The ornamental design for an electricalsocketboot, as shown and described.
FIG. 1 is a rear perspective view of an electrical socket boot showing my new design;
FIG. 2 is a front perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left elevational view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a front elevational view thereof; and,
FIG. 8 is a right elevational view thereof.
The cross-hatching areas in the figure drawings represent the knurled portions of the electrical socket boot. The even-broken line in the figure drawings is included for the purpose of illustrating environment and forms no part of the claimed design.