Sockets are one of the materials we use for decoration and purchase, but many consumers do not understand enough about the difference between single-phase sockets and three-phase sockets, causing them to not meet the requirements for electrical installation after they buy home. So what are the differences between single-phase sockets and three-phase sockets? Today, we look at the difference between single-phase sockets and three -phase sockets with Xiaobian, for your reference.
A single-phase socket
The power supply voltage of a single-phase socket is ~220V, and its socket panel hole has 2 holes (1 fire wire and 1 neutral wire), and 3 holes (1 fire wire, 1 neutral wire, and 1 ground protection wire). There are also modular two. Three-hole sockets, with the same two-hole socket and three-hole socket.
Second, three-phase socket
The power supply voltage of the three-phase socket is ~380V, and the hole of the socket panel is 4 holes (connected with 3-phase fire wire and 1 neutral wire). The so-called phase line is usually referred to as the line of fire, the neutral line is usually referred to as the neutral line, and the grounding protection line calculates the usual PE line.
Third, how to distinguish single-phase socket and three-phase socket
1. Note that there are three sockets on the appearance of the socket is not necessarily a three-phase socket! If you pick up three power lines can be called three-phase!
2. Only two wires are connected, but there are three jacks in the appearance. Actually it is a single-phase socket, and the other hole is used for grounding. This is usually the case at home! (And usually speaking, this hole in the ground is not connected at all! It will not be grounded!)
3, three-phase power supply is subject to special approval, the cost is relatively high! The general household appliances are single-phase power, can not be indiscriminate, ah, immediately burned! However, if your home without any other machine equipment Your parents did not apply for a three-phase power supply to the power supply bureau. You may not have three-phase power in your home!
Editor's summary: The relevant information about the difference between single-phase socket and three -phase socket is introduced here for everyone. I hope this article will be helpful to everyone. If you still have something you don't understand, you can leave a message to Xiaobian at the bottom. We will answer your questions as soon as possible.
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Ningbo Safewell Plumbing Co., Ltd. , https://www.safewellbrass.com