A power meter for monitoring one or more phases of power that is delivered to a load, comprising: a power meter housing having a front side with a display and a back side opposite the front side; a terminal block movable relative to the power meter housing and releasably securable into two different orientations including: a first orientation where two or more terminals of the terminal block face in a first direction towards the front side of the power meter , in a manner that enables wiring access to the front side of the power meter ; and a second orientation where the two or more terminals of the terminal block face in a second direction towards the back side of the power meter , in a manner that enables wiring access to the back of the power meter , wherein the two or more terminals of the terminal block are exposed to outside of the power meter housing in both the first orientation and the second orientation; and whereby the power meter further comprises: a controller operatively coupled to the two or more terminals of the terminal block in the first orientation and in the second orientation, the controller configured to determine a number of power monitor parameters for one or more phases of power that is delivered to a load based at least in part on signals at the two or more terminals of the terminal block. a power meter housing having a front side with a display and a back side opposite the front side; a terminal block movable relative to the power meter housing and releasably securable into two different orientations including: a first orientation where two or more terminals of the terminal block face in a first direction towards the front side of the power meter , in a manner that enables wiring access to the front side of the power meter ; and a second orientation where the two or more terminals of the terminal block face in a second direction towards the back side of the power meter , in a manner that enables wiring access to the back of the power meter , wherein the two or more terminals of the terminal block are exposed to outside of the power meter housing in both the first orientation and the second orientation; and whereby the power meter further comprises: a controller operatively coupled to the two or more terminals of the terminal block in the first orientation and in the second orientation, the controller configured to determine a number of power monitor parameters for one or more phases of power that is delivered to a load based at least in part on signals at the two or more terminals of the terminal block. a first orientation where two or more terminals of the terminal block face in a first direction towards the front side of the power meter , in a manner that enables wiring access to the front side of the power meter ; and a second orientation where the two or more terminals of the terminal block face in a second direction towards the back side of the power meter , in a manner that enables wiring access to the back of the power meter , wherein the two or more terminals of the terminal block are exposed to outside of the power meter housing in both the first orientation and the second orientation; and whereby the power meter further comprises: a controller operatively coupled to the two or more terminals of the terminal block in the first orientation and in the second orientation, the controller configured to determine a number of power monitor parameters for one or more phases of power that is delivered to a load based at least in part on signals at the two or more terminals of the terminal block. <EOS>