Some appliances or plugs have three prongs while others have four. Some people think that the presence of the fourth prong might make it dangerous to use adapters with these devices because of a danger of accidental shock. Others say that wearing an adapter at all is not necessary because some appliances allow you to plug them into any three-prong outlet.
1) Four prong to three prong adapters:
The first thing you should know is that the fourth prong on the three-pronged plug is grounded but not hot. This means that your dryer will still work even if you plug it into an adapter with no fourth prong. The outlet will be able to handle the machine’s demand for power because of the grounding plug (the three prongs).
2) Flexible prongs:
Another thing to keep in mind is that the prongs of a grounded plug have flexible metal arms. These arms are the part that connect the prongs to the outlet. This way when you push or pull on any plug, no matter how it is plugged in, there won’t be any danger of shock or electrocution. The only time this might not be true is if you pry on an adapter with a screwdriver or something to break off the grounding plug.
3) No danger with 3-4 prong adapters:
If you are still worried about using an adapter, just know that it is perfectly safe to use 3-4 prong adapters. The only time you might run into trouble is if the flexible prongs do not bend because of a break in their continuity. There will be no danger if the prongs bend but stay in contact with the outlet.
# What is the difference between 3 wire and 4 wire 220v?
- 4 wire is more secure than 3wire.
# Do I need a 4 prong adapter for a 3 prong dryer?
- Yes because they are not configured the same. The only time that you would not need the adapter would be if the dryer was hard wired with 4 prongs.
# Why do some plugs have 4 prongs and some have 3?
- All plugs in the US are required to be grounded. Meaning that even if you have a 3 prong plug, it will still be grounded.