弱電工程在工作時是不允許外殼帶電的，但當弱電設備的絕緣部分損壞時，就會使其外殼帶電，進而對人形成接觸電壓的現象。那麼，導致弱電工程的漏電原因有哪些呢?

1.電器採用的電路板自身有問題，如：電路板低壓電路沒和220V的交流電隔離，本身就帶有市電，採用開關電源的電路板相連產生的漏電多屬這種情況。但這些電由於電流較小，所以對人沒太大的危險性。

2.電路板本身沒問題，但某些元件漏電、或電路板受潮、灰塵太多等都會出現漏電現象。

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What are the reasons for the weak electricity project?

1. The circuit board used by the electric appliance has its own problems. For example, the low-voltage circuit of the circuit board is not isolated from the AC power of 220V, and the power supply itself is provided. The leakage generated by the circuit board connected with the switching power supply is mostly the case. However, due to the small current, these electricitys are not too dangerous for people.

2. The circuit board itself is no problem, but some components may leak, or the circuit board is damp, too much dust, etc. will leak.

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