Inverter cable option

Snowcamp caravan build · Australia · 12V LiFePO4 / 240V AC

Off-Grid Electrical Schematic Package

Reference design from supplied project data. AC installation to be completed and certified by a licensed electrician to applicable Australian caravan standards.

ProjectSnowcamp caravan
Drawing setElectrical
RevisionB
Date18 Jun 2026
ScaleNTS
Sheet1 of 10
DC positive DC negative 240V AC active/neutral Protective earth / chassis bond Monitor / control
System overview Overall caravan off-grid electrical system showing generator, inlet, inverter charger, battery bank, DC charging and load circuits. Yamaha EF2200iS 2200W generator 240V · 50Hz 15A caravan inlet 2.5mm² AC cable Weatherproof exterior RCBO 15A / 30mA 2 pole preferred Renogy Pro HF RIV1230PCH-24S 3000W inverter/charger · 240V AC input limit setting: 7A AC sub-circuit 240V GPO / AC loads 2.5mm² cable 15A lead 2.5mm² AC IN AC OUT 2 × Renogy Core LiFePO4 self heating 300Ah each · 600Ah total · 12V + Busbar 600A covered · M8 studs - Busbar 600A covered · M8 studs 400A ANL inverter fuse M8 lugs 400A switch main isolation BMV-712 shunt 500A / 50mV 250A MEGA per battery + Renogy RBC50D1S-AU 50A MPPT/DC-DC future solar / vehicle DC fuse panel fridge · heater existing lights · USB 80A feed fuse · 16mm² 95mm² · M8 lugs120mm² · M8 lugs busbar to inverter: 95mm²busbar to inverter: 120mm² 16mm² · 60A MIDI Branch circuits labelled on DC sheet

Design basis

12V 600Ah lithium house bank, 3000W inverter/charger, 15A Australian caravan AC inlet, future 50A MPPT/DC-DC solar and alternator charging.

Cable option

Toggle selects the high-current battery and inverter cable schedule: 95mm² M8 lugs120mm² M8 lugs.

Existing lighting

Older 12V lighting remains provisional. Inspect polarity, insulation, voltage drop, current draw and termination quality before reuse.

Safety note

Fuse ratings protect cable and equipment. Confirm final routing, cable temperature rating, bundling, installation method and equipment nameplate ratings before construction.

Snowcamp caravan off-grid electrical schematic package
Rev B
Sheet 1/10

DC schematic · 12V lithium distribution

DC Power Schematic

High-current battery, inverter, shunt, busbar, charging and load distribution with cable, fuse and lug callouts.

Voltage12V DC
Bank600Ah LiFePO4
Sheet2 of 10
DC+Red
DC-Black
Option95mm²120mm²
Detailed DC schematic Detailed DC schematic with battery fuses, busbars, switch, ANL fuse, inverter charger, BMV shunt, MPPT DC-DC and branch fuse panel. Battery 1 Renogy Core LiFePO4 300Ah · self heating + - Battery 2 Renogy Core LiFePO4 300Ah · self heating + - 250A MEGA Battery 1 fuse 250A MEGA Battery 2 fuse Positive busbar 600A covered · M8 studs Negative busbar 600A covered · M8 studs Victron BMV-712 500A / 50mV shunt battery side isolated from load side 400A switch 400A continuous DC min 400A ANL inverter fuse Renogy Pro HF RIV1230PCH-24S 3000W inverter/charger DC input cables: M8 lugs 95mm² · M8 95mm² lugs120mm² · M8 120mm² lugs 95mm² · M8 95mm² lugs120mm² · M8 120mm² lugs Busbar → inverter: 95mm² · M8 lugsBusbar → inverter: 120mm² · M8 lugs Return: 95mm² via shunt/load busReturn: 120mm² via shunt/load bus Renogy RBC50D1S-AU 50A MPPT/DC-DC future panels / vehicle 16mm² · 60A MIDI · M6/M8 DC fuse panel 16mm² feed cable 80A feed fuse M6/M8 feed lugs · ferrules at panel 16mm² battery cable · 60A MIDI fuse 16mm² feed · 80A fuse · panel main Kings 110L fridge 6mm² twin · 15A fuse Vevor 5kW diesel heater 4mm² twin · 20A fuse Existing 12V lighting 2.5mm² · 10A fuse test before reuse USB / accessory sockets 4mm² twin · 20A fuse fused branch positive rail negative return rail Fuse panel terminal / ferrule Heater startup load allowed Inspect old cable + lamps 20A fuse · labelled outlets BMV-712 display head fused sense wire to battery +
DC schematic with high-current cable option toggle
Rev D
Sheet 2/10

