Photovoltaic module with a cross rail assembly

A grounding coupler comprising:

• a first electrically conductive arm with a length and a width;
• and
• a second electrically conductive arm with a length, the second arm electrically and mechanically coupled to the first arm at a joining portion, the length of the first arm being greater than the length of the second arm,
• wherein the first arm has an outer planar wall section with an exposed surface area and an inner planar wall section with an exposed surface area, the first arm extending from the joining portion,
• wherein the second arm has an outer planar wall section with an exposed surface and an inner planar wall section with an exposed surface, the second arm extending from the joining portion,
• wherein a distal end of the first arm comprises a distal tip bordering on a hollow positioned at the distal end of the first arm, the hollow comprising an elongated channel oriented along the width of the first arm, the channel having an open side along its length, the open side oriented along the width of the first arm, the open side defined by the absence of a sidewall of the elongated channel, and
• wherein the first arm further comprises a friction fin, the fin leaning towards the joining portion.

A grounding coupler comprising:

• a first electrically conductive arm with a length and a width;
• and
• a second electrically conductive arm with a length and a width, the second arm electrically and mechanically coupled to the first arm at a joining portion, the length of the first arm being greater than the length of the second arm,
• wherein the first arm has an outer planar wall section with an exposed surface area and an inner planar wall section with an exposed surface area, the first arm extending from the joining portion,
• wherein the second arm has an outer planar wall section with an exposed surface and an inner planar wall section with an exposed surface, the second arm extending from the joining portion, the inner planar wall section with an exposed surface of the second arm not being parallel to the outer planar wall section with an exposed surface of the second arm, the inner planar wall section with an exposed surface of the second arm meeting the outer planar wall section with an exposed surface along a furthest outermost distal end of the second arm, the distal end of the second arm extending along the width of the second arm,
• wherein the outer planar wall section of the first arm extends along a majority of the length of the first arm, and
• wherein the first arm further comprises a friction fin, the fin leaning towards the joining portion.