# TNB Issues Critical Safety Advisory on Residential EV Charging Risks
*Author: Solar PV Expert | Category: news | Published: Wed Jun 10 2026 11:02:17 GMT+0000 (Coordinated Universal Time)*

### English
* **Rising Electrical Incidents:** Tenaga Nasional Berhad (TNB) reports an increase in blown cut-out fuses and electrical overloads caused by incorrect EV charger installations in domestic homes.
* **Core Risk Factor:** Many incidents occur in single-phase homes (5 kW supply) attempting to use 7 kW chargers without adequate electrical capacity.
* **Regulatory Compliance:** Installations must adhere to the Electricity Supply Application Handbook (ESAH v3.1) and Suruhanjaya Tenaga (ST) guidelines.
* **Safety Recommendations:** 
    * Homeowners charging at 7 kW should upgrade to a three-phase supply.
    * If remaining on single-phase, limit charging current to 3–4 kW (16–20A).
    * Install smoke detectors near main fuse boards, especially in homes over 20 years old.
* **Professional Assessment:** Every home requires an individual evaluation of its current supply, distribution board condition, and household load before EV charger installation.

### 中文
* **用电安全隐患增加：** 国家能源公司 (TNB) 指出，因家用电动车充电器安装不当或超出电力负荷，导致保险丝烧毁和过载的事故呈上升趋势。
* **主要风险点：** 许多事故发生在单相电（5 kW）家庭中，在未进行电力扩容的情况下盲目安装 7 kW 充电器。
* **合规性要求：** 充电器安装必须严格遵守《电力供应申请手册》(ESAH v3.1) 及能源委员会 (ST) 的电动车充电系统指南。
* **安全建议：**
    * 若需进行 7 kW 充电，建议升级至三相供电系统。
    * 若维持单相供电，应将充电电流限制在 3–4 kW (16–20A)。
    * 建议在电表箱附近安装烟雾探测器，特别是屋龄超过 20 年的住宅。
* **专业评估：** 在安装充电器前，必须对家庭现有的供电能力、配电盘状况及整体用电负荷进行个体化评估。