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Canada–Newfoundland and Labrador Offshore Area Occupational Health and Safety Regulations (SOR/2021-247)

Regulations are current to 2022-11-16 and last amended on 2022-01-01. Previous Versions

SCHEDULE 1(Section 141)

Approach Boundaries for Alternating Current Systems (distance from energized electrical conductor or circuit part to person)

ItemColumn 1Column 2Column 3Column 4
Limited Approach Boundary
Nominal System Voltage Range, Phase to PhaseFootnote for Approach Boundaries for Alternating Current Systems (distance from energized electrical conductor or circuit part to person)aExposed Energized Electrical ConductorExposed Energized Circuit PartRestricted Approach Boundary
1Less than 30 VNot applicableNot applicableNot applicable
231 V – 150 V3.0 m1.0 m> 0 m
3151 V – 750 V3.0 m1.0 m0.3 m
4751 V – 15 kV3.0 m1.5 m0.7 m
515.1 kV – 36 kV3.0 m1.8 m0.8 m
636.1 kV – 46 kV3.0 m2.5 m0.8 m
746.1 kV – 72.5 kV3.0 m2.5 m1.0 m
872.6 kV – 121 kV3.3 m2.5 m1.0 m
9138 kV – 145 kV3.4 m3.0 m1.2 m
10161 kV – 169 kV3.6 m3.6 m1.3 m
11230 kV – 242 kV4.0 m4.0 m1.7 m
12345 kV – 362 kV4.7 m4.7 m2.8 m
13500 kV – 550 kV5.8 m5.8 m3.6 m
14765 kV – 800 kV7.2 m7.2 m4.9 m
  • Return to footnote aFor single-phase systems above 250 V, select the range that is equal to the system’s maximum phase-to-ground voltage times 1.732.

 
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