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fejn ikun meħtieġ, twapet jew gradi li ma jittrasmettux (non-conducting) għandhom jiġu pprovduti fuq quddiem u fuq wara tas-swiċċ-bord.
where necessary, non-conducting mats or gratings shall be provided at the front and rear of the switchboard.
最后更新: 2017-04-06
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