This is the final post in our four-part series, "The Secret Guide for Super Moms” — tips, tricks and hacks for busy moms who need to know everything that’s happening in their house.

If you believe Pinterest, every home repair or improvement project can be a do-it-yourself job. Apparently, if every blog is to be believed, moms and dads around the country are remodeling bathrooms, rebuilding old houses and refurbishing vintage furniture -- and they do it all the time! And they look great doing it! And they have plenty of time to take lots of photos!

Maybe some people really are able to do it all (and write about it, too). Most of us are too busy and simply don’t have the training to do more than the basics around the house. When it comes to potentially dangerous repairs, a super mom knows that she needs a professional. When the time comes to fix, rewire or repair her home’s electrical needs, she knows she needs an electrician.

Electrical wiring is complicated and can be dangerous -- and it's tough to spot signs you need an electrician. An amateur electrical job may cause poor wire connections, overloaded circuits or faulty grounding. These situations are hazardous to you, your family and your property. While it may be tempting to try saving money by doing it yourself, or trusting your spouse or a friend to help, you're better off spending the money to have the job done right.

Let's take a fairly common scenario: your fuses keep blowing, or your circuit breakers keep tripping. Yes, you can keep replacing the fuses, but do you know whether they're the right type? Screwing in a 20- or 30-amp fuse as a replacement for a 15 is tempting—no electricians needed, right?—but now you've created a fire hazard by overloading your wiring. The smarter move: call a professional, certified electrician to wire a new circuit.

Like fuses, circuit breakers are meant to prevent circuit overload and the risk of fire, but we use much more electricity than people of our parents' or grandparents' generation. As you upgrade and add appliances and gadgets, you may need to upgrade your circuit breaker panels to adequately supply your home with power. Hire an electrician to do the job, not your brother-in-law who swears he did the same kind of work in the navy. The work is extremely complicated and should not be attempted by an amateur.

Automation lies at the core of much of our modern lives. However, it evolves at radical speeds. The simple concept, to build a machine to perform a task without human intervention, was the engine of the industrial revolution. Now that concept is the driving force behind robotics, self-driving vehicles, and a wide range of advanced technologies.

Most automated tasks are part of a closed-loop system. This system is designed so that the outputs are monitored and fed back to the controller. The controller changes its operation as needed. An example of a closed-loop system is a home thermostat, which monitors the air temperature. When the low set-point is reached, a contact closes in the thermostat, beginning a furnace lighting cycle. As the furnace runs, the room air temperature increases until the high set-point is reached. The contact opens and ends the furnace burn cycle. This is automation.

With electrical relays, it is possible to achieve a variety of automatic functions. A motor starter uses a relay to close a contact that sends electrical power to a motor. In addition, it closes a set of auxiliary contacts that keep the main relay closed. A control mechanism, such as a temperature input or a stop button, can be wired in series with the auxiliary contact. This allows for control of the motor. An expansion of relay logic is the programmable logic controller or PLC. Instead of mechanical relays, a PLC uses a set of input and output contacts connected to a computer controller. Software in the controller then dictates how the inputs and outputs interact. They additionally execute specific patterns of operations, based on programmed ladder logic.