Patent ID: 7611339

Claim:
An apparatus for pumping well fluid, comprising: a submersible pump; a submersible electrical motor operatively connected to the pump, the motor having a housing with a cylindrical head at one end; three slots formed in a sidewall of the head. the slots being spaced circumferentially apart from each other, defining a web between adjacent ones of the slots; a passage leading from each of the slots into an interior of the housing; three metallic impermeable tubes; a fastener on each of the tubes, each of the fasteners being within one of the slots and securing one of the tubes to the head, the webs separating the fasteners from each other; a single electrical conductor within each of the tubes, each of the conductors extending through one of the passages into the interior of the housing for supplying power to the motor; at least one elastomeric insulation layer surrounding each of the conductors; and an annular portion of the insulation layer of each of the electrical conductors being in tight contact with the tube over at least a portion of the axial tube in which it is located to form a seal therebetween.