1. (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. (2) For intermediate values of system voltage, use next higher voltage in table.

   (Title 24, Part 3, Section 3-710-33.)

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 to Phase

Phase to Ground

Phase to Phase

Phase to Ground

Phase to Phase

601

3 ½

5

¾

¾

750

3 ½

5

¾

¾

1200

3 ½

5

1 ¼

1 ¼

2500

3 ½

5

2

2 ½

5000

6

7

2 ½

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/KV

36 /KV

.455 /KV

NOTES:

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).