No, you do not need a plumber to change a bathroom fixture. If you are not experienced with repair, it would be in your best interest to hire a plumber. If you are experienced, however, there are many sites online that will instruct you on how to change the fixture.
No
Use a drain cleaner such a Liquid Plumber first. If that doesn't resolve the issue you may need to rent a pipe-snake to break up the clog. You could also call a plumber, however renting a pipe-snake is generally cheaper than a plumber.
To change a kitchen faucet, you will need a wrench, pliers, plumber's tape, and a new faucet.
Ballasts can be quite different even if you order a replacement part for a specific fixture. You need to follow the wiring diagram on the new ballast. If this is confusing or not easy to follow, you need a competent electrician to do this for you.
To change a recessed light to a pendant light, you will need to remove the recessed light fixture, install a pendant light fixture in its place, and connect the wiring according to the pendant light's instructions.
To change a light fixture to an outlet, you will need to turn off the power to the circuit, remove the existing light fixture, install a new electrical box, connect the wires to the outlet, and secure the outlet in place. It is important to follow safety precautions and consult a professional if needed.
Look at the wattage capacity of the fixture. Some fixtures are limited to 65 watts, some can take much more. If you use a larger bulb than what the fixture was designed for you create a fire risk. If you need to use a larger bulb but the fixture is limited to 65 watts, you need to change the fixture.
Not at all. Home handymen can attempt this simple repair themselves.
We have a leaky drain and I need to hire a plumber. How would I go about finding a qualified plumber?
You need to use the appropriate wattage and type of light bulb recommended for your fixture. Check the fixture's label or manual for the specific requirements.
It can be dangerous my dad does it but you need to turn the power off.
You will need to have this type of work done by a certified plumber. THis work must be up to code or you will face fines.