Wire temperature rating


Old 11-05-05, 10:18 AM
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Wire temperature rating

I recently purchaced some new ceiling fixtures that have flourscent bulbs. I see on the fixture that they require wiring that has a temperature rating of 90c and homes built before 1985 may not have proper wiring. Can I determine from the printing on the cable if it is the kind of wire needed for these fixtures?
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Old 11-05-05, 10:41 AM
Join Date: Apr 2004
Location: Ontario Canada
Posts: 1,767
Usually yes. Modern cable and conductors have the temp. rating printed on.
Old 11-05-05, 12:31 PM
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Join Date: Sep 2003
Location: New Hampshire
Posts: 174
If it's non-metallic cable (romex) you are looking for "NM-B." The "B" means it's 90-degree C wire.

Old 11-05-05, 02:18 PM
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Thanks guys! I've got both NM and NMB cables. I spoke to and electrician that I know and also got some advice from him. He told me to keep the existing wires away from the ballast and there will be no problems even with NM cable.

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