UFC 3-560-01
6 December 2006
Including change 1, 7 December 2006
Table 4-2. Hazard/Risk Category Classifications for Work Tasks on Grade
Task (Assumes Equipment Is Energized,
Hazard/Risk
and Work Is Done Within the Flash Protection Boundary See Note 7)
Category
Panelboards Rated 240 V and Below -- Notes 1 and 3
Circuit breaker (CB) or fused switch operation with covers on
0
CB or fused switch operation with covers off
0
Work on energized parts, including voltage testing
1
Remove/install CBs or fused switches
1
Removal of bolted covers (to expose bare, energized parts)
1
Opening hinged covers (to expose bare, energized parts)
0
Panelboards or Switchboards Rated >240 V and up to 600 V (with molded case or
insulated case circuit breakers) -- Notes 1 and 3
CB or fused switch operation with covers on
0
CB or fused switch operation with covers off
1
Work on energized parts, including voltage testing
2*
600 V Class Motor Control Centers (MCCs) -- Notes 2 and 3
CB or fused switch or starter operation with enclosure doors closed
0
Reading a panel meter while operating a meter switch
0
CB or fused switch or starter operation with enclosure doors open
1
Work on energized parts, including voltage testing
2*
Work on control circuits with energized parts 120 V or below, exposed
0
Work on control circuits with energized parts >120 V, exposed
2*
4-7
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