AC schematic · Australian caravan 240V

AC Power Schematic

Generator supply, 15A caravan inlet, RCBO protection, inverter/charger AC input and AC output distribution.

Supply240V AC
Frequency50Hz
Sheet3 of 10
AC cable2.5mm²
Inlet15A caravan
Input limit7A
AC active/neutral shown in blue Protective earth / chassis bond Control/relay logic or compliance note
AC schematic AC schematic showing generator, inlet, RCBO, inverter charger and protected AC output with earth bonding notes. Yamaha EF2200iS 2200W generator 240V · 50Hz 15A caravan inlet weatherproof A/N/E to switchboard RCBO 15A / 30mA licensed AC board Renogy Pro HF AC input / charger Power priority: AC First Max charge current: 60A AC load side GPO / appliances 2.5mm² cable 15A lead 2.5mm² A/N/E protected AC IN AC OUT Protective earth bar bond to chassis as required Renogy N-G relay opens on AC input closes in inverter mode AC installation notes - All 240V work by licensed electrician. - No fixed N-E link in caravan board. - Keep Renogy N-G relay enabled. - Test RCD trip in shore, generator and inverter-only modes. Generator loading - Supplied setting limits AC input to 7A. - 7A x 240V approx 1680W before losses. - Yamaha output is floating/insulated. - Generator earth reference must be approved and RCD-tested. Cable and protection - 2.5mm2 AC cable shown for inlet/output. - RCBO rating shown as design intent. - PE/chassis bonding to be continuous. - Label inverter-supplied outlets at switchboard.
AC schematic for Australian caravan style installation
Rev D
Sheet 3/10

Equipment layout · product placement concept

Equipment Layout and Product Photos

Physical arrangement concept with embedded product images and practical installation notes for the caravan service bay.

MountingService bay
CoolingVentilated
Sheet4 of 10
ServiceFront access
ImagesEmbedded
ScaleNTS
Equipment layout Caravan equipment layout concept showing product images, mounting zones, ventilation, service clearances and equipment notes. Snowcamp caravan electrical equipment layout - final positions to suit cabinetry and service clearances Yamaha EF2200iS portable generator - external only 15A inlet / RCBO licensed 240V termination Renogy Pro HF 3000W inverter/charger 2 × Renogy Core 300Ah each - restrain battery bank Renogy RBC50D1S-AU future MPPT/DC-DC charger Victron BMV-712 shunt near negative busbar Kings 110L fridge 6mm² run - 15A fuse Vevor 5kW diesel heater 4mm² run - keep clear of exhaust AC inlet route DC high-current route 12V branch route Drafting note: maintain inverter ventilation, battery restraint, covered busbars, fuse access, cable bend radius and separation from heater exhaust/combustion air routing.
Equipment layout with embedded product photos
Rev B
Sheet 4/10

Cable / fuse schedule · construction reference

Cable and Fuse Schedule

Cable sizes, protection ratings, lug sizes and installation notes from the supplied project data.

DC option95mm²120mm²
AC cable2.5mm²
Sheet5 of 10
Busbars600A
Switch400A
ShuntBMV-712

Schedule C-001

Final cable lengths to be measured on the caravan after equipment mounting.

