"Everyone has weaknesses. I tend to be too nice sometimes. When vendors are not fulfilling their requirements, I believe there must be a logical and understandable reason. I have to remind myself that we are paying for a service, and they must meet our expectations, or our electrical projects suffer. I am making an effort to continue being nice but firm with the vendors when our requirements are not fulfilled."

You should know the company well before your interview. In this example, knowing whether or not the company does industrial or residential jobs would be helpful. If the company is more focused on residential, you may explain that you're a little less knowledgeable in three-phase power. Or, if you are new to the area, you might say you are still learning the local building codes but have a book at home, and you're reading through it currently.

You should avoid saying things such as: 'well, my wiring tends to come out twisted and sloppy.' It's evident at that point you have yet to perfect your craft. When you describe your weaknesses, be sure to explain what you are doing to turn those weaknesses into a strength.

"I believe I could improve some of my technical skills, including Excel and PowerPoint. Currently, I am at a beginner to intermediate level; however, I would be more comfortable at an advanced level. I have enrolled myself in an evening/weekend workshop for the next six weeks. We will see how stellar my skills are after that course!"