The WF-8735-AD and WF-8740-AD use WFCO's larger 8700-series power-centre layout. Their manufacturer drawing identifies the AC circuit-breaker area on the left, cooling fan and converter connections in the centre, and the 12V DC fuse board at the right.
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.
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 |
|---|---|
| Main breaker and hold-down | 30A AC main position on the left of the cabinet |
| Shore-power terminals | Hot, neutral and chassis-ground connections |
| AC ground terminal bar | Equipment ground termination |
| AC neutral bar | Neutral return connections |
| Converter AC leads | Three identified converter supply conductors |
| Cooling fan | Ventilation fan in the power-centre converter assembly |
| DC fuse board | Six DC circuits including the battery position |
| F1–F4 | General-purpose DC positions up to 20A |
| F5–F6 | Higher-current positions up to 30A, per manual |
| Battery lead and negative bus | Red battery positive and white negative return |
| 8735 reverse protection | One 40A reverse-polarity fuse |
| 8740 reverse protection | Two 30A reverse-polarity fuses |
Match the exact power-centre model
Both models provide six DC fuse circuits: five branch circuits and one battery connection. The F5/F6 positions can accept up to 30A fuses as specified in the manual, while four general-purpose positions have a 20A maximum. The reverse-polarity protection is different: 8735-AD uses one 40A fuse; 8740-AD uses two 30A fuses.
| Original model | DC output | Reverse-polarity fuses | Details |
|---|---|---|---|
| WF-8735-AD | 35A | 40A × 1 | Six DC circuits |
| WF-8740-AD | 40A | 30A × 2 | Six DC circuits |
Choose the model by the original WFCO label, output demand, enclosure size and wiring arrangement. A 40A model is not a drop-in replacement merely because the 35A unit looks similar. WFCO documents a 30A AC main and provision for up to five branch circuits with compatible duplex breakers.
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.
