What is the term for when an electrician approaches the limit within which a person could receive a second-degree burn if an electrical arc flash were to occur? are flash boundary limited approach distance are protection boundary restricted approach boundary

## Step 1<br />The problem is asking for the term that describes the limit within which a person could receive a second-degree burn if an electrical arc flash were to occur. This is a safety-related term used in the field of electrical engineering.<br /><br />## Step 2<br />The term "arc flash boundary" refers to the distance from the electrical source within which a person could receive a second-degree burn if an electrical arc flash were to occur. This term is used to describe the potential danger zone around an electrical source.<br /><br />## Step 3<br />The other options, "limited approach distance", "arc protection boundary", and "restricted approach boundary", are not standard terms used in this context. They do not accurately describe the potential danger zone around an electrical source.