1 If you managed to touch the line terminal with one hand an

1. If you managed to touch the line terminal with one hand and the neutral terminal with the other hand, would a GFCI trip and protect you from electrocution?

2. What does pushing the test and the reset buttons on a GFCI outlet do?

3. What does PPE stand for and where is it used?

4. Briefly describe Arc Flash. How can it be prevented? How can you protect against it?

5. What type of fabrics should you wear when working around electrical devices and what types should you avoid?

Solution

1. Severe electric shock or death can occur if you touch the hot and neutral conductors in a GFCI-protected circuit at the same time because the current transformer within the protection device won\'t sense an imbalance between the departing and returning current and the switching contacts will remain closed.

2. The current returning to the power supply in a typical 2-wire circuit will be equal to the current leaving the power supply. If the difference between the current leaving and returning through the current transformer of the GFCI exceeds 5 mA , the solid-state circuitry opens the switching contacts and de-energizes the circuit.

3. PPE stands for Personal protective equipment, is equipment worn to minimize exposure to a variety of hazards. Examples of PPE include such items as gloves, foot and eye protection, protective hearing devices (earplugs, muffs) hard hats, respirators and full body suits.

Since Hazards exist in every workplace in many different forms: sharp edges, falling objects, flying sparks, chemicals, noise and a myriad of other potentially dangerous situations, so these PPE are used respected work place.

4. Electricity can jump through the air which is also known as arcing. Arc falshes can occur when there is a electrical faults and energised conductors are shortcircuited and grounded.

5. Use - Flame resistant clothing; Consider wearing clothing made of flame-resistant cotton or wool blends. The fabric should have a smooth, tightly woven finish.

Avoid - Avoid clothing made of nylon, polyester acetate, or acrylic fibres