The ornamental design for an insulator for an electricfence, as shown and described.
FIG. 1 is a top, side, and end perspective view of an insulator for an electric fence according to the new design;
FIG. 2 is an end planar view thereof;
FIG. 3 is an opposite end planar view thereof;
FIG. 4 is a side planar view thereof;
FIG. 5 is an opposite side planar view thereof;
FIG. 6 is a top planar view thereof; and,
FIG. 7 is a bottom planar view thereof.
The broken lines immediately adjacent to the claim depict the bounds of the claimed design and form no part of the claimed design, while all other broken lines are directed to environment. The broken lines form no part of the claimed design.
The “DARE” lettering and icon forming part of the disclosure is a registered trademark of DARE Products, Incorporated, and forms no part of the claimed design.