UL 66:2002 pdf download – Fixture Wire
UL 66:2002 pdf download – Fixture Wire.
11 Continuity Test of Conductor
111 The finished wire shall be tested for continuity of the conductor. The continuity test is to be conducted concurrent with or preceding the Spark Test. Sechon 13. The continuity test is to be conducted as described in 900.13— 900.17 of UL 1581 on 100 percent of production by the wire manufacturer at the wire factory.
11.2 The finished wire is to be tested on each master reel before the final rewind operation, or each individual shipping length is to be tested after the final rewind operation. A master reel Is any reel containing a single length of finished wire that is intended to be Cut into shorter lengths for shipping.
12 D-C Resistance Test of Conductor
12.1 Where measured as the means of size verification (see 6.4.1), the direct-current resistance of any length of conductor in ohms based on 1000 conductor feet or in ohms based on 1000 conductor meters shall not be higher than the following maximum value for the marked size of the solid or stranded construction:
a) SOLID OR STRANDED COPPER CONDUCTORS THAT ARE UNCOATED OR ARE
COATED WITH TIN OR A TIN/LEAD ALLOY — See the maximum value in Table 12,1, 12.2,
12.3, or 12.4 as applicable.
b) SOLID OR STRANDED COPPER CONDUCTORS THAT ARE COATED WITH SILVER OR NICKEL FOR USE AS STATED IN 6.12- Calculate the maximum value as described in 12.2
c) CONDUCTORS OF ThE NICKEL-BASE ALLOY STATED IN 6.1.2 — Calculate the
maximum value as described in 12.2.
See 12.3 regarding measurements at other temperatures. All resistance measurements are to be conducted as described in D.C Conductor Resistance. Section 220 of UL 1581.
12.2 For the silver-coated, nickel-coated, and nickel-base-alloy conductors referenced in 12.1 (b) and (c), the maximum resistance for the marked size of the solid or stranded construction is to be determined by multiplying the maximum resistance for uncoated copper of the same size and construction by the ratio of 100 percent IACS (International Annealed Copper Standard) to the percent conductivity of the conductor under consideration. For example, to determine the maximum resistance R at 25C (77°F) of a solid 18 AWG conductor with a nickel coating of a thickness equal to 10 percent of the diameter over the conductor, note that Table 12.4 assigns a value of 6.66 ohms per 1000 conductor feet or 21.84 ohms per 100 conductor meters to the uncoated solid copper conductor and that ASTM B 355-95 assigns a conductivity of 88.0 percent to the Class 10 nickel-coated conductor:
13.2 The conductor of the wire shall be earth-grounded during the spark test. Where the conductor coming from the pay-ott reel is bare, the conductor shall be earth-grounded at the pay-oft reel or at another point at which continuous contact with the bare conductoi-. prior to the insulating process, is maintained, In which case, testing for continuity or earth-grounding at the take-up reel Is not required. Where the conductor coming from the pay-off reel is insulated, an earth-ground connection shall be made at both the pay-off and take-up reels except that, for wire that is tested for continuity with the conductor found to be of one integral length. the earth-ground connection is required to be made at only one point
— at either the take-up or pay-ott reel. In any case. each earth-ground connection shall be bonded directly to the earth ground in the spark tester.
14 Deformation Test
14.1 The FEP, PVC, and XLPO insulations on finished Type PF, PFF, PGF, PGFF, TFN, TFFN, TF, TFF,
XF, arid XFF wires shall be capable of decreasing no more in thickness than the percentage specified in
Table 14.1 when specimens as described in 14.2 are subjected to the temperature and load specified in
Table 14.1. The test Is to be conducted and the measurements and calculations are to be made as
described under Deformation Test, Section 560 of UL 1581, and in 14.2 and 14.3.
14.2 The specimens in each case are to be 1-inch or 25-mm lengths of the finished wire having a solid
conductor. Specimens with stranded conductors are not to be tested. Dl and d are to be measured and
Tt is to be calculated as described in 560.1 of UL 1581. The nylon is to be in place on Types TEN and
TFFN and all measurements are to be made over the nylon
14.3 An entire diameter of the foot end of the test rod is to be in contact with each specimen during the second hour of heating.