Redring RP17PT Handbook page 5

Tankless electric water heaters
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IMPORTANT
When the Powerstream Pro is not within sight of the electrical circuit breakers, a circuit breaker lockout or
additional local means of disconnection for all non-grounded conductors must be provided that is within
sight of the appliance. (Ref NEC 422.31.)
The RP17PT requires
two independent 240V
AC circuits protected
by two separate and
independent double
pole breakers (as
shown) rated at 40 A
each.
The minimum recommended wire size is 8 AWG. (The terminal block will accept cables up to 6
AWG size.)
The cable entry is via the 1 ¼ inch cable entry hole on the bottom right hand edge of the backplate.
Strip back the insulation on the power wires about ½ inch. Connect the live wires to the terminals
marked "L1" and "L2." There are two pairs of live wires i n the RP17PT and three pairs of live wires
in the RP27PT.
Any insulation on the ground wire should be stripped back about ¾ inch. The ground lead must be
connected to the pillar terminal marked "GR". (See Diagrams 2 and 3 below).
Make sure the terminal block screws are tightened securely. Loose connections can cause wires to
heat up.
Make sure that the ground wire is wrapped around its terminal stud and into the saddle washer. The
nut should be tightened securely.
Attach the front cover and tighten the retaining screws.
The RP27PT requires
three independent 240V
AC circuits protected
by three separate and
independent double
pole breakers (as
shown) rated at 40 A
each.
5

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