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Multiple single phase power from 3 phase supply
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<blockquote data-quote="spinlondon" data-source="post: 179732" data-attributes="member: 3394"><p>There's no reason why what you propose cannot be done.</p><p></p><p>Your problems will be with the electricity supplier and the network distributer.</p><p></p><p>From what I understand, although you have a 3 phase supply into your workshop, you only in fact have a single phase metered supply?</p><p></p><p>You would have to arrange for the other 2 phases to be metered and before connection can be made, the distributer will very likely require an installation certificate along with appropriate inspection and testing schedules.</p><p></p><p>Do you feel you are able to provide this?</p><p></p><p>At the very least, I would imagine that a Periodic Inspection Report will be required, this will again need to be accompanied with inspection and testing schedules.</p><p></p><p>This could be provided by the qualified sparky, once you have finished the installation.</p><p></p><p>As for the actuallities of the installation, the 2 wires yellow and blue are live conductors, what we term 'Line' just the same as the red wire.</p><p></p><p>They will need neutral and earth conductors which will need to be fed from your existing neutral and earth conductors.</p><p></p><p>This is done usually by the use of Henly Blocks and an Earth Marshalling Terminal block.</p><p></p><p>The existing neutral conductor is cut, connected into a Henly Block and a feed taken to each of the three boards.</p><p></p><p>The same is done with the earth conductor, and this MET can be used not only for the feeds to the three boards, but also for any equipotential bonding conductors (you mentioned water).</p><p></p><p>There may already be a MET, but you may find you need a larger one. You can either cnange the existing one, or just connect a new one to the old using a suitably sized conductor.</p><p></p><p>It is quite important to try to evenly spread your load or current draw across the 3 phases, so you may well have to alter some of your existing circuits and spread them across the new boards.</p><p></p><p>Hope this is helpfull.</p></blockquote><p></p>
[QUOTE="spinlondon, post: 179732, member: 3394"] There's no reason why what you propose cannot be done. Your problems will be with the electricity supplier and the network distributer. From what I understand, although you have a 3 phase supply into your workshop, you only in fact have a single phase metered supply? You would have to arrange for the other 2 phases to be metered and before connection can be made, the distributer will very likely require an installation certificate along with appropriate inspection and testing schedules. Do you feel you are able to provide this? At the very least, I would imagine that a Periodic Inspection Report will be required, this will again need to be accompanied with inspection and testing schedules. This could be provided by the qualified sparky, once you have finished the installation. As for the actuallities of the installation, the 2 wires yellow and blue are live conductors, what we term 'Line' just the same as the red wire. They will need neutral and earth conductors which will need to be fed from your existing neutral and earth conductors. This is done usually by the use of Henly Blocks and an Earth Marshalling Terminal block. The existing neutral conductor is cut, connected into a Henly Block and a feed taken to each of the three boards. The same is done with the earth conductor, and this MET can be used not only for the feeds to the three boards, but also for any equipotential bonding conductors (you mentioned water). There may already be a MET, but you may find you need a larger one. You can either cnange the existing one, or just connect a new one to the old using a suitably sized conductor. It is quite important to try to evenly spread your load or current draw across the 3 phases, so you may well have to alter some of your existing circuits and spread them across the new boards. Hope this is helpfull. [/QUOTE]
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Multiple single phase power from 3 phase supply
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