商場舖電箱掛錶 [下集-安裝及測試實錄 (導演剪接版)] 尋線 / 按工作守則-配電箱核心7組件 / 絕緣電阻測試詳細 / 電工進階 / 電工深造 | KC148 / KC149 / KC162

Retail Shopping Electrical Distribution Board & Metering [Part 1: Application Flow Intro (Director's Cut)] Circuit Identification / According to Code of Practice (CoP) guidelines: 7 Core Components of a Distribution Board / Insulation Resistance Test Details / /Advanced Electrical Work | KC148 / KC149 / KC162