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Real-Life Activities

Real-Life Math

You're doing the final inspection of the electrical work in a house built by a homeowner. It's part of your usual routine to do the basic tests first, to make sure you eliminate any major errors right away.

One of these basic tests is a voltage loss test. It calculates the amount of electrical current lost in traveling from the fuse box to the appliance drawing electricity. Too much voltage loss could mean the homeowner has installed the wrong gauge of electrical wire for the electrical current, and that could cause an electrical fire.

The allowable voltage loss for most voltage lines is about 3 percent. If this particular line carries 110 volts and your voltage meter says 104 volts are coming through, does it pass the test?