Rewiring your home's electrical system to increase its capacity can be a complex project, but with proper planning and safety precautions, it's possible for a homeowner to do it themselves without hiring an electrician. In this article, I'll walk through the complete process of rewiring a home electrical system to handle more power, from assessing your current electrical load and service, to installing new wiring, circuits, and electrical panel upgrades.

Assessing Your Current Electrical Service

The first step is to understand your current electrical service and determine if it can handle more capacity or needs upgrading. Here's what to check:

Check Your Electrical Panel

Calculate Electrical Load

Check Voltage Drop

If your panel is maxed out and you're seeing voltage drop, your home definitely needs upgraded electrical service for more capacity.

Upgrading Electrical Service

If your current electrical service is inadequate, you'll need to upgrade for more power:

Install New Electrical Panel

Run New Wire to Circuits

Add 240V Circuits

Install Higher Amp Breakers

Adding More Circuits and Outlets

To increase capacity for multiple devices, add additional standard wall outlet circuits wired with 12 or 14 AWG NM cable:

Consider Arc-Fault and GFCI Protection

Doing It Safely

Rewiring an electrical panel and running new circuits has risks if not done properly. Follow these safety tips:


Rewiring a home electrical system with more power takes planning and care, but following proper guidelines helps ensure success. Adding more circuits, higher amperage breakers, and larger wire allows safe delivery of more electricity to power hungry appliances and devices. Just be sure to calculate your true needs, adhere to codes, and seek experienced help when necessary. With some diligent DIY work, you can upgrade your electrical service to handle the increased loads from modern living without outsourcing the entire project to an electrician.