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Minimum spacing for bare conductors shall be in accordance with Table 2756, although greater spacing may be required by unusual atmospheric or other special conditions.
Table 2756 Minimum Spacing in Inches Between Bare Energized Parts and Adjacent Surfaces Voltage Outdoor Indoor Phase Phase Phase Phase Phase to to to to to Phase Ground Phase Ground Phase 601 3-1/2 5 3/4 3/4 750 3-1/2 5 3/4 3/4 1200 3-1/2 5 1 1/4 1 1/4 2500 3-1/2 5 2 2 1/2 5000 6 7 2 1/2 4 7500 6 7 4 5 15000 7 12 6 7 23000 10 15 10 15 35000 13 18 13 18 Above 35 KV.37/KV .455 /KV36 /KV .455 /KV
NOTES:
(1) Spacings shown are minimum for energized parts to energized parts or energized parts to ground for elevations up to 3,300 feet above sea level. From 3,301 to 10,000 feet elevations, increase spacings by 10 percent, and above 10,000 feet elevation, increase spacings by 20 percent. For voltages above 230 KV, spacings shall be as required for the BIL of the system.
(2) For intermediate values of system voltage, use next higher voltage in table.
(Title 24, Part 3, Section 3-710-33.)
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.
HISTORY
1. Editorial correction filed 11-2-83 (Register 83, No. 45).
2. Amendment filed 1210-87; operative 1-9-88 (Register 88, No. 1).
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