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Student & Learning Zone - City & Guilds
Am2 fault finding help!!!
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<blockquote data-quote="the doctor" data-source="post: 93667" data-attributes="member: 75"><p>hi,</p><p></p><p>not an expert on AM2 by any means but there only 3 faults that can exist</p><p></p><p>open circuit</p><p></p><p>short circuit</p><p></p><p>crossed wiring</p><p></p><p>so lets say a typical "job card" reads "report of fluorescent light not working"</p><p></p><p>1 isolate the big board</p><p></p><p>2 take lid off flu</p><p></p><p>3 set ohm meter to ohms or "bell"</p><p></p><p>4 stab in on the lighting breaker and L terminal to get reading/bell</p><p></p><p>5 if no bell, switch the switches till you get bell- if you do line is proven</p><p></p><p>6 stab on neutral in board and N at light- no reading/ bell - open neutral</p><p></p><p>the two faults you find in real life are either open or shorts......</p><p></p><p>the only one that could catch anyone out is the crossed wiring as it would be rarely found. here a brown leaving the mains ends up as a blue at its destination and vice-versa</p><p></p><p>does this help you out?</p><p></p><p>best wishes</p><p></p><p>alan</p></blockquote><p></p>
[QUOTE="the doctor, post: 93667, member: 75"] hi, not an expert on AM2 by any means but there only 3 faults that can exist open circuit short circuit crossed wiring so lets say a typical "job card" reads "report of fluorescent light not working" 1 isolate the big board 2 take lid off flu 3 set ohm meter to ohms or "bell" 4 stab in on the lighting breaker and L terminal to get reading/bell 5 if no bell, switch the switches till you get bell- if you do line is proven 6 stab on neutral in board and N at light- no reading/ bell - open neutral the two faults you find in real life are either open or shorts...... the only one that could catch anyone out is the crossed wiring as it would be rarely found. here a brown leaving the mains ends up as a blue at its destination and vice-versa does this help you out? best wishes alan [/QUOTE]
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Am2 fault finding help!!!
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