Sufficient access and working space shall be provided and maintained about all electric equipment to permit ready and safe operation and maintenance of such equipment.
Distances shall be measured from the live parts if they are exposed or from the enclosure front or opening if they are enclosed.
In all cases, the workspace shall be adequate to permit at least a 90 degree opening of equipment doors or hinged panels.
Table 2340.16 . Minimum Depth of Clear Working Space at Electrical Equipment, 600 V or Less
Nominal | Minimum Clear Distance | ||||||
Voltage to | Condition 1 | Condition 2 | Condition 3 | ||||
Ground | Feet | Meters | Feet | Meters | Feet | Meters | |
0-150 | 3* | 0.9 | 3* | 0.9 | 3 | 0.9 | |
151-600 | 3* | 0.9 | 3.5 | 1.0 | 4 | 1.2 |
Notes to Table 2340.16:
Where the "Conditions" are as follows:
Condition 1--Exposed live parts on one side and no live or grounded parts on the other side of the working space, or exposed live parts on both sides effectively guarded by suitable wood or other insulating materials. Insulated wire or insulated busbars operating at 300 volts or less shall not be considered live parts.
Condition 2--Exposed live parts on one side and grounded parts on the other side. Concrete, brick, or tile surfaces shall be considered as grounded surfaces.
Condition 3--Exposed live parts on both sides of the work space (not guarded as provided in Condition (1)) with the operator between.
EXCEPTIONS:
EXCEPTION: Additional lighting fixtures are not required where the working space is illuminated by an adjacent light source. In electric equipment rooms, the illumination may not be controlled by automatic means only.
NOTE to subsection (g)(1): A dropped, suspended, or similar ceiling that does not add strength to the building structure shall not be considered a structural ceiling.
Cal. Code Regs. Tit. 8, § 2340.16
2. Amendment of Table 2340.16 and Plate 2340.16(a)(1) filed 2-1-83; effective thirtieth day thereafter (Register 83, No. 6).
3. Editorial correction filed 11-2-83 (Register 83, No. 45).
4. Editorial correction of Table 2340.16 filed 11-3-83 (Register 83, No. 45).
5. Amendment of Table 2340.16, subsections (c)-(f) and Plate 2340.16(a)(2) filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).
6. Amendment of section, repealer of Plate 2340.16(a)(2), and amendment of NOTE filed 5-5-2008; operative 5-5-2008. Submitted to OAL for printing only pursuant to Labor Code 142.3(a)(3) (Register 2008, No. 19).
7. Amendment of subsection (b)(2), repealer of subsections (b)(2)(A)-(B) and amendment of subsection (b)(3) filed 4-6-2010; operative 5-6-2010 (Register 2010, No. 15).
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
2. Amendment of Table 2340.16 and Plate 2340.16(a)(1) filed 2-1-83; effective thirtieth day thereafter (Register 83, No. 6).
3. Editorial correction filed 11-2-83 (Register 83, No. 45).
4. Editorial correction of Table 2340.16 filed 11-3-83 (Register 83, No. 45).
5. Amendment of Table 2340.16, subsections (c)-(f) and Plate 2340.16(a)(2) filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).
6. Amendment of section, repealer of Plate 2340.16(a)(2), and amendment of Note filed 5-5-2008; operative 5-5-2008. Submitted to OAL for printing only pursuant to Labor Code 142.3(a)(3) (Register 2008, No. 19).
7. Amendment of subsection (b)(2), repealer of subsections (b)(2)(A)-(B) and amendment of subsection (b)(3) filed 4-6-2010; operative 5-6-2010 (Register 2010, No. 15).