2026-05-23: 50 in x 30 in birch component backer.50 x 30 panel as the upper electrical mounting field on the rear wall. The two Epoch batteries sit low and in line in front of that wall, with heavy cable rises entering the bottom of the backer area rather than using the battery-obstructed lower bay as the main service face.2626680: 12V 460Ah Essential Series - Bluetooth & Heated LiFePO4 Battery x2.B12460 manual / product data: 20.9 x 8.7 x 12.1 in for each 12V 460Ah Essential Series battery.24/3000/70-50 120V: 536 x 277 x 147 mm (21.1 x 10.9 x 5.8 in) from the official Victron MultiPlus-II 120V manual PDF.279 x 169 x 97 mm from the official Victron technical specifications page.190 x 180 x 80 mm from the official Victron technical specifications page.290 x 170 x 80 mm from the official Victron technical specifications page.150/45: 130 x 186 x 70 mm from the official Victron MPPT solar charger manual.8027 Traditional Metal Panel: 7.50 x 5.25 in from the official Blue Sea product page.7748 SafetyHub 150: 6.50 x 5.08 x 1.88 in from retailer/spec mirrors that match the official Blue Sea 7748 product and drawing references; the official Blue Sea page linked in repo docs exposes a dimensioned drawing but did not surface the raw dimensions directly in the text scrape.7721 enclosed MEGA/AMG safety fuse block: about 4.92 x 4.00 x 1.51 in from a Blue Sea 2024 catalog mirror already cited on the electrical owner page.2104 PowerBar 600A bus: about 7.0 in overall length with 6.25 in mounting centers and about 2.0 in body width from Blue Sea product/comparison data, catalog mirrors, and aligned third-party line specs already cited on the electrical owner page.9003e: about 3.85 x 3.85 x 3.10 in from corroborating vendor/catalog listings; the official Blue Sea page exposes a dimensioned drawing but did not surface the raw dimensions directly in the text scrape.9003e for immediate shutdown access without reaching across the cabinet.7748 SafetyHub and Victron SmartSolar 150/45 so roof-charge and charge-source landings stay above the main DC branch area.8027 AC panel grouped next to the MultiPlus-II so shore-input, transfer, and AC-branch service stay together.These are the current planning positions on the 50 in W x 30 in H backer, measured from the rear-door-side upper-left corner of the panel. They are current layout coordinates, not yet drill templates.
| Component / area | Current position on backer | Notes |
|---|---|---|
Blue Sea 9003e |
top-left about 1 in from left, 1 in from top |
Keep immediate rear-door shutdown access. |
Blue Sea 7748 SafetyHub 150 |
top-left about 6.5 in from left, 1 in from top |
Charge-source combiner for current MVP source set. |
Victron SmartSolar 150/45 |
top-left about 14.4 in from left, 1 in from top |
Fixed-roof MPPT. |
| Future portable MPPT reserve | top-left about 23.1 in from left, 1 in from top |
Hold this area open rather than forcing the second MPPT into the MVP combiner layout. |
Blue Sea 8027 |
top-left about 30.5 in from left, 1 in from top |
Main inverter-backed AC branch panel. |
Blue Sea 7542 Rixen breaker |
current planning spot directly below / adjacent to the 8027, roughly 30.5 in from left and 10 in from top |
Keep it visually tied to the AC side while still distinct from the outlet panel because it belongs to MultiPlus AC-out-2, not the 8027. |
| Mini-split local breaker / disconnect | current planning spot in the service chase, roughly 26.5 in from left and 18 in from top |
Current HVAC branch direction is a local Blue Sea 7184 60A breaker/disconnect near the rear branch exit. Keep it accessible without forcing service hands across the heavy AC side. |
| Victron MultiPlus-II | top-left about 36.9 in from left, 4 in from top |
Vertical orientation; keep the right-side service area clear for DC and AC cable bend room. |
| Victron Lynx Class-T Power In | top-left about 1 in from left, 15 in from top |
Start of the low-left battery spine. |
| Victron Lynx Shunt VE.Can | top-left about 9.1 in from left, 16.7 in from top |
Keep the whole-bank negative path legible. |
| Victron Lynx Distributor | top-left about 17.6 in from left, 14.6 in from top |
Main DC discharge branch stage. |
| Charger-trunk landing fuse holder | current planning spot in the lower-middle service field, roughly 29.5 in from left and 23.5 in from top |
Current hardware direction is Blue Sea 7721 with 200A MEGA/AMG fuse, directly between the 7748 common trunk return and the rear protected positive bus. |
| Rear protected positive landing bus | current planning spot in the lower-middle / right service field, roughly 33 in from left and 23.5 in from top |
Current hardware direction is Blue Sea 2104. Keep it close enough to the Lynx/charger-trunk takeoff area to avoid cable stacking on device studs. |
| Rear heavy negative landing bus | current planning spot low and right, roughly 43 in from left and 23.5 in from top |
Current hardware direction is Blue Sea 2104 on the load side of the Lynx Shunt. This is also the intended takeoff area for the single main DC negative-to-chassis bond. |
| Reserved service / cable chase | about 26 in to 36 in from left and 14 in to 27 in from top |
Keep for mini-split branch, passenger-side feeder, roof/center feeder, comms, and service loops. |
These packages are part of the same rear driver-side electrical system but do not belong on the 50 x 30 upper backer itself.
