOUSE_BAT2_NEG[-];
end
end
subgraph "Starter Battery"
subgraph "Starter Battery"
   SB_POS[+];
   STARTER_BAT_POS[+];
   SB_NEG[-];
   STARTER_BAT_NEG[-];
end
end
subgraph "House Battery Switch"
subgraph "House Battery Switch"
   HOU_SW_POS[S];
   HOUSE_SW_POS[S];
   HOU_SW_NEG[L];
   HOUSE_SW_NEG[L];
end
end
subgraph "Engine Battery Switch"
subgraph "Engine Battery Switch"
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   ENG_SW_NEG[L];
   ENG_SW_NEG[L];
end
end
subgraph "Solar MPPT"
 
   SOL_POS[+];
subgraph "Alternator"
  SOL_NEG[-];
   ALT_GEN_POS[+];
end
end
subgraph "Mains Charger"
subgraph "BC1240 (Mains)"
   MAINS_CHG_NEG[-];
   MAINS_CHG_NEG[-];
   MAINS_CHG_HOU[House];
   MAINS_CHG_HOU["Unused(House)"];
   MAINS_CHG_ENG[Starter];
   MAINS_CHG_ENG[Starter];
end
end
 
subgraph "BB1240 (12V)"
subgraph "Sterling ProSplit-R"
   BB1240_STARTER[Source];
   STERLING_STARTER[+];
   BB1240_NEG[Neg];
  STERLING_HOUSE[+];
   BB1240_HOU[Target];
  STERLING_ALT[Alternator Feed];
   STERLING_NEG[-];
   STERLING_ON[Ignition Feed];
  STERLING_ALT --> STERLING_STARTER & STERLING_HOUSE;
end
end


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end
end


subgraph "Alternator"
  ALT_GEN_POS[+];
end
subgraph "House Shunt"
subgraph "House Shunt"
   HOU_SHUNT_POS[S]
   HOUSE_SHUNT_POS[S]
   HOU_SHUNT_NEG[L]
   HOUSE_SHUNT_NEG[L]
   HOU_SHUNT_MON[Tap]
   HOUSE_SHUNT_MON[Tap]
   HOU_SHUNT_POS --> HOU_SHUNT_NEG;
   HOUSE_SHUNT_POS --> HOUSE_SHUNT_NEG;
   HOU_SHUNT_POS --- HOU_SHUNT_MON --- HOU_SHUNT_NEG;
   HOUSE_SHUNT_POS --- HOUSE_SHUNT_MON --- HOUSE_SHUNT_NEG;
end
end


BAT_NEG_BUS[Battery Negative Busbar];
BAT_NEG_BUS[Battery Negative Busbar];
BSA_STUD[BlueSea Ancillary]
BSA_STUD[BlueSea Ancillary]
HOU_POS_BUS[House Positive Bus]
HOUSE_POS_BUS[House Positive Bus]
HOU_NEG_BUS[House Negative Bus];
HOUSE_NEG_BUS[House Negative Bus];
HOU_DIST_FUSE(Distribution Fuse 150A)
HOUSE_DIST_FUSE(Distribution Fuse 150A)
HOU_CHARGE_FUSE(Charge Fuse 70A)
HOUSE_CHARGE_FUSE(Charge Fuse 70A)
STARTER_CHARGE_FUSE(Charge Fuse 70A)
STARTER_CHARGE_FUSE(Charge Fuse 70A)
SOLAR_CHARGE_FUSE(Charge Fuse 5A)
GROUND[Engine Block];
GROUND[Engine Block];
WLS_SW_POS([Windlass Switch]);
WLS_SW_POS([Windlass Switch]);
ALWAYS_ON_DIST[Always On Bus];
ALWAYS_ON_DIST[Always On Bus];


HB1_POS === HB2_POS;
HOUSE_BAT1_POS === HOUSE_BAT2_POS;
HB1_NEG === HB2_NEG;
HOUSE_BAT1_NEG === HOUSE_BAT2_NEG;
SOL_POS --- SOLAR_CHARGE_FUSE --> HB2_POS;
HOUSE_BAT1_POS ==== HOUSE_DIST_FUSE;
SOL_NEG --- HB2_NEG;
HOUSE_BAT1_NEG === STARTER_BAT_NEG;
HB1_POS ==== HOU_DIST_FUSE;
HB1_NEG === SB_NEG;


