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Student & Learning Zone - City & Guilds
C&G 2330 Level 2 - 204 Practical Exam (fluorescent & 3 phase)
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<blockquote data-quote="ebow72" data-source="post: 196802" data-attributes="member: 13771"><p>Couldn't take any photo's but here's what I did...</p><p></p><p>3 phase - you need to check the voltage between each phase (L1+L2, L2+L3, L3+L1), then between each phase and neutral. We had 3 100w bulbs connected to 3 separate sockets on each phase, using a clip on ammeter you check the current through each phase and check the neutral. Make a note of your readings as you test. The written bit asks what would cause return current to flow down the neutral. You have to write a short bit on this.</p><p></p><p>Fluorescent - take readings at circuit with the capacitor in / out, at the choke, at the light and supply. take readings for volts and amps.</p><p></p><p>The written bit asks why the voltage at the choke and the the light don't add up to the supply voltage, all to do with power factor and phasor diagrams. Also you have to explain what a capacitor does in this circuit.</p><p></p><p>There are 2 other written bits are to do with 'Safe Isolation Procedure' and 'Tools and PPE' you have to imagine you are about to repair a light at the public place IE shopping center, gym and so on...List what items of PPE you would need and what tools, don't forget barriers, signs, locking off equipment..</p><p></p><p>I recommended you do a bit of planning on what PPE you would use, as the list is endless, if you show you have planned it goes in your favor. Also if you can slightly expand on the 'Safe Isolation Procedure', again it show's you have done some revision and not turned up like some and have no idea..</p><p></p><p><span style="font-size: 8px"><span style="color: #C0C0C0">---------- Post Auto-Merged at 10:46 ---------- Previous post was made at 10:45 ----------</span></span></p><p></p><p>I have my 'Bay in a Day' 206 on Monday and Tuesday..I will take some pictures and post them with as much info as I can..</p></blockquote><p></p>
[QUOTE="ebow72, post: 196802, member: 13771"] Couldn't take any photo's but here's what I did... 3 phase - you need to check the voltage between each phase (L1+L2, L2+L3, L3+L1), then between each phase and neutral. We had 3 100w bulbs connected to 3 separate sockets on each phase, using a clip on ammeter you check the current through each phase and check the neutral. Make a note of your readings as you test. The written bit asks what would cause return current to flow down the neutral. You have to write a short bit on this. Fluorescent - take readings at circuit with the capacitor in / out, at the choke, at the light and supply. take readings for volts and amps. The written bit asks why the voltage at the choke and the the light don't add up to the supply voltage, all to do with power factor and phasor diagrams. Also you have to explain what a capacitor does in this circuit. There are 2 other written bits are to do with 'Safe Isolation Procedure' and 'Tools and PPE' you have to imagine you are about to repair a light at the public place IE shopping center, gym and so on...List what items of PPE you would need and what tools, don't forget barriers, signs, locking off equipment.. I recommended you do a bit of planning on what PPE you would use, as the list is endless, if you show you have planned it goes in your favor. Also if you can slightly expand on the 'Safe Isolation Procedure', again it show's you have done some revision and not turned up like some and have no idea.. [SIZE=8px][COLOR=#C0C0C0]---------- Post Auto-Merged at 10:46 ---------- Previous post was made at 10:45 ----------[/COLOR][/SIZE] I have my 'Bay in a Day' 206 on Monday and Tuesday..I will take some pictures and post them with as much info as I can.. [/QUOTE]
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C&G 2330 Level 2 - 204 Practical Exam (fluorescent & 3 phase)
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