ABSOLUTELY!!!

You must wire them correctly. Swapping hot and neutral can be disastrous.

I don't want to sound alarmist but people do die because of these mistakes.

Go to the hardware store. Spend $5. Buy a plug tester, orange block with three (maybe two) neon lights. Plug it in every one of your sockets. Find out if your grounds are good, if you hot and neutral are swapped, etc.

It's $5. Small $$ for useful information.