The ornamental design for an electrical housing, as shown and described.
FIG. 1 is a top right front perspective view of the electrical housing showing our new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a rear elevational view thereof, the front elevational view being the mirror image thereof;
FIG. 4 is a left side elevational view thereof, the right side elevational view being the mirror image thereof;
FIG. 5 is a front elevational view thereof; and,
FIG. 6 is a top plan view thereof.
The broken lines in the drawings illustrate portions of an electrical housing which form no part of the claimed design.