Is everything on that circuit breaker not working? Breakers will go bad sometimes.
Get yourself an inexpensive receptacle tester (~$4.00 at hardware stores) and test each outlet. It looks like a plug with 3-4 lights on the end. It will diagnose simple problems (no hot, no ground, no neutral, reversed wires) and can aid in diagnosis.
A breaker trips when there is too much current. If you unplug everything on the circuit and the breaker still trips then you have a wiring problem or a bad breaker. From your description it is not possible to be certain if the problem started when you installed new outlet or previously. You have to describe your problem in better detail to get a good answer. When you have a circuit that trips the corresponding breaker, you need to go through each outlet on the circuit and rule it out as the problem. This can be done by pulling each outlet, from the wall and systematically remove wires from outlets while power is off and determining when problem goes away.
You need to identify specifically what is causing the breaker to trip. It could just be that you have to many devices or appliances on the circuit; or it could be a problem with the wiring, switches or outlets. Some steps to take. 1.) Unplug everything from the circuit. If it doesn't trip anymore you had too much plugged in. Identify what can be switched to another circuit. 2.) What device or appliance causes the problem? It is most likely something like a heater or something with a motor; or perhaps too many higher wattage light bulbs. 3.) If the breaker always trips when it rains, you may have a water moisture problem? 4.) If the breaker trips when nothing is connected it may be the breaker or a short in an outlet or switch.
The purpose of a circuit breaker in a panel is to protect the wiring and devices like switches, outlets and other devices that are part of that circuit. It isn't unusual to plug in an appliance into a circuit whose amperage rating is less than the breaker protection. If such an appliance doesn't have its own over-current protection it may well "fry" in an over current situation. However, if your 40 Amp device is directly connect to the 70 A circuit and has no over-current protection on its own you are risking a serious problem. If your 40 A device is on this dedicated circuit you should protect it with a properly sized breaker.
Are Danny Devito and Joe Devito related?
How old is Danielle cohn?
40 thousandths equals how many hundredths?
Do mother birds really abandon their chicks if a human touches them?
Are Joe devito and Danny devito related?
Do octopus have nipples?
What is slappy phone number?
What does chongito mean in spanish?
Where is the origin of the Panama hat?
Have you ever crashed a wedding or had your wedding crashed, if so what happened?
How many times did Joe Biden run for president?
What is the world’s oldest soft drink?
How many novels did Charles Dickens write?
What do the colors on America's flag mean?
How did Harry Houdini come up with his stage name?
What is modal fabric?
What does y2m mean in knitting?
What is distinction percentage in ICSE?
BA-28 which is a recommended water-skiing safety practice?
What happened to Simon o'brien's eye?
What is the sequence of the mRNA made from the gene TTACAGGTCCCA?
What is your primary responsibility when other boats are in your area?
What is Alan Hansen doing now?