CrimpATI 12V Water Heater 300W
12V resistive immersion element for boat/van water tanks. 300 W ≈ 25 A continuous while heating; thermostatically cycled, so daily energy depends on use (default 1.5 h/day equivalent for warm-water rinse).
Open in Crimp →A sizing result with its assumptions attached.
Sized against ABYC E-11 — the US reference, and what Transport Canada accepts as an alternative to TP 1332 for pleasure craft under 24 m. The design current is the part's continuous draw. The Crimp engine applies its ordinary continuous-load headroom, voltage-drop budget, terminal clamp, and standard fuse ladder. The 9.8 ft one-way run is a stated reference, not a universal installation prescription.
The part the engine actually sees.
- Compatible systems
- 12 V
- Rated power
- 300 W
- Continuous draw
- 25 A
Terminal map
| Terminal | Polarity | Direction | Rating |
|---|---|---|---|
| + | positive | input | 35 A |
| − | negative | input | 35 A |
What belongs around it.
- 19.7 ft total of 8 AWG (10 mm²) marine cable
- Four 8 AWG cable lugs matched to the equipment studs
- 35 A fuse and holder on the positive run
- Heat-shrink, strain relief, and terminal boots sized to the cable
See what it changes in your system
With JavaScript enabled, describe your existing boat, van, or off-grid system here. The model supplies topology; Crimp's engine computes the attachment, resized runs, checks, and supporting basket.
What is known, assumed, and computed.
Catalog profile
The manufacturer, model, ratings and terminal map are maintained as planning data in Crimp's component catalog. Confirm the current manufacturer manual, exact revision and installed nameplate before ordering or wiring.
Engine reference
Sized against ABYC E-11 — the US reference, and what Transport Canada accepts as an alternative to TP 1332 for pleasure craft under 24 m. The published conductor, fuse and voltage-drop result uses the visible reference length and current basis; it is not a universal installation prescription.
Read the complete methodology →