The ampere rating of wire would depend on the diameter, length and usage of wire for specific purpose. Without additional input to the question. it will be hard to give an accurate answer.
5.1v is the Voltage, You need to also look at what the Amperage rating is on the charger. 500ma, 1000ma, etc. How many Milliamps?
Wire size determines how much current can be safely conducted. Insulation type and rating determines other factors, such as where the wire can be used and maximum voltage. It should be noted that the high voltage lines that are hanging from the really large electrical towers are among a class of wires that have NO insulation around the outside of the wire. They are instead, connected to the towers with large insulators that prevent electrical energy from being lost through the towers.
A motor's service factor is a multiplier applied to a motor's horsepower rating to indicate the level of overload it can handle. The motor's nameplate amperage rating indicates the maximum current it should draw under normal operating conditions. The service factor does not directly impact the amperage rating, but motors with a higher service factor may be capable of handling higher loads and thus draw more current.
Typically, a 240-volt cord will have two hot wires, a neutral wire, and a ground wire. When connecting to the x and y terminals, the hot wires are usually connected. Ensure the wires are properly insulated and securely attached to avoid any electrical hazards.
I doubt if the 125 amp breaker will fit into a 100 amp box. This is due to the rating of the box only being rated at 100 amps. If this exchange could be made then the service conductors feeding the box must be upgraded to take the 125 amperage that the breaker will allow on the conductor.
It is ok to use a fuse with a higher amperage rating and not ok to use a fuse with a smaller amperage rating why?
The size of the conductor is in direct relation ship to its rating capacity of carrying a current. The larger the diameter of the conductor the larger the amperage rating capacity of the conductor.
The amperage rating for a typical ceiling fan is around 0.5 to 2.5 amps.
The maximum amperage rating for an 18AWG wire is typically around 16 amps.
The maximum amperage rating for the ceiling fan in this room is 2.5 amps.
The maximum amperage rating of the 20 amp switch is 20 amps.
The maximum amperage rating for 10 wire is typically around 30 amperes.
The maximum amperage rating for a 15 amp switch is 15 amps.
The maximum amperage rating for a 40 amp receptacle is 40 amps.
The maximum amperage rating for a typical dryer outlet is 30 amps.
The maximum amperage rating for a standard electrical outlet is typically 15 or 20 amps.
The maximum amperage rating for a 15 amp extension cord is 15 amps.