What it does
A pen-style tester indicates electrical conditions according to its design and rating.
Try in the lab
Identify its markings with an instructor; a pen tester alone must not be used to prove a circuit safe to touch.
Before you begin
- Identify the exact model supplied and read its manufacturer instructions.
- Inspect the item, connections and work area with your instructor.
- Match power, accessories and protective equipment to the actual task.
- Record observations and stop if the equipment behaves unexpectedly.
