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A submarine power cable is a transmission cable for carrying electric power below the surface of the water. [1] These are called "submarine" because they usually carry electric power beneath salt water (arms of the ocean, seas, straits, etc.) but it is also possible to use submarine power cables beneath fresh water (large lakes and rivers).
Submersible pump cables are electrical conductors designed for use in wet ground or under water, with types specialized for pump environmental conditions. [5] [6] [7] A submersible pump cable is a specialized product to be used for a submersible pump in a deep well, or in similarly harsh conditions.
Apart from size, the main technical difference between a "submersible" and a "submarine" is that submersibles are not fully autonomous and may rely on a support facility or vessel for replenishment of power and breathing gases. Submersibles typically have shorter range, and operate primarily underwater, as most have little function at the surface.
Most operate on propane or AC (two-way), while some add 12 volts DC (three-way). Three-way (powered) RV refrigerators draw too much current to be powered by the house batteries, but may run on 12-volt DC power while the vehicle engine is running, a generator is running or the RV is connected to shore power.
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Subsea technology involves fully submerged ocean equipment, operations, or applications, especially when some distance offshore, in deep ocean waters, or on the seabed. The term subsea is frequently used in connection with oceanography, marine or ocean engineering, ocean exploration, remotely operated vehicle (ROVs) autonomous underwater vehicles (AUVs), submarine communications or power ...
A cable landing station may or may not be required, depending on whether, for example, the submarine cable requires power in order to provide power to submarine repeaters or amplifiers. The voltages applied to the cables can be high—3,000 to 4,000 volts for a typical trans-Atlantic telecommunications cable system, and 1,000 volts for a cross ...
A small bathroom with a shower, sink and toilet is usually also located in the motorhome. On smaller motorhomes, the toilet may be of the "cassette toilet" type, which is a kind of portable toilet or container-based toilet. The toilet sometimes swivels to provide extra room and can be accessed from outside the motorhome for easy emptying. [3]