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Do-It-Yourself (DIY) Question & Answer Forum
Discrimation...
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<blockquote data-quote="DonkeyDong" data-source="post: 15236" data-attributes="member: 156"><p>Heres one for a Friday night... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin :D" loading="lazy" data-shortname=":D" /> </p><p></p><p>How do you guys deal with discrimation of RCDs with the 17th?</p><p></p><p>Previously Type S/Time delayed were quite popular, but you dont hear a mention of them now...</p><p></p><p>So for an example you might find in a domestic, you have a garage or out building which is fed from the house CU/DB. The circuit to the garage is RCD'ed due to cable depth/type (thanks 17th Ed). This runs to the shed which has a mini CU/DB with RCD - how do you achieve discrimation ?</p><p></p><p>Do you either not fit an RCD in the shed, or fit a Type S in the house (bearing in mind you can't get Type S RCBO's for domestic boards)</p><p></p><p>D.</p></blockquote><p></p>
[QUOTE="DonkeyDong, post: 15236, member: 156"] Heres one for a Friday night... :D How do you guys deal with discrimation of RCDs with the 17th? Previously Type S/Time delayed were quite popular, but you dont hear a mention of them now... So for an example you might find in a domestic, you have a garage or out building which is fed from the house CU/DB. The circuit to the garage is RCD'ed due to cable depth/type (thanks 17th Ed). This runs to the shed which has a mini CU/DB with RCD - how do you achieve discrimation ? Do you either not fit an RCD in the shed, or fit a Type S in the house (bearing in mind you can't get Type S RCBO's for domestic boards) D. [/QUOTE]
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Discrimation...
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