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Emergency Lighting wiring set up
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<blockquote data-quote="Mr T" data-source="post: 124553" data-attributes="member: 5649"><p>Hi</p><p></p><p>Pls can you help with the following emergency lighting query</p><p></p><p>The set up consists of a key switch, a neon and a 1 way switch</p><p></p><p>t&amp;e mains ran to the supply side of the key switch and a 3 core ran to provide the Emergency Live on the load side , the N and a switched live for the 1 way switch</p><p></p><p>Links to Neon L&amp;N taken from the load side of the key so that when the key is operated the Neon goes out (simulates a mains fail)</p><p></p><p>link from L on the supply side of the key taken to Common on the switch ( so that the lights stay on and only the emergencies go off )</p><p></p><p>thats my understanding , however 2 little things that bug me which I know will be very simple once explained...</p><p></p><p>1. the link from the supply side of the key to Common on the switch - what is the purpose of this link ? Im thinking its so when you switch of the lights from the 1 way switch it also switches of the emergency is this right ? however im thinking it wouldnt switch them as the link is taken to the supply side hence leaving the bottom side ( load untouched) this is where im getting confused about the purpose of the link , I thought of it being to provide a permanent live however the supply side of the key is fed from the mains...</p><p></p><p>any help would be greatly appreciated</p><p></p><p>thanks</p></blockquote><p></p>
[QUOTE="Mr T, post: 124553, member: 5649"] Hi Pls can you help with the following emergency lighting query The set up consists of a key switch, a neon and a 1 way switch t&e mains ran to the supply side of the key switch and a 3 core ran to provide the Emergency Live on the load side , the N and a switched live for the 1 way switch Links to Neon L&N taken from the load side of the key so that when the key is operated the Neon goes out (simulates a mains fail) link from L on the supply side of the key taken to Common on the switch ( so that the lights stay on and only the emergencies go off ) thats my understanding , however 2 little things that bug me which I know will be very simple once explained... 1. the link from the supply side of the key to Common on the switch - what is the purpose of this link ? Im thinking its so when you switch of the lights from the 1 way switch it also switches of the emergency is this right ? however im thinking it wouldnt switch them as the link is taken to the supply side hence leaving the bottom side ( load untouched) this is where im getting confused about the purpose of the link , I thought of it being to provide a permanent live however the supply side of the key is fed from the mains... any help would be greatly appreciated thanks [/QUOTE]
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Emergency Lighting wiring set up
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