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Student & Learning Zone - City & Guilds
2391 question, SPD"s
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 250534" data-attributes="member: 250"><p>1/ Look again at the question.....</p><p></p><p>2/ Look again at guidance note 3 pages 37 thro 40 of guidance which clearly describes test methods and table 2.2. on page 38 which describes the voltages...</p><p></p><p>3/ Now look at the little blue number in the margin of GN3 it says Table 61...</p><p></p><p>4/ Go and check table 61 on page 191 of BS7671...</p><p></p><p>5/ The paragraph under table 61 starts with the wording..</p><p></p><p>"Where surge protective devices (SPDs) ..... blah... blah... blah.."</p><p></p><p>Read the rest of that paragraph...</p><p></p><p>Learn it..</p><p></p><p>Write it down as your answer...</p><p></p><p>Its all there in the books recommended for use in the 2191 IMHO!</p><p></p><p> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> </p><p></p><p>They are trying to get you to learn to navigate all of the relevant publications..</p><p></p><p>there are enough clues in the question to find the clearly defined answers..</p><p></p><p>i.e</p><p></p><p>test voltage.. between where... expected min valule..</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 250534, member: 250"] 1/ Look again at the question..... 2/ Look again at guidance note 3 pages 37 thro 40 of guidance which clearly describes test methods and table 2.2. on page 38 which describes the voltages... 3/ Now look at the little blue number in the margin of GN3 it says Table 61... 4/ Go and check table 61 on page 191 of BS7671... 5/ The paragraph under table 61 starts with the wording.. "Where surge protective devices (SPDs) ..... blah... blah... blah.." Read the rest of that paragraph... Learn it.. Write it down as your answer... Its all there in the books recommended for use in the 2191 IMHO! ;) They are trying to get you to learn to navigate all of the relevant publications.. there are enough clues in the question to find the clearly defined answers.. i.e test voltage.. between where... expected min valule.. [/QUOTE]
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2391 question, SPD"s
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