Not every electrical job in your home needs the help of a professional; for example, you may be able to replace a new ceiling fan on your own if you carefully follow directions and have some assistance it putting it into place. However, some electrical jobs may look very simple but are actually best left to a professional contractor so that they get done right and get done safely. Note a few of those jobs here and why they should only be handled by a contractor, so you know not to try to tackle them on your own.
1. Installing a new dishwasher
New dishwashers may advertise that they're very easy to install; they may say that you simply remove the front panel of the old one, disconnect the wires, slide it out, and then slide in the new. While this may seem simple enough, remember that you're dealing with electrical connections as well as water connections. If there was a water leak near electrical lines that were not connected properly, you could very well be electrocuted by going near that water. Having an electrical contractor ensure that this job is done right will mean reducing the risk of leaks and also ensure you aren't in danger if there ever is a leak or puddle.
2. Replacing frayed wires
If your home has frayed wires in any area, you might think you can simply replace them with something new. However, it's good to have an electrician handle this job, as he or she will be able to inspect the wiring and note why it's become frayed. If there is an overloaded circuit, your new wiring may wear out just as quickly. You don't want to ignore an electrical problem that will continue to damage your wiring, but instead, note the reason why the wiring is getting damaged and address that problem before you replace it.
3. Installing a split system air conditioner
A split system air conditioner is a smaller system than a central air unit, as it vents directly out a wall and isn't connected to your home's ductwork. This may make it seem like it's a very simple installation, but note that you need to vent the unit out the wall properly so it can drain any condensation that forms. You also need to connect the front unit or blower to its own circuit so that you don't continuously shut down circuits in your home. This can be very complicated and may involve new wiring, so it's best left to a professional electrical contractor.
If you're ever in doubt about whether you should make a repair yourself, don't hesitate to call residential or commercial electrical contractors in your area. It's better to have them take care of any jobs to ensure things will work properly and safely down the road.