ID From To Polarity / service Cable Protection Lug / terminal Notes
DC-01A Battery 1 + 250A MEGA fuse 1 DC+ 95mm² red120mm² red 250A MEGA at battery M8 95mm²M8 120mm² Keep as short as practical; cover live studs.
DC-01B Battery 2 + 250A MEGA fuse 2 DC+ 95mm² red120mm² red 250A MEGA at battery M8 95mm²M8 120mm² Match cable length to Battery 1 where possible.
DC-02 MEGA fuse outputs Positive busbar DC+ 95mm² red120mm² red Battery fuses upstream M8 95mm²M8 120mm² Positive busbar rated 600A covered.
DC-03 Battery negatives BMV-712 battery side DC- 95mm² black120mm² black Unfused negative M8 95mm²M8 120mm² No load negative to battery side of shunt.
DC-04 BMV-712 load side Negative busbar DC- 95mm² black120mm² black Shunt rated 500A / 50mV M8 95mm²M8 120mm² Negative busbar rated 600A covered.
DC-05 Positive busbar 400A switch / 400A ANL / inverter + DC+ 95mm² red120mm² red 400A ANL M8 95mm²M8 120mm² Switch must be 400A continuous DC rated; 600A intermittent preferred.
DC-06 Negative busbar Inverter - DC- 95mm² black120mm² black Return via BMV shunt M8 95mm²M8 120mm² Route beside positive pair where possible.
DC-07 Positive busbar Renogy RBC50D1S-AU Charge DC+ 16mm² red 60A MIDI M6/M8 suit fuse holder and busbar Future solar / alternator charging feed.
DC-08 Positive busbar DC fuse panel main Load DC+ 16mm² red 80A fuse M6/M8 feed lugs, ferrules at panel Panel main feed to branch circuits.
DC-09 DC fuse panel Kings 110L fridge Branch DC ± 6mm² twin 15A blade/fuse panel Ferrules / appliance terminals Minimise voltage drop; label fridge circuit.
DC-10 DC fuse panel Vevor 5kW diesel heater Branch DC ± 4mm² twin 20A blade/fuse panel Ferrules / heater harness terminals Dedicated feed; protect from exhaust heat and vibration.
DC-11 DC fuse panel Existing 12V lights Branch DC ± 2.5mm² existing / repair 10A blade/fuse panel Inspect and replace poor joins Test before reuse verify insulation, polarity and load.
DC-12 DC fuse panel USB / accessory sockets Branch DC ± 4mm² twin 20A blade/fuse panel Ferrules / socket terminals Use labelled outlets and covered terminals.
AC-01 15A inlet RCBO / inverter AC input 240V AC A/N/E 2.5mm² 15A / 30mA RCBO Licensed electrician to select Australian caravan AC installation.
AC-02 Inverter AC output AC load circuit 240V AC A/N/E 2.5mm² As certified by electrician Licensed electrician to select Label inverter-fed outlets.
Cable/fuse schedule from supplied data
Rev B
Sheet 5/10

Shopping list ? image-first procurement tracker

Component Shopping List

Clickable image-first list for the Snowcamp caravan build. Use each dropdown to mark what is already on hand, ordered, needs buying or needs measuring.

