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16 49-50300-2
ELECTRICAL CONNECTIONS
A separate branch circuit with copper conductors,
overcurrent protective device and suitable disconnecting
means must be provided by a qualified electrician.
All wiring must conform to local codes or latest edition of
National Electrical Code ANSI/NFPA 70.
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fitting is provided for field wiring connections.
The voltage requirements and wattage load for the water
heater are specified on the rating label on the front of the
water heater.
The branch circuit wiring should include
either:
1. Metallic conduit or metallic sheathed cable
approved for use as a grounding conductor and
installed with fittings approved for the purpose.
2. Nonmetallic sheathed cable, metallic conduit or
metallic sheathed cable not approved for use
as a ground conductor shall include a separate
conductor for grounding. It should be attached to
the ground terminals of the water heater and the
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To connect power to the water heater:
1. Turn the power off.
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top cover.
3. Install L1 to L1, L2 to L2 and ground to the green
ground wire connected to the bottom of the junction
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NOTE: Install electric connections according to local
codes or latest edition of National Electrical Code
ANSI/NFPA 70.
WARNING
Proper ground connection is
essential. The presence of water in the piping and
water heater does not provide sufficient conduction
for a ground. Nonmetallic piping, dielectric unions,
flexible connectors, etc., can cause the water heater
to be electrically isolated. Do not disconnect factory
ground.
240V
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cover
Junction
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Factory Ground
House Ground
(Green)
L2
(Red)
L1
(Black)
The manufacturer’s warranty does not cover any damage
or defect caused by installation, attachment or use of any
type of energy-saving or other unapproved devices (other
than those authorized by the manufacturer) into, onto or in
conjunction with the water heater. The use of unauthorized
energy-saving devices may shorten the life of the water
heater and may endanger life and property.
The manufacturer disclaims any responsibility for such
loss or injury resulting from the use of such unauthorized
devices.
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blanket kits, the manufacturer’s instructions included with
the kit must be carefully followed.
Application of any external insulation, blankets or water
pipe insulation to this water heater will require careful
attention to the following:
• Do not cover the temperature and pressure-relief valve.
• Do not cover access panels to the heating elements.
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water heater.
• Do not cover the operating or warning labels attached
to the water heater or attempt to relocate them on the
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• Do not block the air inlet/outlets in the top covers or rear
of the unit.
NOTE: This guide recommends minimum branch
circuit sizing based on the National Electric Code.
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connections.
BRANCH CIRCUIT SIZING GUIDE
Total Water Recommended Over-Current Protection
Heater Wattage (fuse or circuit breaker amperage rating)
208V 240V 277V 480V
3,000 20 20 15 15
4,000 25 25 20 15
4,500 30 25 25 15
5,000 30 30 25 15
5,500 35 30 25 15
6,000 40 35 30 20
8,000 50 45 40 25
9,000 – 50 45 25
10,000 – – 50 30
11,000 – – 50 30
12,000 – – – 35
Total Water Copper Wire Size AWG Based
Heater Wattage on N.E.C. Table 310-16 (167°F/75°C.)
208V 240V 277V 480V
3,000 12 12 14 14
4,000 10 10 12 14
4,500 10 10 10 14
5,000 10 10 10 14
5,500 8 10 10 14
6,000 8 8 10 12
8,000 8 8 8 10
9,000 – 8 8 10
10,000 – – 8 10
11,000 – – 8 10
12,000 – – – 8
Installation Instructions
INSTALLATION INSTRUCTIONS
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