I am not familiar with a Sunterra Pond, but the water involved gives a clue that there is an unintended path to ground likely caused by moisture. Typically the pumps use in such applications are watertight in the electrical connection area. If it is a submerged pump you may have a leak. If it is not a submerged pump you still can have a moisture problem. Check all areas where electrical connections are made. Dry out all electrical parts and plug into GFCI away from the water and see if you still have the problem.
A GFCI is not an overcurrent protection device. It only protects people from electrical shock. However, if you were to create a perfect hot to neutral short the GFCI would not trip and the panel breaker would.
In a word NO, that will not cause either GFCI to trip. The correct term is GFCI (Ground Fault Circuit Interrupter)
the oulets yes the switches would be a no
The trip time for a GFCI is from 15 to 30 milliseconds.
GFCI receptacle are designed to trip on 5 milliamps.
Yes. NEC 2005 440.21
Most probably the receptacles downstream from the GFCI would not be protected by the GFCI receptacle.
Deoends on code you are governed by. In USA, a GFCI outlet or a circuit controlled by a GFCI circuit breaker would be required.
A GFCI is not an overcurrent protection device. It only protects people from electrical shock. However, if you were to create a perfect hot to neutral short the GFCI would not trip and the panel breaker would.
Not if the GFCI breaker is supplying the circuit you are wanting to put the GFCI receptacle into.
GFCI Breakers are quite a bit more expensive than a GFCI outlet. More often than not a typical residence will need only a handful of GFCI outlets that combined together will be cheaper than a GFCI breaker. If you need to protect a series of outlets with GFCI protection you can simply connect the rest of the outlets on that same circuit downstream from the first outlet on the line and make that the GFCI. All you have to do is connect all the other outlets to the LOAD side of the GFCI outlet. If a GFCI fault occurs in any of the outlets down stream they will trip that very first GFCI plug you placed and keep you safe.
Yes.
what is the type of pump three phase or single phase
Yes you can. Lots of blow dryers have GFCI protection built in.
In a word NO, that will not cause either GFCI to trip. The correct term is GFCI (Ground Fault Circuit Interrupter)
There are tow places to put a Ground Fault Circuit Interrupter. There is a GFCI breaker which would be installed in a breaker box and a GFCI outlet that can be installed anywhere. Most GFCI outlets allow you to connect regular outlets to the GFCI and those outlets will also be protected.
Since GFCI's are more expensive, you wouldn't want to use them in any place where they are not required. In many old homes, GFCI's are sometimes used for outlets in bedrooms and living rooms where proper grounding is necessary (for computers, TV's, other electronics), but not available because of the age of the wiring. You would also want to avoid cramming a GFCI into a box that is too small to accommodate the bulkier GFCI outlet. You should first replace the box to a larger one.