CountryAustralia
CurrencyAUD check
Sheet6 of 10
RevisionB
ModeShopping
StatusLive dropdowns
Dropdown choices save in this browser. Click any image or item name to open its reference link. 0 have 0 need 0 ordered 0 check
Yamaha EF2200iS generator
Yamaha EF2200iS generator
Qty 1 ? 2200W portable 240V supply
External only; feeds 15A caravan inlet.
Renogy Pro HF inverter/charger
Renogy Pro HF inverter/charger
Qty 1 ? 3000W, 12V DC to 240V AC
Set AC input limit 7A; max charge 60A.
Renogy Core self-heating batteries
Renogy Core self-heating batteries
Qty 2 ? 300Ah each, 600Ah total, 12V
Parallel bank; restrain and protect terminals.
Victron BMV-712 monitor
Victron BMV-712 monitor
Qty 1 ? 500A / 50mV shunt monitor
All charge/load negatives via shunt.
Renogy RBC50D1S-AU charger
Renogy RBC50D1S-AU charger
Qty 1 ? 50A MPPT/DC-DC
Future solar / vehicle charging provision.
Renogy 200W flexible solar panel
Future solar panel kit
Qty TBC ? Panels, glands and roof cabling
Size later to roof space and charging target.
Kings 110L fridge
Kings 110L fridge
Qty 1 ? 12V fridge branch circuit
6mm? run protected by 15A fuse.
Vevor 5kW diesel heater
Vevor 5kW diesel heater
Qty 1 ? 12V diesel heater
Coming for build; keep wiring clear of heat.
Narva 12V LED interior lamp
Existing caravan 12V lighting
Qty Existing ? Older lighting circuits
Test polarity, insulation, current and switches.
15A inlet / RCBO assembly
15A inlet / RCBO assembly
Qty 1 set ? 15A caravan inlet, RCBO protection
240V selection/install by licensed electrician.
Projecta 250A fuse and holder
Battery MEGA fuses + holders
Qty 2 ? 250A MEGA per battery positive
Mount close to each battery positive terminal.
Renogy ANL fuse set and holder
Inverter ANL fuse + holder
Qty 1 ? 400A ANL
Between main switch/busbar and inverter positive.
BEP 400A battery isolation switch
Main battery isolation switch
Qty 1 ? 400A continuous DC rated minimum
Accessible service isolation.
Switch Boss 12-way blade fuse block
DC fuse panel
Qty 1 ? 80A main feed capable
Fridge, heater, lighting, USB branches.
Littelfuse inline MIDI fuse holder
DC panel feed fuse + holder
Qty 1 ? 80A MIDI or suitable DC fuse
Protects 16mm? fuse-panel feed cable.
Switch Boss 4-way blade fuse box
Branch fuse set
Qty 1 set ? 15A, 20A, 10A, 20A spares
Fridge, heater, lights and USB circuits.
95mm2 red and black inverter cable kit
High-current red/black cable
Qty As cut ? 95mm? inverter/battery cable120mm? inverter/battery cable
Toggle above selects final size.
M8 tinned copper cable lug
High-current M8 crimp lugs
Qty As cut ? M8 95mm? lugsM8 120mm? lugs
Use adhesive heatshrink and pull-test crimps.
Red 16mm2 battery cable roll
16mm? red/black cable
Qty As cut ? DC panel feed and MPPT/DC-DC battery cable
Use correct lug/ferrule at each termination.
Narva 6mm twin-core sheathed cable
6mm? twin cable
Qty As cut ? Fridge branch circuit
15A fuse; verify voltage drop under load.
Narva 4mm twin-core sheathed cable
4mm? twin cable
Qty As cut ? Diesel heater and USB/accessories
20A fused circuits; heater startup current allowed.
Narva light-duty twin-core sheathed cable
2.5mm? cable pack
Qty As cut ? AC cabling by electrician; lighting repairs as needed
Separate 240V work from DC branch wiring.
Narva heavy-duty dual USB socket
USB / accessory sockets
Qty TBC ? 12V accessory outlets
20A fuse; label outlets at fuse panel.
Green/yellow earth cable roll
Chassis earth bond hardware
Qty 1 set ? Green/yellow earth, lugs and bond point hardware
240V earth/bonding by electrician.
Narva heat shrink assortment
Install consumables
Qty 1 kit ? Heatshrink, conduit, glands, P-clips, labels
Include abrasion protection and cable ID labels.
Image-first shopping list with status dropdowns
Rev B
Sheet 6/10

Cable cut list · measure on vehicle before crimping

Cable Cut List

Nominal planning lengths for estimating only. Cut after equipment is fixed, bends are checked and service loops are marked.

