WFCO's 8900-AD power centres combine RV AC distribution, a converter/charger and an eleven-circuit DC fuse board in one enclosure. The manufacturer's labelled diagrams show the breaker stub bar, battery connections, reverse-polarity fuses and converter main-board assembly, making it easier to identify the model before replacing a power centre or service component.
Original manufacturer wiring and fuse diagrams
Use the manufacturer's labelled illustration to locate the AC distribution compartment, converter and DC fuse-board connections. This is an electrical layout reference, not an exploded parts drawing.
Open the manufacturer's PDF to zoom in on the labelled components.
Open the manufacturer's PDF to zoom in on the labelled components.
What the diagram labels identify
The listed components describe the connections and accessible parts in the original manufacturer drawing, rather than standalone replacement-part numbers.
| Diagram component | Function and identification |
|---|---|
| AC main breaker | Main breaker and retainer at the top of the enclosure |
| AC breaker stub bar | AC branch breaker connection point |
| AC neutral bar | Neutral wire terminations |
| AC ground bar | Equipment grounding conductor termination |
| Converter AC hot | Converter branch supply and breaker pigtail |
| Main board assembly | WF-8900-AD-MBA converter assembly in the lower enclosure |
| Battery positive lug | POS+ house-battery input connection |
| Battery negative connection | NEG- circuit returning to the separate DC negative bus |
| Reverse-polarity fuses | Protection near the DC board battery and converter connections |
| F1–F9 | Nine general DC fuse positions, maximum 20A each |
| F10–F11 | Two higher-current DC fuse positions, maximum 30A each |
| Fuse indicator LEDs | Red indicators adjacent to DC circuits |
| Optional output connectors | Drawing distinguishes screw terminals from optional WAGO block |
Match the exact power-centre model
Although WF-8935-AD, WF-8945-AD, WF-8955-AD and WF-8965-AD have a similar front layout, their outputs and reverse-polarity fuse arrangements differ. Two DC positions, F10 and F11, are rated up to 30A; the other nine are rated up to 20A. The manual identifies a 30A AC main and up to nine branch circuits when compatible duplex breakers are used.
| Original model | DC output | Reverse-polarity fuses | Details |
|---|---|---|---|
| WF-8935-AD | 35A | 40A × 1 | Complete power centre |
| WF-8945-AD | 45A | 30A × 2 | Complete power centre |
| WF-8955-AD | 55A | 40A × 2 | Complete power centre |
| WF-8965-AD | 65A | 20A × 4 | Complete power centre |
The converter main-board assembly (MBA), AC breaker section and DC fuse board serve different functions. WFCO lists model-specific converter assemblies, so a board identified for one amperage must not be substituted solely on housing appearance. The complete models linked below are not replacement boards.
NewRVParts product photographs
Compare these catalog photos with the full manufacturer model number on your installed unit. A complete power centre and a replacement converter section are different products, even when they share an output rating.
