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Re: Breakers how to
After considering the application work, determine the carrier on which the breaker will be installed. Gorilla Hammers has assigned a 'Recommended Carrier Weight' range to each breaker. If the operating weight of the carrier falls within this range, the carrier will safely handle this model of breaker. If the desired breaker falls outside of this recommended carrier weight range, the carriers lifting capacity and oil flow will need to be verified to ensure a proper fit.
Lifting Capacity: Provided the weight of the breaker does not exceed the maximum lifting capacity at any position, the carrier is assumed to be stable. On most loader backhoes and excavators, the maximum lifting capacity is lowest when the boom is at full reach. This is the value that must be compared to the operating weight of the breaker.
Oil Flow and Operating Pressure: A required oil flow range is specified for each breaker. Oil flow to the breaker within this range is adequate for operation. However, for maximum productivity the carrier should be capable of providing the maximum required flow. Compare the maximum oil flow requirement of the breaker with the oil flow capacity of the carrier. Remember the breaker operates at 1500-2500-psi. therefore, oil flow should be evaluated at operating pressure.
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A 30 amp circuit breaker or fuse is NOT a typical size used for the protection of convenience outlets & general lighting circuits, especially in a residential setting. In fact the National Electrical Code (NEC) prohibits anything larger than a 20 amp breaker to protect a #12 copper wire and and a 15 amp breaker to protect a #14 copper wire. These are the size wires used to supply nearly all outlet and lighting loads in a residence.
It's not clear to me from your question if this 30 amp breaker is a double pole type that is providing power to a second, smaller circuit breaker panel and these outlets are fed from it. This would be in line with what the NEC would allow and what I suspect is the situation. I'm only going to get into this a minimal amount as more information is needed for me to be able talk intelligently about it.
I would shut off the loads that are connected to the 30 amp breaker. If that is a panel, I would shut off all the circuit breakers in it, then turn onn the 30 amp breaker. If it trips, then there is a problem between the 30 amp breaker and the panel. You may have connected line cables to ground or neutral - and vice-versa.
Can you please explain in as much detail as possible what is connected to the 30 amp breaker? Is it a single pole (120 volts) or double pole (240 volts) circuit? What size wires are connect to the breaker terminal(s) What type of cable is connected to it? How many wires are in the cable assembly or pipes? What is the size of wires? If they feeds a second, smaller breaker panel, where do the wires terminate - into lugs on the top or bottom of the panel or terminals of a circuit breaker? What happened or changed to cause this circuit breaker to start tripping? Is this part of a new installation - and if so, was the wiring done by an electrician? Was the work inspected?
Please try to answer as many questions as possible. The more information you can provide will help me get you the best answer.
A 4,000 amp breaker that has tripped indicates a a load greater than 3200 amps has been connected continuously for an extended period of time. A 4,000 amp circuit breaker is rated to carry 80% of the load - or 3200 amps continuously. Up to 4000 amps may be carried for a short period of time. A 4,000 amp breaker that has tripped can be a warning sign of a major problem.
First, 4,000 amps is a substantial amount of current. The reason for the breaker tripping should be determined and cleared by qualified persons before attempting to reset. Many circuit breakers this size have internal motors to charge a spring mechanism to close the breaker. Unlike the much smaller 15 to 50 amp breakers in your electrical panel in your home, these circuit breakers are also not designed for repeated tripping and resetting.
Second, no one is going to tell you how to do this either on the web or even over the phone. It is simply too dangerous to simply go for a reset without checking and clearing the cause of the fault.
Third, you should contact an electrician that has experiencewith large, commercial or industrial electrical service equipment. Not every electrician knows how or has worked with equipment this large, so be sure to ask first.
You should be able to find this website useful in finding Mini Breakers for your Square D Panel . ( http://ecatalog.squared.com/alphabetical_listing.cfm ) And remember , you can put as many breakers in as the panel can hold . BUT >>> you cannot overload the panel for that which the busbars service was intended . Another words , if you have a panel rated at 200Amp , then at FLA's you can not supercede that rating .
If the breaker box is fairly new, most manufacturers have "slim breakers" that allow for a double breaker to be put in the same space as a full size breaker. There should be no change in performance or safety.
Can usually find them at Home Depot or Lowes, etc.
Thanks Steve! I hope this works for you. If you ever decide to change it for some reason, just follow the paragraph I first sent to you - and everything should work fine. Good Luck to you, and thanks for letting me know it's working for you. - Jim
Is there a battery in the scanner? It takes times to clear out the breakers and find the right one. Be patient. It could be defective? Start on the top of the breakers on either side and vertically slide it down to the bottom then up the other side. Make sure it touches the breakers just to the left or right of the switches on each breaker. Again, it takes up to a minute to find the right. Once in awhile it chooses the wrong one.
What you need to consider is horsepower not size. The horsepower requirement for a house is determined by the area of drainage connected to the sump, the depth to the groundwater, the depth of the basement, and a few other factors. A 1/3 hp pump is standard for most houses.
When breaking oversize material the breaker is expected to break the material down the middle into two pieces. This is optimum production. If the operator has to re-position the breaker towards the edge of the rock and gradually downsize the material, production rate slows down. To assess what size of breaker will effectively handle this application, the size and hardness of the material must be known. If a 4 cu. yard piece of hard rock (20,000 psi or greater) needs to be broken in half you will require a 7,500-ft. lb. or larger breaker. If a 2 cu .yd. piece of limestone (20,000 psi or less) needs to be broken in half you will require a 3,000 - 5,000-ft. lb. breaker.
This is the most critical factor in choosing the breaker size.
SMALL HYDRAULIC BREAKERS (HAMMERS): up to 1200-ft.lbs. (1627 Joules), are typically used in concrete and other light duty work.
MEDIUM HYDRAULIC BREAKERS (HAMMERS): 1200 - 4000-ft.lbs. (1627 - 5423 Joules) are used in both concrete and rock applications with limitations on the size and amount of material to be broken.
LARGE HYDRAULIC BREAKERS (HAMMERS): over 4000 ft. lbs. (5423 Joules), are typically used in rock and large scale concrete demolition projects.
When trenching, the breaker is expected to fracture a solid mass of rock into manageable pieces. The size of the material could be 100's of cu.yds, and the energy will be quickly absorbed. This is why it is recommended to work from a bench so the rock has somewhere to break out. We recommend when trenching in limestone or medium hard rock, to use a 3,000 - 5,000-ft. lb. breaker. When working in hard material we recommend a 7,500 - 10,000-ft.lb. breaker, and if high production is critical, a 13,500-ft.lb. breaker would be beneficial.