| Package / area | Current direction | Notes |
|---|---|---|
| Upstream shore main package | Mount the Blue Sea 8077 on the driver-side rear utility-wall cavity immediately inboard of the Marinco 301EL-B inlet, on a fixed serviceable surface before the 10 AWG feeder turns toward the MultiPlus / rear electrical bay. |
This keeps the accepted path 301EL-B -> 8077 -> MultiPlus -> 8027 honest at the package level while preserving access from the rear utility area. Final offset and conductor distance still need measurement against the Blue Sea 10 ft rule. |
| Rear DC chassis-bond landing zone | Land the single main house DC bond from the rear heavy negative 2104 first to the Ford rear driver-side GP29-31 factory ground-point cluster in the rear lamp / utility-bay cavity if the final lug package fits there cleanly; otherwise use a dedicated fixed-body stud in that same cavity. Do not use the rear doors, battery restraint frame, or floor-edge wet zone. |
Current grounding direction is one local rear-bay grounding area shared by the house DC bond and the MultiPlus chassis / PE bond, with the BEMM rear driver-side ground-point cluster now the current first-choice landing target. The exact stud within GP29-31, or the dedicated-stud fallback, is still the remaining closeout item. |
8077 current footprint anchor: official Blue Sea comparison data exposes a 7.50 in x 3.75 in face size. That is the current physical basis for treating it as a compact upstream main panel in the driver-side rear utility-wall cavity rather than a generic abstract breaker box.138.1 x 124.4 x 53 mm (5.44 x 4.9 x 2.1 in) for each charger body.2127 current footprint anchor for the front premium-node package: mirrored Blue Sea dimension drawing exposes 5.88 in overall length, 3.60 in overall height, and 1.91 in depth, with 5.25 in between the stud zones. This is not a rear-backer component, but it matters to the broader electrical package because the front premium-node package now has a real bus footprint rather than a generic “find room near CCP2” note.7720 current footprint anchor for the front premium branches and both local converter-output packages: Blue Sea 2024 catalog mirror exposes about 4.20 in x 4.00 in face dimensions with about 1.51 in depth for the fuse-block body. This is enough to treat those packages as real compact local-protection assemblies rather than generic fuse-holder placeholders.24/12-70A current footprint anchor for both local 24V -> 12V service packages: Victron official material now aligns around about 65 x 88 x 195 mm (2.6 x 3.5 x 7.7 in) for the converter body.12-circuit fuse-block class current footprint anchor for both local 24V -> 12V service packages: current technical-line-drawing evidence from a distributor-hosted Blue Sea datasheet puts the 5031 family at about 6.47 x 3.32 x 1.52 in, with third-party retail specs corroborating the same general class.7184 current footprint anchor for the mini-split local breaker/disconnect: Blue Sea 2024 catalog mirror exposes about 2.91 in x 2.41 in face dimensions with about 1.90 in depth for the 718x breaker family. This is enough to keep the rear service-chase reservation honest at the package level and now matches the current exact local disconnect direction.14 in W x 6 in H x 3 in D in the lower-middle service field for the current landing-side package, with the 7721-class landing fuse holder immediately left of the rear protected positive 2104 and enough room for the 2/0 AWG charger trunk, outgoing positive takeoffs, and service wrench access. This is the current package-level direction behind the planning positions at about 29.5 in from left / 23.5 in from top for the landing fuse holder and about 33 in from left / 23.5 in from top for the rear positive bus.12 in W x 9 in H x 2 in D on the fixed driver-seat-pedestal / CCP-cover service wall for the current 2x 2127 + 2x 7720 arrangement, with buses stacked in one column and the premium-branch fuse blocks stacked in the adjacent positive-side column.18 in W x 12 in H x 3 in D on the fixed driver-seat-pedestal / CCP-cover service wall for the complete front package: 2x Orion XS chargers in one column and the 2127 + 2x 7720 premium-node stack in the adjacent column.4 in W x 6 in H x 2 in D plus cable-sweep room in the rear service chase for the current Blue Sea 7184 60A disconnect.24V -> 12V service package: reserve about 12 in W x 18 in H x 3 in D for the current Orion 24/12-70A + Blue Sea 7720 + ST Blade class service panel with the converter high, local output protection below / adjacent, and branch block in the same readable field.24V -> 12V service package: reserve about 12 in W x 18 in H x 3 in D for the same converter -> local-output-protection -> branch-block stack on the upper cabinet service face.9 in W x 5 in H service field immediately inboard of the 301EL-B for the current 8077 package and feeder sweep.8027 Slot MapThis is the current exact MVP branch allocation for the Blue Sea 8027.
8027 branch position |
Current use |
|---|---|
| Branch 1 | 15A GFCI / general outlets for the current front/cab + kitchen counter + sliding-door + garage/service convenience chain |
| Branch 2 | 20A induction branch |
| Branch 3 | spare / future ordinary-outlet split branch |
| Remaining positions | future expansion |
The Rixen ComfortHot electric element is intentionally not on the 8027. It is currently assigned to MultiPlus AC-out-2 through the local Blue Sea 7542 15A breaker direction above.