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Values In Table 7.1 Of Osg
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<blockquote data-quote="Sam Donaghy" data-source="post: 340826" data-attributes="member: 23465"><p>Where do the values in Table 7.1 of the OSG come from?</p><p></p><p>If I look at a 6A Type B Circuit Breaker with 1.5/1.0 mm2 cable, Table 7.1 (p57) gives a max circuit length of 90 metres.</p><p></p><p>But using Table F6 gives a Volt Drop of 29 mV/A/m for 1.5mm2 cable so 90 metres at 6A would give a volt drop of (29x6x90/1000) = 15.66V. This is way above 3% which is 6.9V. In fact about 27 metres would give a volt drop of 3.88V.</p><p></p><p>Where do the values in Table 7.1 come from?</p><p></p><p>What am I missing?</p><p></p><p>Sam</p></blockquote><p></p>
[QUOTE="Sam Donaghy, post: 340826, member: 23465"] Where do the values in Table 7.1 of the OSG come from? If I look at a 6A Type B Circuit Breaker with 1.5/1.0 mm2 cable, Table 7.1 (p57) gives a max circuit length of 90 metres. But using Table F6 gives a Volt Drop of 29 mV/A/m for 1.5mm2 cable so 90 metres at 6A would give a volt drop of (29x6x90/1000) = 15.66V. This is way above 3% which is 6.9V. In fact about 27 metres would give a volt drop of 3.88V. Where do the values in Table 7.1 come from? What am I missing? Sam [/QUOTE]
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Values In Table 7.1 Of Osg
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