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Do you need to use power tools outside your home or in the garden shed? Then extension power cords could help you to extend your reach to those areas where you don't have access to a power plug. Extension power cords come in different shapes and sizes and it is important to pick the correct type to avoid electrical injuries. The two main determinants are the length and gauge of the wire. The length of the wire is important because the voltage reduces along the length of the wire because of the distance it has to travel. The gauge or thickness of the wire determines the current it can provide. The gauge is usually expressed as a figure, with a smaller figure translating to a thicker wire carrying more current. If you are shopping for extension power cords, you should pick the correct type you need for the appropriate task. Most power tools require varying amounts of amperage or wattage to function properly. For example, tools such as a table saw would need more power than a simple drill. Extension power cords should have a rating that supports the power tool required. A smaller gauge or higher rating is required for tools consuming the most power. For example, an 18 gauge cord can supply most household appliances such as lights whereas a 10 gauge cord is mainly used for heavy duty power tools. The other factor to consider with extension power cords is the length, as power is lost as heat when it is conducted through a longer cord. Inappropriately long cords could lead to damage to the extension power cords and the tools attached to them. Most cords come in lengths of 6 feet, 9 feet and 12 feet. Extension power cords should all be certified to meet the National Standard (eg the CSA or Canadian Standards Association). The CSA provides product testing and certification for various electrical devices. Broken extension power cords or those with bare wires are dangerous and should not be used as they could be a potential electrical hazard. If there are cracks in the outer insulation sheath then the cord should be either repaired or replaced. Used correctly, extension power cords are excellent ways of extending electricity to areas away from the main electricity supply or outdoors. It is great for supporting garden tools such as lawnmowers and hedge trimmers. Some extension power cords have multiple outlets which can supply different devices. In the home situation, this is useful because you can supply power to multiple devices such as computers, printers and phone chargers simultaneously. In summary, extension power cords are enormously useful in extending electric supply to areas outside the main facility. When looking for good extension power cords, it is important to choose an appropriate cord with the right length and gauge for the job. All cords should be certified to meet the National standard. The cord should give the support the wattage required for the power tool. Extension power cords with multiple outlets are also useful for supplying different electrical appliances simultaneously. For more information click here: GE 51954 12 feet Extension Cord - White