Check each extension cord before use
Ensure that the extension is completely free from cracks, tears, or abrasion and that power extension cables haven't been knotted, which can cause conductor damage and increase the risk of shock or fire.
Keep extension cords in a safe place
The force of you stepping on your extension cords can cause the conductor to break, a problem that can lead to electrical fires. Because it occurs in the core of the cable, conductor damage isn't always obvious to the eye, so play it safe from the start by guarding the cords with heavy-duty cord covers.
Ensure that all electrical components stay dry
It's one of the key rules of electrical safety: don't mix electricity and water. Store power tools and cables above water level when not in use and never use electrically powered tools in a wet environment.
Never modify electrical plugs
When using any home appliance, under no circumstances should you modify an electrical plug so that it will fit into a socket - doing so only increases the likelihood of shock, electrocution, and fire.
Use the right extension cord for the job
Before you plug in, make sure that the wattage rating of the extension cord you're using is greater than the power requirement of the equipment it's powering. Using an extension cord to supply more wattage than it's rated for can cause conductor strain, overheating, and possibly even fire.
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