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UL 857:13ED 2009-03-25
Current
The latest, up-to-date edition.
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Busways
Hardcopy
English
25-03-2009
FOREWORD
INTRODUCTION
1. Scope
2. General
CONSTRUCTION
ALL PRODUCTS
3. General
4. Enclosure
5. Grounding
6. Busway Supports
7. Transverse Barriers
8. Bus Bar Supports
9. Current-Carrying Parts
10. Bus Bar Coverings
11. Wiring Terminals
12. Spacings
13. Wiring Space
VENTILATED BUSWAY
14. Enclosure
15. Bus Bar Coverings
16. Spacings
UNVENTILATED BUSWAY
17. Enclosure
TROLLEY BUSWAY
18. General
19. Enclosure
PLUG-IN BUSWAY AND FITTINGS
20. General
21. Enclosure
OUTDOOR BUSWAY AND FITTINGS
22. General
23. Enclosure
FITTINGS
24. General
25. Fittings Suitable for Use as Service Equipment
26. Enclosure
27. Live Parts
28. Spacings
SHORT-RUN BUSWAY
29. General
30. Enclosure
31. Busway Supports
32. Bus Bar Supports
33. Current Carrying Parts
34. Spacings
35. Ratings
36. Markings
PERFORMANCE
37. Heating Test
38. Endurance Test of Trolley Busway
39. Electrical Conductivity Test
40. Enclosure Joint Short-Time Fault Current Test
41. Overload and Endurance Tests
42. Resistance to Aging Test
43. Dielectric Voltage-Withstand Tests
44. Resistance to Impact Test
45. Resistance to Bending Test
46. Resistance to Crushing Test
47. Bus-Bar Pullout Test
48. Strain Relief Test
49. Metallic Coating Thickness Test
50. Insulation Resistance And Dielectric Voltage-Withstand
after Exposure to Rain Tests
51. Short Circuit Test
52. Short Circuit Test at Reduced Voltage
53. Strength of Insulating Base and Support Test
RATINGS
54. General
MARKINGS
55. General
56. Permanence of Marking
INSTALLATION INSTRUCTIONS
57. Field Testing of Ground Fault Protection of Equipment
APPENDIX A
Standards for Components
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