Blue Opal/Electrics: Difference between revisions

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=== Battery banks ===
=== Battery banks ===
House bank - 2x 105 Ah SLA. Effective 100 Ah.
House bank - 2x 105 Ah SLA. Effective 100 Ah.
Starter - 1x 110 Ah SLA. Effective 50 Ah.
Starter - 1x 80 Ah SLA. Effective 40 Ah.
 
Alternator


=== Alternator ===
BV PSH 80A, Hitachi saddle mount. Sourced from Myles Balfe.  V-belt sheave.
BV PSH 80A, Hitachi saddle mount. Sourced from Myles Balfe.  V-belt sheave.
[[File:Img 2122-768x1024.jpg|none|thumb|Part number is 985.001.080.200.]]
[[File:Img 2122-768x1024.jpg|none|thumb|Part number is 985.001.080.200.]]
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Charge and Distribution fuses are MIDI style with spare, Blue Sea 7720.
Charge and Distribution fuses are MIDI style with spare, Blue Sea 7720.


Solar charger fuse is inline automotive.
Solar charger fuse is inline automotive, 5A to the local house bus positive.
 
Solar feed is via a Bulgin Buccaneer connector that terminates to Anderson PowerPole, and solar panel has MC4 <-> MC4 <-> APP.
 
2026-08: Update needed - Solar is MPPT 75/15, connected to bus bars that connect to the lithium house. Bus bar connects to battery +ve, to charge line from DC-DC, and feeds MPPT and Cerbo GX. Negative bus connects to starter negative, house negative, MPPT and Cerbo negative. Renogy replaced with 100W folding panel from Amazon. Feed line for solar in cockpit using Bulgin Buccaneer 10-250V, fed via ferruled wires to MPPT.


{{#mermaid:config.theme = neutral | graph TD;
{{#mermaid:config.theme = neutral |  
graph TD;


subgraph "House Bank"
subgraph "Lithium 180Ah (2024)"
subgraph "House Battery 1 (2019)"
   HOUSE_BAT_NEG[-];
   HOUSE_BAT1_POS[+];
   HOUSE_BAT_POS[+];
  HOUSE_BAT1_NEG[-];
end
subgraph "House Battery 2 (2019)"
   HOUSE_BAT2_POS[+];
  HOUSE_BAT2_NEG[-];
end
end
end
subgraph "Starter Battery (2023)"
subgraph "Starter Battery (2023)"
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subgraph "House Battery Switch"
subgraph "House Battery Switch"
   HOUSE_SW_POS[S];
   HOUSE_SW_POS[S];
   HOUSE_SW_NEG[L];
   HOUSE_SW_LOAD[L];
end
end
subgraph "Engine Battery Switch"
subgraph "Engine Battery Switch"
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   HOUSE_SHUNT_NEG[L]
   HOUSE_SHUNT_NEG[L]
   HOUSE_SHUNT_MON[Tap]
   HOUSE_SHUNT_MON[Tap]
   HOUSE_SHUNT_POS --> HOUSE_SHUNT_NEG;
   HOUSE_SHUNT_POS --- HOUSE_SHUNT_NEG;
   HOUSE_SHUNT_POS --- HOUSE_SHUNT_MON --- HOUSE_SHUNT_NEG;
   HOUSE_SHUNT_POS --- HOUSE_SHUNT_MON --- HOUSE_SHUNT_NEG;
end
subgraph "House +ve Busbar"
  HOUSE_LBUS_POS[6x]
end
subgraph "House -ve Busbar"
  HOUSE_LBUS_NEG[6x]
end
end


subgraph "Solar"
subgraph "Solar"
   SOLAR_PANEL["200 Wp Renogy"]
   SOLAR_PANEL["100 Wp"]
   subgraph "Votronic 250"
   subgraph "MPPT75/15"
     SOLAR_IN_POS[S]
     SOLAR_IN_POS[S]
     SOLAR_IN_NEG[S]
     SOLAR_IN_NEG[S]
    SOLAR_OUT_NEG[L]
     SOLAR_OUT_POS[L]
     SOLAR_OUT_POS[L]
    SOLAR_OUT_NEG[L]
   end
   end
   SOLAR_PANEL --> SOLAR_IN_POS;
   SOLAR_PANEL --- SOLAR_IN_POS;
   SOLAR_PANEL --> SOLAR_IN_NEG;
   SOLAR_PANEL --- SOLAR_IN_NEG;
end
end


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WINDLASS_NEG[Windlass];
WINDLASS_NEG[Windlass];


HOUSE_BAT2_POS === HOUSE_BAT1_POS;
HOUSE_LBUS_POS ==== HOUSE_DIST_FUSE;
HOUSE_BAT2_NEG === HOUSE_BAT1_NEG;
HOUSE_LBUS_NEG === STARTER_BAT_NEG;
HOUSE_BAT1_POS ==== HOUSE_DIST_FUSE;
HOUSE_BAT1_NEG === STARTER_BAT_NEG;


