4 Commonly Replaced Parts That Electricians Should Always Have On Hand

When you are getting started learning to be an electrician, you might be overwhelmed at all the information. The complexity can range from relatively simple to very difficult. Starting out, it can be hard to know even what tools you will need or how to get started. If you are a student learning to work with electricity or a DIY enthusiast trying to get educated, this article is for you. The following is a list of the common parts and their purposes. 

4 Commonly Replaced Parts That Electricians Should Always Have On Hand

Circuit Breakers

To put it simply, circuit breakers prevent excess current from overloading the circuits of a building. When the switch on a circuit breaker is turned on, electricity can flow from the bottom to the top. If the current gets too strong, it charges an electromagnet inside the breaker. When sufficiently charged, the electromagnet pulls the switch closed, shutting off the connection and stopping the power. The exact kind of circuit breaker you will need for your project depends on the board and the specifications of the customer. Generally, it’s not a good idea to interchange brands of circuit breakers. However, every home needs circuit breakers to function properly. It’s never a bad idea to have some on hand.


Fuses are similar to circuit breakers, in that they prevent too much current from over-charging the home system. The primary difference is that, while circuit breakers can be used multiple times, a fuse works exactly once before you need to replace it. Fuses are generally faster at responding to problems and are also easier to buy and replace. Different electrical projects will call for circuit breakers or fuses. Though they serve a similar purpose, they are not interchangeable.


A transformer transfers higher voltage electricity to lower voltage. It allowed the high voltage that is passed through power lines to lower to a manageable level or your house or office. Many transformers are large, used as part of the city infrastructure. However, many others are small, used for a phone charger or a Knowing how a transformer works and what parts of it you might need to replace is essential.

This is just the beginning of things you might need as an electrician, but everyone needs a place to start. Your career will involve learning about many different devices and concepts, especially as the industry evolves. Just be sure to keep the essentials on hand for emergency repairs.