Simplified and cost-reduced components. Which conceived just not capable of delivering 2A not burned
Guess where China is at 1A, where a signature on 1.5 A
hassan_Ko answered on March 19th 20 at 08:51
The quality of the component. Chinese are often very stupid and not professional, the cheapest components matched and badly - from which to load such a large capacity dangerous - they burn, so do low-powered, but it does not save them from what is not durable. For example I had a power supply output To 12 volts and the condenser outlet was 12 In ie with no reserve, and given the scatter of the values of the voltages of the capacitor and jump on the network - within the hour I hear the sound of an exploding capacitor. Normal engineers put at least 16 In the condenser.
elvera78 answered on March 19th 20 at 08:53
Yes, it is easy.
The same transformers consist of copper wire - the more current, the more powerful transformer, it's the same with the harness, and it is more noble metals.
It is quite someone for some purposes might snap and block at 300mA, and someone and 10A is not enough.
All depends on price and needs.