Despite their ground-ready, durable and insulated construction, submersible water pumps still present severe hazards for homeowners and should not be found in ponds intended for swimming or human immersion. The thing is simple: electricity and water do not mix. Therefore, installing a power submersible water pump for water gardens, natural ponds, or pools requires great skill and experience to prevent electrocution.
Manufacturers design submersible pumps to be safe. For example, they encase them in cast-iron housing built to isolate the electrical and working parts of the unit PWC. All cables are shielded and sealed by standard rubber. However, the casing and the rubber shielding doesn't guarantee that the submersible water pump won't ever have any connection with water.
The rubber water seals on a submersible pump contain no adhesive. Instead, they form the seal because of crimping method that tightens components within the pump. The seal insulates the interior of the pump from water, humidity, and outside air.
While this produces a advanced level of insulation, occasional seal failures can occur. A little malfunction can bring the interior of the pump into connection with the water garden or natural pond water. Caused by this malfunction will be electrified water within the pond.
Just like the primary elements of the pump, manufacturers head to great lengths to properly seal the cables. For example, they'll fill gaps with epoxy to avoid water from invading the unit. They also wrap the cables in a neoprene, which can be both air and watertight.
Epoxy is incredibly good at forming a waterproof seal. This seal won't fail unless it's subjected to some type of impact that could lead it to crack. If the seal cracks, water may get in to the cable. The exact same holds true for neoprene.
Regular Outlets vs. GFCI Receptacles
Both the National Electric Code (NEC) and OSHA require that all homes now contain GFCI receptacles in areas where water exists or potentially exists. These areas include bathrooms, kitchens, utility rooms, garages, and anywhere outside. GFCI receptacles prevent electrocution by cutting off the energy source when an unusual increase or “leakage” in power, that way caused when water makes connection with electricity, is detected.
Unfortunately, many older homes do not need GFCI receptacles. As a result, plugging a power water pump right into a regular outlet will make it susceptible to a power surge. It may also increase the danger of electric shock. Therefore, if you are using a power pump, you need to be sure that you plug it right into a GFCI receptacle or replace your old outlet.
Freezing Temperatures During the Winter
During the winter, it's recommended to get rid of the water pump from your water garden or natural pond. Winters in Illinois produce frigid temperatures that may plummet below zero. As a result, the water in an all natural pond or water garden may stay frozen through the season.
Frozen water will take its toll on a submersible water pump. Just one single freeze may cause the casing or the cabling to crack open, exposing the electrical parts. You might not spot the cracks due to the multilayers of the casing. Therefore, when you switch on the pump in the springtime, you may well be susceptible to electric shock.
Abrasives and Heavy Objects
Since most natural ponds or water gardens contain rocks, plants, sand, and other objects, it is important to make sure that they don't come right into connection with the water pump.
When placing your pump, make sure to isolate it from any heavy rocks, sharp objects, or metal objects. Also, if you are using sand, position the pump such that it is filtering the smallest amount of number of sand possible. Since sand is abrasive, it can harm the inner parts of the pump over time.
Never swim or wade in a lake with a Submersible Water Pump
You ought to never swim or wade in a lake or pool with a submersible water pump. Even though these pumps are made with many safety features, it's not worth the risk. There are special pumps designed for swimming pools and ponds that not carry this risk. If you need to enter your pond or pools with a submersible water pump to retrieve something or perform routine maintenance it is crucial that you turn fully off the electricity to the submersible pump and enter with caution.
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