Standards-compliant calculators for marine electricians in NZ & Australia. Free, no signup required. Works on mobile.
Check IRD for your bracket.
10–20% is typical for a sole trader.
Dedicated calculators for marine electricians. Bookmark the ones you use most.
Shore power current draw, minimum breaker size and cable cross-section from vessel load. AS/NZS 3004.2.
Minimum cable size for 12V/24V DC circuits. Voltage drop check per AS/NZS 3004.2.