Electrical plan audit: step-by-step checklist for hidden costs

What is an electrical plan audit and how long does it take?

An electrical plan audit is a focused review of your wiring, loads, protection, and labour estimates to reveal hidden costs. A basic audit can take 1–3 hours; a full subsystem audit with calculations and a cost rework can take 3–6 hours.

How do I size fuses and wire for continuous loads?

Sum steady currents on a circuit, multiply by 1.25 for continuous loads, then choose a fuse at or slightly above that number and a wire gauge whose ampacity covers the fuse at the installation temperature and run length.

Should I pay a pro or DIY the electrical work?

Compare the pro labour estimate to your realistic DIY hours multiplied by the value of your time plus the cost of tools and test equipment. Hire a pro for complex charging systems, fridge circuits with high start currents, or if you lack testing experience.

Can Van Heda help during an electrical plan audit?

Yes. Van Heda helps you group and total subsystem costs, attach photos of parts and runs, and track labour estimates so you can see the budget impact of changes while you audit.