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Old 02-26-2011, 07:38 PM   #1
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wirinig new light fixture to old wire


putting in new fixture that has to be earthed not sure where or if i can use

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Old 02-26-2011, 08:48 PM   #2
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"not sure if or where I can use"......what?
We'll need you to finish the question before anyone can properly answer!

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Old 02-26-2011, 08:57 PM   #3
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Most new light fixtures that need to be earthed will still work if they are not earthed for want of an earthing conductor in the feed cable.
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Old 02-26-2011, 09:01 PM   #4
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old to new light fixture


old wiring has no earth wire new has a earth screw can i use the earth that run to the power points or not
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Old 02-26-2011, 09:12 PM   #5
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Do not connect the earth screw to either of the power terminals or power wires (black/white); do not use a short jumper wire there.
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Last edited by AllanJ; 02-26-2011 at 09:15 PM.
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Old 02-26-2011, 09:17 PM   #6
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from the new light fixture where or what can i earth it to
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Old 02-26-2011, 09:52 PM   #7
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Choice of:

1. Rewire the circuit so the cable or conduit coming to the light fixture has an earthing wire.
2. Run a #12 or #14 (matching the power conductors) bare wire from the earthing terminal down to the breaker panel where the power feed for the circuit is fed. This separate earthing wire may more or less follow, may vaguely follow, or may exactly follow the route of the circuit cable. Should the earthing wire first reach the fat earthing wire (grounding electrode conductor) between the main panel and the main cold water pipe entering the building, you may clamp it on there.
3. Do nothing; leave the fixture unearthed.

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