2021 L2 Engineering Power Tools

Describe/ Explain what is a mains powered power tool

Mains electricity is the general-purpose alternating-current electric power supply. In New Zealand, the Mains voltage is 230V. Which is an alternating current (a.c.) This means that the current is constantly changing direction. Which means it changes direction and back again 50 times per second. Mains powered tools are the tools Mains power can only be used on (eg not battery-powered tools). 

Three mains-powered tools that I have used are.

Belt Sander

Air Compressor

Grinder

Describe/explain the task you used it for.

Power tools are used in industry, in construction, in the garden, for housework tasks such as cooking, cleaning, and around the house for purposes of driving (fasteners), drilling, cutting, shaping, sanding, grinding, routing, polishing, painting, heating and more.

What to look for….
What do I do if something is? (Fault Reporting )
Check the handle and body casing of the tool for cracks or other damage. If the tool has auxiliary or double handles, check to see that they installed securely. Inspect cords for defects: check the power cord for cracking, fraying, and other signs of wear or faults in the cord insulation. If your tools won’t start, it could hint at some larger electrical problems, including a short or part malfunction. Your tool starts but the power level is so weak that you’d probably be better off with a manual screwdriver. Or handsaw. Or bicycle pump. When your power tools lose their oomph (and it’s not a low battery), the most likely cause are old, worn carbon brushes that need replacing. The carbon brushes are the small carbon blocks that transfer the electrical current from your power source to the tool’s motor itself. These wear out through use. If your tool is losing power and doesn’t have the speed or strength it should, it could be an indicator that it is time to replace these parts.

What is meant by “RCD” Why is it important
RCD stands for Residual Current Device. It is a device that is designed to prevent any fatal electric shocks if you touch anything that might be live. Such as a bare wire. An RCD will most likely be used in the workplace, or at home.

What is double insulation?

Appliances and tools of this type are called "double insulated". They have two levels of insulating materials between the electrical parts of the appliance and any parts on the outside that you touch. ... Double insulation construction of appliances and tools allows the manufacturer to produce a lower-cost product.

Hazards of extension cords.

Why are extension cords a safety hazard? If the extension cord is covered, heat is unable to escape and could result in a fire. Make sure extension cords are visible and if at all possible, not running across highly trafficked areas. They can be a trip hazard for people walking through the area.

PPE when using mains-powered tools.

Always wear appropriate PPE to protect you from the specific hazards presented by power tools, such as dust exposure and projectiles. PPE such as goggles, dust masks, gloves, hard hats, and safety boots should be worn where appropriate.