High-current95mm²120mm²
LugsM8 95mm²M8 120mm²
Sheet7 of 10
StatusEstimate
Allowance+10%
VerifyOn van
ID Cable run Colour Size Nominal cut length Lugs / ends Install note
CUT-01 Battery 1 + to 250A MEGA fuse Red 95mm²120mm² 0.35m + service allowance 2 × M8 95mm²2 × M8 120mm² Fuse as close to battery positive as practical.
CUT-02 Battery 2 + to 250A MEGA fuse Red 95mm²120mm² 0.35m + service allowance 2 × M8 95mm²2 × M8 120mm² Match Battery 1 length if bank geometry allows.
CUT-03 MEGA fuse outputs to positive busbar Red 95mm²120mm² 2 × 0.55m estimate 4 × M8 95mm²4 × M8 120mm² Dress parallel battery feeds evenly.
CUT-04 Battery negatives to BMV-712 battery side Black 95mm²120mm² 2 × 0.65m estimate 4 × M8 95mm²4 × M8 120mm² No other negative takeoff on battery side.
CUT-05 BMV-712 load side to negative busbar Black 95mm²120mm² 0.45m estimate 2 × M8 95mm²2 × M8 120mm² Keep short and mechanically supported.
CUT-06 Positive busbar to switch / ANL / inverter + Red 95mm²120mm² 1.20m estimate total sections 6 × M8 95mm²6 × M8 120mm² Allow bend radius and fuse holder spacing.
CUT-07 Negative busbar to inverter - Black 95mm²120mm² 1.00m estimate 2 × M8 95mm²2 × M8 120mm² Run alongside positive where practical.
CUT-08 Positive busbar to Renogy RBC50D1S-AU fuse/input Red 16mm² 1.20m estimate 2 × M6/M8 to suit hardware 60A MIDI fuse on battery end.
CUT-09 Negative busbar to Renogy RBC50D1S-AU Black 16mm² 1.20m estimate 2 × M6/M8 to suit hardware Route with positive charging cable.
CUT-10 Positive busbar to DC fuse panel Red 16mm² 1.00m estimate 2 × M6/M8, ferrule at panel if required 80A feed fuse.
CUT-11 Negative busbar to DC fuse panel negative Black 16mm² 1.00m estimate 2 × M6/M8, ferrule at panel if required Common negative return bus.
CUT-12 DC fuse panel to Kings 110L fridge Red/black twin 6mm² Measure route + 10% Ferrules / appliance terminals 15A fuse; route away from hot areas.
CUT-13 DC fuse panel to Vevor diesel heater Red/black twin 4mm² Measure route + 10% Ferrules / heater harness terminals 20A fuse; protect near heater body and pump wiring.
CUT-14 DC fuse panel to existing lighting circuit Existing / red-black repair 2.5mm² Inspect existing; replace damaged sections Replace poor crimps or unmarked joins Test before reuse polarity, voltage drop, insulation.
CUT-15 DC fuse panel to USB/accessory sockets Red/black twin 4mm² Measure route + 10% Ferrules / socket terminals 20A fuse; label outlet rating.
CUT-16 AC inlet to RCBO / inverter / AC outlet circuit AC cable 2.5mm² Licensed electrician to measure Electrician selected 240V work only by licensed electrician.
Cable cut list with selectable inverter cable size
Rev B
Sheet 7/10

Commissioning · settings and checks

Settings Table and Test Checklist

Initial device settings from supplied project data plus practical commissioning checks for the generator, inverter charger, monitor and existing lighting.

BatteryLithium
MonitorBMV-712
Sheet8 of 10
PriorityAC First
Frequency50Hz
Charge60A max

Device Settings

Confirm against manufacturer manuals before energising.

Device / area Setting Value Commissioning note
Renogy Pro HF Battery type Lithium Confirm charge profile matches Renogy Core battery requirements.
Renogy Pro HF Power priority AC First Generator/inlet power charges and supplies loads when present.
Renogy Pro HF Frequency 50Hz Australian AC frequency.
Renogy Pro HF AC input limit 7A Protects Yamaha EF2200iS from overload under charging load.
Renogy Pro HF Max charge current 60A Supplied setting; verify generator performance during bulk charge.
Victron BMV-712 Battery capacity 600Ah Two 300Ah batteries in parallel.
Victron BMV-712 Charged voltage 14.2V Use after charger profile is confirmed.
Victron BMV-712 Tail current 4% 24A for a 600Ah bank.
Victron BMV-712 Charge efficiency 99% Typical LiFePO4 setting.
Victron BMV-712 Peukert exponent 1.05 Typical lithium setting.

