Electric drain cleaners, also called plumber's snakes, use the mechanical force of an electric motor to twist a flexible cable or spring in a clockwise direction and drive it into a pipe. Electric drain cleaners are commonly available with cable lengths of up to 40 metres and can go as far as 80 metres.(240 ft).
Advantages of electric drain cleaners include the ability to clean long sections of sewer drain, the ability to remove solid objects such as tree roots and jewelry, and ready availability through hardware stores and tool rental counters. Machines using springs can easily negotiate multiple 90 degree bends while maintaining their effectiveness and without damaging the pipe.
Disadvantages of electric drain cleaners include high relative cost and weight, and the considerable physical effort that may be required to control the cable.
Safety considerations for electric drain cleaners include the requirement to wear work gloves and eye protection, to carefully control the cable during operation to avoid overstressing it, to use appropriate caution when working around rotating machinery, and to use properly grounded electrical outlets.
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