FIG. 1 is a perspective view of an electrical receptacle assembly for adjustable tracklight showing my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view showing the electrical receptacle assembly for adjustable tracklight, a tracklight shown in dotted lines, for illustrative purposes only and form no part of the claimed design.