Crimp
Component folio · Engine · Bukh

DV20

Bukh DV20 — 20 HP / 14.7 kW @ 3000 RPM, 2-cyl 770 cc. 1.0 kW Bosch starter cranks at ~110 A (~220 A inrush); 55 A Bosch alternator standard. Heavy, long-lived Danish auxiliary — extremely common in Nordic sailboats and yacht-club rescue craft.

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Engine 20HP — Bukh DV20 · 3 terminals
01 — Reference run

A sizing result with its assumptions attached.

Conductor3/0 AWG95 mm²
Fuse300 Apositive run
Voltage drop1.0%9.8 ft one way
Design current110 A12 V system

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 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.

02 — Catalog specification

The part the engine actually sees.

Continuous draw
110 A
Rated output
55 A
Surge current
220 A
Canvas footprint
220 × 130 px

Terminal map

TerminalPolarityDirectionRating
Starterpositiveinput400 A
Alt B+positiveoutput200 A
Block GNDgroundbidi400 A
03 — Supporting parts

What belongs around it.

  • 19.7 ft total of 3/0 AWG (95 mm²) marine cable
  • Four 3/0 AWG cable lugs matched to the equipment studs
  • 300 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.