UL插头两芯和三芯分别用在什么电器上？

mrhqwf

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大家好！我想问一下，UL插头分两芯和三芯，分别是用在什么类型的电器上？是标准要求的还是客户要求？谢谢！

byl77

分等级吧?class 1或者class 2或 class 3

aiduoxi

跟产品走的

水中月

应该是看产品！

mrhqwf

煮蛋器，Class I，120V,350W，用什么UL插头？两芯还是三芯？

mrhqwf

老大们帮忙 解决一下，谢谢了！！！

ouychp

外壳无可触摸的导电物体就用2芯，比如胶壳的充电器，外壳有可接触的导电物体就用3芯，比如铁壳的充电器

往事如烟

一般I类电器，使用三芯；其它使用二芯。

ouychp

Class 1 Circuit. The portion of the wiring system between the load side of the overcurrent device or power-limited supply and the connected equipment. The voltage and power limitations of the source are in accordance with 725.21.
- B3 G9 F0 U# UClass 2 Circuit.  The portion of the wiring system between the load side of a Class 2 power source and the connected equipment. Due to its power limitations, a Class 2 circuit considers safety from a fire initiation standpoint and provides acceptable protection from electric shock.
Class 3 Circuit.  The portion of the wiring system between the load side of a Class 3 power source and the connected equipment. Due to its power limitations, a Class 3 circuit considers safety from a fire initiation standpoint. Since higher levels of voltage and current than for Class 2 are permitted, additional safeguards are specified to provide protection from an electric shock hazard that could be encountered.
725.21 class 1circuit classifications and power source requirements.
Class 1 circuits shall be classified as either class 1 power-limited circuits where they comply with the power limitations of 725.21(A) or as class 1 remote-control and signaling circuits where they are used for remote control or signaling purposes and comply with the power limitations of 725.21(B).
(A)    class 1 power-limited circuits.  These circuits shall be supplied from a source that has a rated output of not more than 30 volts and 1000 volt-amperes.
(1)    class 1 transformers.  Transformers used to supply power-limited class 1 circuits shall comply with article 450
(2)    other class 1 power sources.  
(B)    Cass 1 remote-control and signaling circuits.  These circuits shall not exceed 600volts the power output of the source shall not be required to be limited

mrhqwf

UL 3芯电源线最小的就是18AWG，晕，配上小小的煮蛋器，怎么看怎么别扭。做了样板了，客人看了也别扭，只好改2芯。