Arc Flash Parameters: switchgear
IEEE 1584-2018 arc flash calculation parameters by equipment class and voltage class. Includes electrode gap (mm), working distance (inches), enclosure dimensions, and electrode configuration for switchgear, MCC, panelboard, and cable junction equipment.
| equipment class | voltage class | electrode config | enclosure depth mm (mm) | enclosure height mm (mm) | enclosure width mm (mm) | gap mm (mm) | insulation level pct (%) | notes | working distance in (in) | working distance mm (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| switchgear | 15KV | VCB | 762 | 1,143 | 762 | 152 | 100 | 15kV metal-clad switchgear; IEEE 1584-2018 Table 8 equipment class | 36 | 914 |
| switchgear | 208V | VCB | 508 | 508 | 508 | 25 | 100 | Low-voltage switchgear at 208V; same enclosure class as 480V LV | 24 | 610 |
| switchgear | 208V_DEEP | VCB | 610 | 508 | 508 | 25 | 100 | Low-voltage switchgear 208V deep-enclosure variant (depth > 203.2mm); gap and WD same as 208V LVSG; depth correction per IEEE 1584-2018 §4.5 | 24 | 610 |
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