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Do-It-Yourself (DIY) Question & Answer Forum
Emergency Lighting wiring set up
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<blockquote data-quote="spinlondon" data-source="post: 124586" data-attributes="member: 3394"><p>Not certain why you have the extra one way switch.</p><p></p><p>There are two ways these key switches are normally wired.</p><p></p><p>One so that all power is cut, simulating a power failure.</p><p></p><p>This would leave only the emergency lights lit, and you would be able to check light levels and determine whether any lamps or batteries have failed.</p><p></p><p>The other is where just the permenant live to the emergency lights is cut.</p><p></p><p>This will switch on the emergency lights, whilst leaving the normal lights on.</p><p></p><p>This makes it difficult to ascertain whether light levels are adequate, and whether lamps or batteries have failed.</p><p></p><p>The only thing I can suggest, is that you operate the one way switch.</p><p></p><p>Then the key switch followed by the one way switch, and note what happens.</p></blockquote><p></p>
[QUOTE="spinlondon, post: 124586, member: 3394"] Not certain why you have the extra one way switch. There are two ways these key switches are normally wired. One so that all power is cut, simulating a power failure. This would leave only the emergency lights lit, and you would be able to check light levels and determine whether any lamps or batteries have failed. The other is where just the permenant live to the emergency lights is cut. This will switch on the emergency lights, whilst leaving the normal lights on. This makes it difficult to ascertain whether light levels are adequate, and whether lamps or batteries have failed. The only thing I can suggest, is that you operate the one way switch. Then the key switch followed by the one way switch, and note what happens. [/QUOTE]
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Emergency Lighting wiring set up
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