I am getting ready to put in new lighting in my utility room and kitchen. On the new lights it says houses wired before 1985 were usually wired with 60 celsius wiring and this lighting requires 90 celsius. I have done some wiring but can not remember if it says the celsius on the insulation or not and do not know how to find out if it is not marked on the insulation.
2006-09-01 03:52:18 · 3 answers · asked by Anonymous in Home & Garden ➔ Do It Yourself (DIY)
All wires are required to be marked. You may not have enough length at certain points to see it, but all wires are marked. With Romex (I assume that is what you have), the conductors on the inside are not marked, but the sheath is. If it is type NM you have 60 degree wire and if type NM-B you have 90 degree wire. Single conductors have a type such as THHN that will indicate the temperature if you can translate. The simplest is to look up in the code. THHN is 90, THWN is 75, TW is 60, RHH is 90, RHW is 75, etc!!!
2006-09-01 04:52:47 · answer #1 · answered by An electrical engineer 5 · 0⤊ 0⤋
The tempurature rating is based on the type of insulation, temp rating and insulation are marked on the insulation jaclet. Ex. 12AWG ( conductor size ) THWN ( insulation type and rating ) 90 DEG. C. If the wire is unmarked you can get UGLY'S Electrical Reference book from a local supply house, it will explain how to find the ratig if not marked. If you are using Romex it will be marked.
Ed 33 years electrician
2006-09-01 11:26:59 · answer #2 · answered by Ed W 2 · 0⤊ 0⤋
No, its not marked on the insulation. Your safest bet would be to terminate the wiring away from the light source and run cable that you know is the correct heat rating.
If you are in the UK, you need to adhere to Part P regulations now.
2006-09-01 10:55:50 · answer #3 · answered by Michael H 7 · 0⤊ 0⤋