Wattson's Off-Grid Wire Sizing Helper

Before you buy a single spool of wire, run your circuits through this simple helper. A few minutes here can save you hundreds of dollars—and one nasty "why is that wire smoking?" surprise.

Lock In Your Plan (Optional, But Smart)

Drop your name and email so Wattson can send you simple off-grid checklists and "don't screw this up" reminders. No fluff. No woke nonsense. Just practical survival wiring wisdom.

Yes, send me simple off-grid planning tips, checklists, and "don't do this" warnings from Wattson.

Got it. Wattson's stashing your plan and will send you simple off-grid wiring tips. Hook this up to your email service to make it real.

1 Basic System Info

Pick the voltage this circuit will run on. If you're not sure, choose whatever your inverter or battery bank uses. You can always refine later.

System Voltage

2 Circuit Details

Think in plain English: "Well pump," "Fridge," "Cabin lights." Name each circuit so you know what the wire is actually feeding.

Circuit Name

Load (Watts)

Distance (Feet)

Wire Material

Wattson can't read minds. Fill in all the boxes before hitting "Calculate."

3 Suggested Wire Sizes

Circuit Name	Approx. Amps	Suggested Wire Size	Status

Wattson's Tip

When in doubt, go thicker. Undersized wire is like a cheap extension cord on a space heater—fine until it isn't, and then it's too late.

Print this page and stash it in your solar binder. When the internet's gone and the grid is dead, paper still works.

This helper gives rough planning guidance only. It does NOT replace electrical code, permits, or professional advice. Always verify final wire sizing with your local requirements and a qualified electrician.