The hermetic terminal according to the present disclosure includes a conductor having a pillar shape, a metal ring coaxially positioned with the conductor, an insulating ring coaxially positioned with the conductor, a flange that is disposed on the insulating ring and that divides the conductor into two regions, a first fixing member configured to fix the insulating ring to the conductor, and a second fixing member configured to fix the insulating ring to the flange. The metal ring, the first fixing member, and the second fixing member are formed of an Fe-Co based alloy, an Fe-Co-C based alloy, an Fe-Ni based alloy, or an Fe-Ni-Co based alloy. The metal ring and the first fixing member are connected to each other, and the insulating ring is fixed to the conductor at a distance from the metal ring.

A connector includes: a number of busbars; a housing holding of the busbars; and a cover mounted on the housing. The busbars each have a fastening target portion to connect a terminal metal fitting by using a bolt. The fastening target portion is housed in a housing room, and a number of the housing rooms is defined between the housing and the cover. One of the housing rooms corresponding to the fastening target portion of one of the busbars and another of the housing rooms corresponding to the fastening target portion of another of the busbars are separated with a partition wall, and at least part of the partition wall has a liquid-tight portion formed by engaging a projection of one of the housing and the cover with a recess of the other of the housing and the cover.

A connector includes: a number of busbars; a housing holding of the busbars; and a cover mounted on the housing. The busbars each have a fastening target portion to connect a terminal metal fitting by using a bolt. The fastening target portion is housed in a housing room, and a number of the housing rooms is defined between the housing and the cover. One of the housing rooms corresponding to the fastening target portion of one of the busbars and another of the housing rooms corresponding to the fastening target portion of another of the busbars are separated with a partition wall, and at least part of the partition wall has a liquid-tight portion formed by engaging a projection of one of the housing and the cover with a recess of the other of the housing and the cover.

Provided is a terminal block that electrically connects a terminal connection portion provided at a terminal end of a covered wire and a device-side connection portion provided in a device to each other, the terminal block including: a contact placement portion on which the terminal connection portion and the device-side connection portion are disposed in contact with each other; a wire installation portion that is provided continuously with the contact placement portion and on which the covered wire is disposed; and a stress relaxation portion that is disposed between the wire installation portion and the covered wire so as to be elastically displaceable, and that bends and holds the covered wire in a state in which a clearance is provided between the covered wire and the wire installation portion.

Provided is a terminal block that electrically connects a terminal connection portion provided at a terminal end of a covered wire and a device-side connection portion provided in a device to each other, the terminal block including: a contact placement portion on which the terminal connection portion and the device-side connection portion are disposed in contact with each other; a wire installation portion that is provided continuously with the contact placement portion and on which the covered wire is disposed; and a stress relaxation portion that is disposed between the wire installation portion and the covered wire so as to be elastically displaceable, and that bends and holds the covered wire in a state in which a clearance is provided between the covered wire and the wire installation portion.

A terminal block and terminal assembly where the terminal block has a base and at least one terminal receiving area. The at least one terminal receiving area includes a floor and a pair of opposing sidewalls extending substantially perpendicular to the floor to define a channel. At least one tab projects from one of the pair of opposing walls and extends toward the other wall. The terminal has a base with a wire connector portion at one end and a locking mechanism at the other end. The locking mechanism has a portion to receive the at least one tab so that the tab is sandwiched by the locking mechanism to lock the terminal against tipping in the terminal receiving area.

A terminal block includes a pedestal and a terminal attached to the pedestal. A fastening portion of a connection terminal is overlapped on a fixing face of the terminal and is fastened to a fastening position on the fixing face. The connection terminal is brought close to and disposed at the fastening position of the terminal from a side. The pedestal has a guide face that guides the fastening portion of the connection terminal that approaches from a side upward from the fixing face toward the fastening position. The fastening portion passes beyond an edge portion of the guide face and arrives at the fastening position so as to be overlapped on the fixing face.

A terminal block includes a pedestal and a terminal attached to the pedestal. A fastening portion of a connection terminal is overlapped on a fixing face of the terminal and is fastened to a fastening position on the fixing face. The connection terminal is brought close to and disposed at the fastening position of the terminal from a side. The pedestal has a guide face that guides the fastening portion of the connection terminal that approaches from a side upward from the fixing face toward the fastening position. The fastening portion passes beyond an edge portion of the guide face and arrives at the fastening position so as to be overlapped on the fixing face.

In various representative aspects, an apparatus for clamping and grounding solar panel frames to a mounting rail is disclosed herein. The apparatus includes a fastener with an enlarged end, and a shank, with the enlarged end having one or more sharp protrusions that resemble teeth, and a washer with one or more sharp protrusions, and an opening. When installed, the shank is inserted through the opening of the washer, the sharp protrusions of the enlarged end penetrate either the lower or upper surface of the mounting rail and the sharp protrusions of the washer penetrate the other surface of the solar panel frames while at the same time creating a grounding path through the apparatus.

In various representative aspects, an apparatus for clamping and grounding solar panel frames to a mounting rail is disclosed herein. The apparatus includes a fastener with an enlarged end, and a shank, with the enlarged end having one or more sharp protrusions that resemble teeth, and a washer with one or more sharp protrusions, and an opening. When installed, the shank is inserted through the opening of the washer, the sharp protrusions of the enlarged end penetrate either the lower or upper surface of the mounting rail and the sharp protrusions of the washer penetrate the other surface of the solar panel frames while at the same time creating a grounding path through the apparatus.