HOUSE_SW_POS --- ALWAYS_ON_DIST;
HOUSE_SW_POS --- ALWAYS_ON_DIST;
FRIDGE[Chillbox] --- BAT_NEG_BUS;
FRIDGE[Chillbox] --- BAT_NEG_BUS;
STARTER_CHARGE_FUSE_LOAD --> STARTER_BAT_POS;
STARTER_CHARGE_FUSE_LOAD --- STARTER_BAT_POS;
HOUSE_CHARGE_FUSE --> HOUSE_BAT1_POS;
HOUSE_CHARGE_FUSE === HOUSE_LBUS_POS;
STARTER_BAT_POS == 25mm ==> ENG_SW_SOURCE;
STARTER_BAT_POS == 25mm ==> ENG_SW_SOURCE;
STARTER_BAT_NEG === HOUSE_SHUNT_POS ;
STARTER_BAT_NEG === HOUSE_SHUNT_POS ;
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BAT_NEG_BUS === HOUSE_NEG_BUS;
BAT_NEG_BUS === HOUSE_NEG_BUS;
MAINS_CHG_NEG === BAT_NEG_BUS;
MAINS_CHG_NEG === BAT_NEG_BUS;
HOUSE_SW_NEG === HOUSE_POS_BUS;
HOUSE_SW_LOAD === HOUSE_POS_BUS;
HOUSE_DIST_FUSE --- HOUSE_SW_POS;
HOUSE_DIST_FUSE --- HOUSE_SW_POS;
HOUSE_SW_NEG === BSA_STUD;
HOUSE_SW_LOAD === BSA_STUD;
HOUSE_SHUNT_NEG === BAT_NEG_BUS;
HOUSE_SHUNT_NEG === BAT_NEG_BUS;
STARTER_BAT_NEG ==== GROUND;
STARTER_BAT_NEG ==== GROUND;
MAINS_CHG_ENG --> STARTER_CHARGE_FUSE_SOURCE;
MAINS_CHG_ENG --- STARTER_CHARGE_FUSE_SOURCE;
SOLAR_OUT_POS --> STARTER_BAT_POS;
SOLAR_OUT_POS --- HOUSE_LBUS_POS;
SOLAR_OUT_NEG --> STARTER_BAT_NEG;
SOLAR_OUT_NEG --- HOUSE_LBUS_NEG;
WINDLASS_NEG --> STARTER_BAT_NEG;
WINDLASS_NEG --- STARTER_BAT_NEG;
 
HOUSE_LBUS_POS --- HOUSE_BAT_POS;
HOUSE_LBUS_NEG --- HOUSE_BAT_NEG;
classDef pos stroke:#f00
classDef pos stroke:#f00
classDef fuse stroke:#00f,fill:#5c5;
classDef fuse stroke:#00f,fill:#5c5;
class HOUSE_BAT1_POS,HOUSE_BAT2_POS,HOUSE_DIST_FUSE_POS,WLS_SW_POS,ENG_SW_SOURCE,ENG_SW_LOAD,HOUSE_SW_POS pos;
class HOUSE_BAT_POS,HOUSE_DIST_FUSE_POS,WLS_SW_POS,ENG_SW_SOURCE,ENG_SW_LOAD,HOUSE_SW_POS pos;
class STARTER_CHARGE_FUSE_SOURCE,SOLAR_IN_POS,SOLAR_OUT_POS pos;
class STARTER_CHARGE_FUSE_SOURCE,SOLAR_IN_POS,SOLAR_OUT_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,STARTER_BAT_POS,ALT_GEN_POS pos;
class MAINS_CHG_HOU,MAINS_CHG_ENG,STARTER_BAT_POS,ALT_GEN_POS pos;
class HOUSE_SW_LOAD pos;
class STARTER_CHARGE_FUSE_LOAD pos;
class STARTER_CHARGE_FUSE_LOAD pos;
class BB1240_HOU,BB1240_STARTER pos;
class BB1240_HOU,BB1240_STARTER pos;
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class HOUSE_DIST_FUSE,HOUSE_CHARGE_FUSE,STARTER_CHARGE_FUSE fuse;
class HOUSE_DIST_FUSE,HOUSE_CHARGE_FUSE,STARTER_CHARGE_FUSE fuse;


}}


}}
To-do: Replace direct-to-terminal with distribution bus bars. Starter negative terminal has more than 4 cables attached.


=== Blue Sea Ancillary===
=== Blue Sea Ancillary===

Latest revision as of 20:11, 25 August 2026

Battery banks

House bank - 2x 105 Ah SLA. Effective 100 Ah. Starter - 1x 80 Ah SLA. Effective 40 Ah.

Alternator

BV PSH 80A, Hitachi saddle mount. Sourced from Myles Balfe. V-belt sheave.

Part number is 985.001.080.200.

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, 5A to the local house bus positive.

Solar feed is via a Bulgin Buccaneer connector that terminates to Anderson PowerPole, and solar panel has MC4 <-> MC4 <-> APP.

2026-08: Update needed - Solar is MPPT 75/15, connected to bus bars that connect to the lithium house. Bus bar connects to battery +ve, to charge line from DC-DC, and feeds MPPT and Cerbo GX. Negative bus connects to starter negative, house negative, MPPT and Cerbo negative. Renogy replaced with 100W folding panel from Amazon. Feed line for solar in cockpit using Bulgin Buccaneer 10-250V, fed via ferruled wires to MPPT.

To-do: Replace direct-to-terminal with distribution bus bars. Starter negative terminal has more than 4 cables attached.

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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