HOU_SW_POS --- ALWAYS_ON_DIST;
HOUSE_SW_POS --- ALWAYS_ON_DIST;
STERLING_HOUSE ==> HOU_CHARGE_FUSE;
STERLING_STARTER ==> STARTER_CHARGE_FUSE;
FRIDGE[Chillbox] --- BAT_NEG_BUS;
FRIDGE[Chillbox] --- BAT_NEG_BUS;
STARTER_CHARGE_FUSE --> SB_POS;
STARTER_CHARGE_FUSE --> STARTER_BAT_POS;
HOU_CHARGE_FUSE --> HB1_POS;
HOUSE_CHARGE_FUSE --> HOUSE_BAT1_POS;
SB_POS --- ENG_SW_POS;
STARTER_BAT_POS --- ENG_SW_POS;
SB_NEG === HOU_SHUNT_POS ;
STARTER_BAT_NEG === HOUSE_SHUNT_POS ;
ENG_SW_NEG --- IGNITION;
ENG_SW_NEG --- IGNITION;
ENG_SW_NEG --- WLS_SW_POS;
ENG_SW_NEG --- WLS_SW_POS;
ALT_GEN_POS === STERLING_ALT;
ALT_GEN_POS == 16mm ==> STARTER_CHARGE_FUSE;
STERLING_NEG --- SB_NEG;
BB1240_NEG === STARTER_BAT_NEG;
BAT_NEG_BUS ==== HOU_NEG_BUS;
STARTER_CHARGE_FUSE == 10mm ==> BB1240_STARTER;
BB1240_HOU == 10mm ==> HOUSE_CHARGE_FUSE;
BAT_NEG_BUS === HOUSE_NEG_BUS;
MAINS_CHG_NEG === BAT_NEG_BUS;
MAINS_CHG_NEG === BAT_NEG_BUS;
HOU_SW_NEG === HOU_POS_BUS;
HOUSE_SW_NEG === HOUSE_POS_BUS;
HOU_DIST_FUSE --- HOU_SW_POS;
HOUSE_DIST_FUSE --- HOUSE_SW_POS;
HOU_SW_NEG === BSA_STUD;
HOUSE_SW_NEG === BSA_STUD;
HOU_SHUNT_NEG === BAT_NEG_BUS;
HOUSE_SHUNT_NEG === BAT_NEG_BUS;
SB_NEG ==== GROUND;
STARTER_BAT_NEG ==== GROUND;
MAINS_CHG_HOU --> HOU_CHARGE_FUSE;
MAINS_CHG_ENG --> STARTER_CHARGE_FUSE;
MAINS_CHG_ENG --> STARTER_CHARGE_FUSE;


classDef pos stroke:#f00
classDef pos stroke:#f00
classDef fuse stroke:#00f,fill:#5c5;
classDef fuse stroke:#00f,fill:#5c5;
class HB1_POS,HB2_POS,HOU_DIST_FUSE_POS,HOU_SHUNT_POS,SOL_POS,WLS_SW_POS,ENG_SW_POS,HOU_SW_POS pos;
class HOUSE_BAT1_POS,HOUSE_BAT2_POS,HOUSE_DIST_FUSE_POS,HOUSE_SHUNT_POS,WLS_SW_POS,ENG_SW_POS,HOUSE_SW_POS pos;
class ENG_CHG_FUSE_POS,STERLING_STARTER,STERLING_HOUSE,IGNITION pos;
class ENG_CHG_FUSE_POS,STERLING_STARTER,STERLING_HOUSE,IGNITION pos;
class MAINS_CHG_HOU,MAINS_CHG_ENG,SB_POS,ALT_GEN_POS pos;
class MAINS_CHG_HOU,MAINS_CHG_ENG,STARTER_BAT_POS,ALT_GEN_POS pos;
class HOU_DIST_FUSE,HOU_CHARGE_FUSE,STARTER_CHARGE_FUSE,SOLAR_CHARGE_FUSE fuse;
class BB1240_HOU,BB1240_STARTER pos;
class ALWAYS_ON_DIST,BSA_STUD,HOUSE_POS_BUS pos;
class HOUSE_DIST_FUSE,HOUSE_CHARGE_FUSE,STARTER_CHARGE_FUSE fuse;


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Revision as of 11:03, 24 March 2024

Battery banks

House bank - 2x 105 Ah SLA. Effective 100 Ah. Starter - 1x 110 Ah SLA. Effective 50 Ah.

Terminal and driver sizes

Area Item Fixing Driver Stud
Battery Shunt Terminal 10mm 8mm
House Terminal 14mm 10mm
Starter Terminal 13/14mm 10mm
Blue Sea Fused Bus Terminal 10mm 5mm
MIDI fuses Terminal 10mm 8mm
Negative bus Terminal 14mm 8mm

Core power distribution and charging

This diagram is for the wiring in the starter and house battery bank compartments.

Charge and Distribution fuses are MIDI style with spare, Blue Sea 7720.

Solar charger fuse is inline automotive.

Blue Sea Ancillary

This distribution setup is used for power distribution in the saloon; it's in the same physical area as the batteries. Distributor is a Blue Sea Systems ST compact 8-circuit (5046) with 10-32 stud, and 8-32 screw terminals.

Always on distribution

This powers low draw devices that should be powered without the house switch being engaged. Basically, lights. Located in the wiring cabinet above and behind the chart table. Wired to supply side so it's always got power, bar the local fuse blowing.

Water pump

Wired via a relay so that the switch by the chart table just activates the relay, and the pump gets power from 6mm2 direct from the battery compartment.


The relay is the same as the one for the engine starter, 12V 40A SPST with 30/85/86/87 terminals, normally open.

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