Commissioning Checks

Tick off before handover.

Check Target Status
Battery polarity and parallel balance Both batteries same voltage before parallel connection □
Fuse placement 250A MEGA fuses close to each battery positive □
High-current lug crimp M8 95mm² lugs pull-tested and heat shrunkM8 120mm² lugs pull-tested and heat shrunk □
Busbar covers 600A positive and negative busbars covered and labelled □
Shunt wiring All charge/load negatives pass through BMV-712 shunt □
Inverter DC input Installed unit nameplate checked as 12V DC input before energising □
Generator charging test AC input limited to 7A without generator overload □
Shore power earth/RCD test Correct polarity, PE continuity and 30mA RCD operation verified □
Inverter-only N-G/RCD test AC input unplugged: Renogy N-G relay enabled and RCD trips □
Generator mode earth reference Yamaha floating output managed by approved device; RCD trip verified □
Diesel heater startup test 20A circuit holds during glow plug startup; wiring remains cool □
Existing 12V lighting inspection Polarity, insulation, current draw, switch condition and voltage drop verified □
Fridge voltage drop Acceptable voltage at fridge compressor under load □
AC certificate 240V work inspected/certified by licensed electrician □

Lighting work plan

Map existing circuits, remove unsafe joins, replace brittle cable, confirm switch ratings and re-label the fuse panel after testing.

Heater work plan

Keep DC cable away from exhaust and duct heat. Secure fuel pump wiring separately from high-current inverter cables.

Image status

Sheet 4 now includes embedded product photos for the generator, inlet, inverter/charger, batteries, DC-DC charger, monitor, fridge and heater.

Issue status

Draft schematic package for planning and trade review. 400A isolator is conditional on continuous DC rating; AC earthing requires licensed shore, generator and inverter-mode RCD testing.

Settings, commissioning and provisional-circuit checks
Rev D
Sheet 8/10

Interactive estimator

Maximum Demand and Voltage Drop Calculator

Enter measured one-way cable routes and actual load currents. Calculations use copper conductor resistance at 20C and are for planning review before final trade verification.

System12V DC / 240V AC
Battery600Ah LiFePO4
Sheet9 of 10
ModeLive calculator
Drop basisLoop length
Fuse basisCable first
12V maximum demand 0A Selected DC load rows
Estimated DC watts 0W Demand at nominal voltage
Per-battery share 0A Two batteries in parallel
Worst voltage drop 0% No row selected
Rows needing review 0 Fuse, cable or drop warning
Use Circuit / route Type Cable mm2 One-way m Load A Demand % Fuse A V drop Drop % Suggested fuse Status
Voltage drop uses V = I x (2 x route length x 0.0175 / conductor mm2). Fuse status checks that the fuse is above calculated demand and below the planning cable capacity allowance. Final ratings still depend on cable type, insulation temperature, bundling, route, termination rating and equipment instructions.
Interactive demand, voltage drop and fuse estimator
Rev C
Sheet 9/10

Procurement estimator

Order Cart and Remaining Cost Estimate

Local order list generated from the shopping status dropdowns. Edit quantities and unit prices after supplier checks; open links for actual purchasing.

CurrencyAUD estimate
StatusLocal order list
Sheet10 of 10
Have0
Need/order0
Total$0
Need to buy $0 0 items
Ordered / coming $0 0 items
Already have $0 0 items
Check / measure $0 0 items
Cart selected $0 Rows ticked for order list
Cart Item Status Qty Unit Unit $ Line $ Supplier / source
This cart is a local order list only. It does not place orders or transmit data to suppliers. Use the source links to check stock, shipping, exact part numbers and current prices before buying.