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Student & Learning Zone - City & Guilds
RCD for Fault Protection
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<blockquote data-quote="Traineeboy" data-source="post: 517576" data-attributes="member: 32807"><p>We had a situation at work where a customer had a FCU fitted in the back garden after he had a house renovation. He planned to have power to his shed down the bottom of the garden. </p><p> </p><p></p><p>He took the ZS from the FCU and it was 1.08 ohms. This means that adding 25m of cable would take it over the 80% of the 32A MCB. </p><p> </p><p></p><p>The customer wants to add 2 sockets and a light that would not exceed 13amps. The chap I was with said it’s not ideal but power could be put to the shed from the FCU as the RCD would cover it for fault protection.</p><p></p><p>I understand this is true but if we know it won’t meet ZS of the MCB should we plan to be reliant on the fault protection on an RCD ? </p><p> </p></blockquote><p></p>
[QUOTE="Traineeboy, post: 517576, member: 32807"] We had a situation at work where a customer had a FCU fitted in the back garden after he had a house renovation. He planned to have power to his shed down the bottom of the garden. He took the ZS from the FCU and it was 1.08 ohms. This means that adding 25m of cable would take it over the 80% of the 32A MCB. The customer wants to add 2 sockets and a light that would not exceed 13amps. The chap I was with said it’s not ideal but power could be put to the shed from the FCU as the RCD would cover it for fault protection. I understand this is true but if we know it won’t meet ZS of the MCB should we plan to be reliant on the fault protection on an RCD ? [/QUOTE]
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RCD for Fault Protection
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