4" SQ EXP WORK COVER 30-50A 2.
4" SQ EXP WORK COVER 30-50A 2.
G1944
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๐ What it is
A 4-inch square raised exposed work cover designed specifically to mount high-amperage receptacles (30Aโ50A) onto a 4โ square electrical box in surface-mounted (conduit) installations.
๐งพ What the shorthand means
- 4" SQ โ Fits standard 4-inch square electrical box
- EXP WORK โ Exposed work (surface-mounted conduit, not inside wall)
- COVER โ Device mounting plate
- 30โ50A โ Rated opening for high-amperage receptacles (range, dryer, EV, welder, etc.)
- 2 โ Typically indicates device opening count or configuration variant (often 2-device capable family series depending on manufacturer catalog)
These covers are commonly used for NEMA 6-30, 6-50, 14-30, 14-50, and similar receptacles.
โก What it does
This cover:
- Provides a mounting surface for heavy-duty receptacles
- Attaches to a 4โ square steel box
- Supports high-amperage outlets (30Aโ50A circuits)
- Used in surface conduit installations (industrial/commercial/garage EV setups)
- Maintains safe enclosure and alignment for receptacle installation
Industry listings describe these as industrial surface covers for 30โ50 amp receptacle mounting on 4-square boxes.
๐ Typical uses
- Electric range outlets (50A)
- Dryer outlets (30A)
- EV charger receptacles (often 14-50)
- Welders and shop equipment
- Industrial machinery disconnect points
- Garage and workshop surface-mounted power
๐ง Simple explanation
This is a metal plate that lets you mount a 30โ50 amp heavy-duty outlet onto a surface-mounted 4-inch square box, usually in garages or industrial conduit setups.

4" SQ EXP WORK COVER 30-50A 2.
$3.11