A direct current motor comprising: a power connector comprising: a plurality of alternating current voltage source input terminals for connection to an AC voltage source comprising a first AC source and a second AC source coupled in series and including a ground node therebetween, at least one of said plurality of AC voltage source input terminals configured for electrical connection to the ground node of the AC voltage source; and a plurality of DC voltage source input terminals for connection to a DC voltage source, the DC voltage source comprising a first DC source and a second DC source coupled in series and including a common node therebetween, at least one of said plurality of DC voltage source input terminals configured to electrically couple the common node to the ground of the DC voltage source to the ground node of the AC voltage source; at least one protection device (430, 432) electronically connected in series with the DC voltage source through at least one of said plurality of DC voltage source input terminals; and a rectification circuit comprising an input and an output, said rectification circuit input electrically connected to the AC voltage source through at least one of said plurality of AC voltage source input terminals, said rectification circuit output electrically connected to the DC voltage source through at least one of said plurality of DC voltage source input terminals through said at least one protection device. a power connector comprising: a plurality of alternating current voltage source input terminals for connection to an AC voltage source comprising a first AC source and a second AC source coupled in series and including a ground node therebetween, at least one of said plurality of AC voltage source input terminals configured for electrical connection to the ground node of the AC voltage source; and a plurality of DC voltage source input terminals for connection to a DC voltage source, the DC voltage source comprising a first DC source and a second DC source coupled in series and including a common node therebetween, at least one of said plurality of DC voltage source input terminals configured to electrically couple the common node to the ground of the DC voltage source to the ground node of the AC voltage source; a plurality of alternating current voltage source input terminals for connection to an AC voltage source comprising a first AC source and a second AC source coupled in series and including a ground node therebetween, at least one of said plurality of AC voltage source input terminals configured for electrical connection to the ground node of the AC voltage source; and a plurality of DC voltage source input terminals for connection to a DC voltage source, the DC voltage source comprising a first DC source and a second DC source coupled in series and including a common node therebetween, at least one of said plurality of DC voltage source input terminals configured to electrically couple the common node to the ground of the DC voltage source to the ground node of the AC voltage source; at least one protection device (430, 432) electronically connected in series with the DC voltage source through at least one of said plurality of DC voltage source input terminals; and a rectification circuit comprising an input and an output, said rectification circuit input electrically connected to the AC voltage source through at least one of said plurality of AC voltage source input terminals, said rectification circuit output electrically connected to the DC voltage source through at least one of said plurality of DC voltage source input terminals through said at least one protection device.