That has to be a ground fault protection breaker. Lucky you! When it is off there will be outlets that don't light the test lamp you plug into the sockets around your home. Find and list the dead ones. Somewhere you have a waterleak into the socket or something connected to that breaker that has a water leak into it's electrical connections
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Tandem breakers, often called split breakers or double breakers, provide two separate circuits in the space of a regular sized breaker opening. Every circuit breaker panel has a limited number of circuit openings available. The problem is that when the openings are all used up and you still need to add another circuit, what do you do? You could change the electrical panel or double up circuits on a breaker, but this could place too much load on a particular circuit. So what then? The answer that many have found is a tandem breaker. This type breaker is the same size as any other breaker, but it has its difference. This breaker sports two smaller breakers built into one regular sized breaker. Each has its own breaker switch and the breaker snaps in just like a regular breaker. With this simple innovation, you can add a circuit and protect the circuit on its own dedicated line.
Either your breaker switch needs to be changed for a heavier one, the pool equipment needs to be put on an other circuit or better still one of its own.It is best to talk to an ellectrician about the delails involved.
A 32 amp fixture can not be fed from a 20 amp breaker as the breaker will trip every time.
One and half breaker system is an improvement on the double breaker system to effect saving in the number of circuit breakers. For every 2 circuits, 1 spare breaker is provided: Two feeders are fed from two buses via their associated circuit breakers and these two feeders are coupled by a third circuit breaker which is called tie breaker. During failure of any of the two feeder breakers, the power is fed via the breaker of the second feeder and main breaker (tie breaker).
The most common types of circuit breaker used are MCBs. (Miniature Circuit Breakers.)The most common type of breaker used in most every residence in the U.S.A. is the non-adjustable trip breaker.
This is properly understood when Ohm's Law is applied: Voltage, Amperege and Resistance are correctly applied to a circuit for it's correct function. The circuit breaker acts as a protective device and trips when a correct electrical circuit does not exist. The wrong breaker may have been installed. the wrong gauge of wire may have been used, the pumps and heaters may be drawing more amps then planned for or a short circuit or loose connection are all possible faults. Contact the electrician that installed the system for resolution of the problem or an outside electrician if the problem isn't corrected. Caution: Water and Electricity should not be trusted when in close proximity.
When several outlets are on the same circuit the current comes first from the breaker panel to one outlet where it is connected to a duplex receptacle and/or switch or light, then to the NEXT outlet, light or switch. If a connection was not made properly at any point along the way it can corrode or somehow loose connection back to the breaker panel. If that happens, every outlet DOWNSTREAM will not be working properly. If you cannot track down the problem yourself, you will need to hire an electrician.
Check the voltages on the other receptacles in the home. If you find other lower voltages go back and shut that breaker off. Go through out the house shutting off the breakers that have low voltage on them. If other ones are lower see if you can establish if the voltage drop is on the same bus breakers. These will be every alternate breaker. If the breakers that you shut off are every other breaker then the problem is with the incoming utility supply. Give them a call and get them to read the voltage at the meter base. If you can not find any other low voltages in the home then shut the breaker off to that circuit and change the receptacle out for a new one. If the voltage is still low after replacing the receptacle, it could be the breaker that is feeding that circuit.
An electrical breaker is dual function an electrical fuse just has one purpose.
If everything on the circuit is dead, I would start at the breaker box.Start with the simple stuff -trip and reset every breaker individually, not just the suspicious circuit or just the main. Sometimes, a breaker trips -but not to the extent that the tab flips to "off".If that doesn't work, leave the breaker on and, with a multimeter set to ACV, put one lead on the ground bar and the other on the screw head on the breaker. You should get a reading of 110V -if not 110V, then remove and replace that breaker.If you do get a 110V reading, the problem is an "open" in the circuit. Think of a circuit as a chain and the outlets/switches are the links. If a link is not connected, the remainder of the circuit (everything after the open) will not work. Start at the breaker box and trace the circuit to each of its connections at the switches and outlets. Remove the outlet/switch covers and peek inside the box to make sure the connections are secure. You can inspect the circuit with the power on or off. If you do leave the power on, use extreme caution while you're probing around -you might just find the open circuit the hard way!If you still don't find the open circuit, test each link (outlet/switch) separately, again starting closest to the breaker box.
If you're using a GFCI breaker then the entire circuit will be protected by just the breaker alone. Every receptacle, switch, etc on that breaker will utilise the GFCI protection. You may have problems with it tripping if you plug in a motor (vacuum, etc) on the circuit.