Wiring an Electrical Circuit Breaker Panel: An Overview This article will provide an overview of how a professional electrician connects a residential electrical circuit breaker panel to the main service wires coming into the home, and to the individual branch circuits in your home. WARNING: This is not a DIY project for most homeowners. This is very dangerous work if you are not an expert, and in most communities, building codes may not evenAuthor: Timothy Thiele Do it yourself Home Electrical Service Panel Main Electrical panel – Make sure the ampere rating of the panel is the same as the ampere rating of the service cable providing power to the panel. Circuit Breakers – Take the cover off your existing panel ( Be careful not to touch any live power!) and check that the size of wire going to each breaker is the right size for each breaker.