Is a 2 pin plug safe to use?

Answer 1

This depends on what device you use, and where you are using it. If you have a grounded outlet, it is always advisable to use a grounded (3 prong) device over a non-grounded (two-prong) device. Grounding a device has several main benefits. In high current devices, grounding prevents accidental electrocution and dangerous surges. In low current or highly sensitive devices, it protects from current spikes, prevents problems due to static electricity, and decreases electromagnetic noise. In most devices that aren't high-current (like a toaster), or high-sensitivity (like a computer); there is not much of a benefit.

Answer 2

It depends on the electrical system and voltage of the country where you are using the plug. Some countries use 2 pin plugs with lower voltage appliances that are safe to use. However, for higher voltage appliances, a 3 pin plug with grounding is generally safer.