Heat Pump Water Heater Circuit
Rheem Performance Platinum ProTerra Hybrid (Low-Amp, 15A): Breaker & Wire Size
The circuit the Rheem Performance Platinum ProTerra Hybrid (Low-Amp, 15A) needs, transcribed from the manufacturer's own spec sheet, with the conductor and ground derived for the stated breaker.
Circuit Spec
| Voltage | 208/240V (240V dedicated) |
| Circuit | dedicated 240V circuit |
| Nameplate element wattage | 2,250 W |
| Nameplate amps | 9.38 A |
| Design amps at 125% (NEC 422.13) | 11.73 A |
| Manufacturer-required breaker | 15 A |
| Conductor for that breaker | #14 Cu |
| Equipment ground | #14 Cu |
| Load-sized circuit (code minimum) | 15A on #14 Cu |
The breaker is the manufacturer-stated value; the conductor and ground derive from that breaker. Under NEC 422.11(E) the overcurrent device must not exceed the rating marked on the appliance, so the nameplate on your unit always governs.
Models & Capacities
Representative models in this line: XE40T10H22U1, XE50T10H22U1, XE65T10H22U1, XE80T10H22U1. Capacities: 40, 50, 65, 80 gallons. The circuit spec above applies across the line as published by Rheem; confirm against the rating plate on the specific unit.
A Dedicated 240V Circuit
Every 240V hybrid is a dedicated-circuit appliance; Rheem states a dedicated 15A / 240V circuit for this line, on #14 copper with a #14 ground.
Source
Circuit data transcribed from the manufacturer: Rheem Performance Platinum ProTerra Hybrid (Low-Amp, 15A) specification, accessed 2026-07-11.
The 'H22' low-amp Rheem hybrid uses a 2,250W element instead of 4,500W, so it fits a 15A / 240V circuit. It is built for a retrofit into an existing 15A run or a service too small for a 30A branch, at the cost of slower resistance-mode recovery.
Frequently Asked Questions
What size breaker does the Rheem Performance Platinum ProTerra Hybrid (Low-Amp, 15A) need?
Rheem specifies a 15A breaker on a dedicated 240V circuit for this line (models XE40T10H22U1, XE50T10H22U1, XE65T10H22U1, XE80T10H22U1). Under NEC 422.11(E) the overcurrent device must not exceed the rating marked on the appliance, so the nameplate governs. The conductor for a 15A breaker is #14 copper with a #14 copper equipment ground.
How many amps does the Rheem Performance Platinum ProTerra Hybrid (Low-Amp, 15A) draw?
With its 2,250W element on, it draws 9.38A at 240V (amps = watts / volts). A fixed storage water heater 120 gallons or less is a continuous load under NEC 422.13, so the circuit is sized at 125%: 11.73A design. In heat-pump mode the draw is far lower; the circuit is sized for the element.
Does the Rheem Performance Platinum ProTerra Hybrid (Low-Amp, 15A) need a dedicated circuit?
Yes. Rheem states a dedicated 15A / 240V circuit for this line, and every 240V hybrid is a dedicated-circuit appliance. For comparison, a standard 4,500W resistance tank draws 18.75A at 240V, 23.44A at the 125% continuous sizing (NEC 422.13).
What wire size for the Rheem Performance Platinum ProTerra Hybrid (Low-Amp, 15A)?
#14 copper conductors for the manufacturer-required 15A breaker, with a #14 copper equipment ground sized to the breaker per NEC Table 250.122. Sized from the load alone: 2,250W / 240V = 9.38A, x1.25 continuous = 11.73A (NEC 422.13), which lands on a 15A code-minimum breaker with #14 copper. The manufacturer's marked maximum governs the installed breaker (NEC 422.11(E)).
Compute Your Unit's Exact Amps
Read the watts off the rating plate and enter them below to get the exact draw at 120V or 240V. The rating plate governs over any typical value.
Other Heat Pump Water Heater Circuits
Rheem ProTerra Plug-in Heat Pump (Dedicated Circuit)
120V plug-in, 15A breaker on #14 Cu.
Rheem ProTerra Plug-in Heat Pump with HydroBoost (Shared Circuit)
120V plug-in, 15A breaker on #14 Cu.
GE Profile GeoSpring 120V Plug-in (FlexCapacity)
120V plug-in, 15A breaker on #14 Cu.
Rheem Performance Platinum ProTerra Hybrid (30A)
240V dedicated, 30A breaker on #10 Cu.
A.O. Smith Voltex AL (Anti-Leak) Hybrid
240V dedicated, 30A breaker on #10 Cu.
A.O. Smith Voltex Hybrid (HPTU, prior generation)
240V dedicated, 30A breaker on #10 Cu.
State ProLine XE Voltex Hybrid
240V dedicated, 30A breaker on #10 Cu.
Bradford White AeroTherm (RE Series) Hybrid
240V dedicated, 30A breaker on #10 Cu.
GE Profile GeoSpring 240V (FlexCapacity)
240V dedicated, 30A breaker on #10 Cu.
Amps Chart (All Lines)
Every line on one table: watts, amps, breaker, conductor, ground.
120V vs 240V
The two product classes side by side: circuit, wiring, and recovery.
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