Wiring Diagrams — Therm-O-Disc Thermostats (Type 59T)
2
4
1
2
2
3
THERMOSTAT
& HIGH TEMP.
LIMIT (ECO)
4
G
*
L2
BLUE
YELLOW
TM 1
BLUE
L1
1
3
1
3
1
3
2
4
2
4
2
4
1
4
1
4
1
4
2
2
JUNCTION
BOX
L2
YELLOW
JUNCTION
BOX
JUNCTION
BOX
RED
*
2
1
3
1
3
2
4
2
4
UPPER
HEATING
ELEMENT
LOWER
THERMOSTAT
& HIGH TEMP
LIMIT (ECO)
1
LOWER
THERMOSTAT
1
1
UPPER THERMOSTAT
& HIGH TEMP. LIMIT
(ECO)
RED
LOWER
THERMOSTAT
& HIGH TEMP
LIMIT (ECO)
RED
BLACK
UPPER
HEATING
ELEMENT
BLACK
RED (10 GA)
BLACK (10 GA)
RED (10 GA)
UPPER
HEATING
ELEMENT
BLUE
RED
1
UPPER
HEATING
ELEMENT
LOWER
THERMOSTAT
& HIGH TEMP
LIMIT (ECO)
L2
UPPER THERMOSTAT
& HIGH TEMP.
LIMIT (ECO)
G
BLACK
*
UPPER
HEATING
ELEMENT
JUNCTION
BOX
G
BLACK
L1
BLACK (10 GA)
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
L1
YELLOW
YELLOW
120 V ONLY
L2
BLACK
HEATING
ELEMENT
SINGLE ELEMENT
*
UPPER THERMOSTAT
& HIGH TEMP. LIMIT
(ECO)
3
G
L1
BLACK TM 2
1
TM2
JUNCTION BOX
L2
BLUE
BLUE
BLACK
2
*
YELLOW
1
2
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
BLUE
4
G
RED
2
CONNECTOR TO "OFF PEAK"
METER (TIMER)
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
YELLOW
3
L1
BLUE
1
TM1
TM2
YELLOW
WHITE
1
L2
UPPER THERMOSTAT
& HIGH TEMP. LIMIT (ECO)
THERMOSTAT
& HIGH TEMP.
LIMIT (ECO)
2
*
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
UPPER THERMOSTAT
& HIGH TEMP. LIMIT (ECO)
1
G
BLACK
(10 GA)
BLACK
JUNCTION
BOX
L1
JUNCTION BOX
N
RED
(10 GA)
G
H
DOUBLE ELEMENT
NON-SIMULTANEOUS
WITH 3 WIRE OUTLET
DOUBLE ELEMENT
NON-SIMULTANEOUS
WITH 4 WIRE OUTLET !
DOUBLE ELEMENT
NON-SIMULTANEOUS
TO SECOND POWER SOURCE,
"OFF PEAK" METER, OR TIMER
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
BLUE
(10 GA)
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
YELLOW
(10 GA)
FIG. A-1
DOUBLE ELEMENT
SIMULTANEOUS OPERATION
WITH 4 WIRE OUTLET
BLUE
DOUBLE ELEMENT
SIMULTANEOUS OPERATION
2
1
1
2
2
1
2
BLACK
LOWER
THERMOSTAT
BLACK
BLACK
RED
2
BLACK
RED
2
BLACK
BLACK
2
RED
1
HEATING
ELEMENT
LOWER
HEATING
ELEMENT
LOWER
HEATING
ELEMENT
SINGLE ELEMENT
FIG. A-2
FIG. B
FIG. C
LOWER
HEATING
ELEMENT
LOWER
HEATING
ELEMENT
LOWER
HEATING
ELEMENT
FIG. D
FIG. E
FIG. F
! This water heater is factory equipped for two (2) wire connection to
electrical power. For use with "off-peak" meter (timer) remove wire
nut from red and black leads and connect to "off-peak" meter (timer).
* Grounding conductor may be required.
Refer to Wiring Section of Manual
THIS ELECTRIC WATER HEATER IS WIRED AS INDICATED ABOVE OR BELOW
DOUBLE ELEMENT
SIMULTANEOUS OPERATION
Wiring Diagrams
Electric Water Heaters for
3 - Phase Applications
3- PHASE BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
3- PHASE BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
L3
L1
L2
L2
L1
L3
G
G
YELLOW
4
UPPER
HEATING
ELEMENT
LOWER
THERMOSTAT
& HIGH TEMP
LIMIT (ECO)
3
2
4
1
2
LOWER
HEATING
ELEMENT
FIG. G
2
BLACK
BLACK
2
1
RED
1
LOWER
HEATING
ELEMENT
FIG. H
RED
UPPER
HEATING
ELEMENT
1
UPPER THERMOSTAT
& HIGH TEMP. LIMIT (ECO)
1
YELLOW
LOWER
THERMOSTAT
& HIGH TEMP
LIMIT (ECO)
*
BLUE
3
4
2
RED (10 GA)
BLUE
2
1
2
BLUE
BLACK (10 GA)
1
BLACK
3
4
UPPER THERMOSTAT
& HIGH TEMP. LIMIT (ECO)
1
2
YELLOW
BLUE (10 GA)
YELLOW (10 GA)
*
Therm-O-Disc Thermostats
(Type 59T)
For the connection of this water
heater to a 3-Phase Branch Circuit,
connect field wir ing to the water
heater as indicated in the ap propri ate wiring diagram at right. A sep arate junction box is being supplied
with this water heater (check bot tom of carton) to accomodate wir ing
and conduit con nections. Install the
Junction Box as shown on the Installation/Instruction Sheet in cluded
in the plastic bag at tached to the
heater.
DOUBLE ELEMENT
NON-SIMULTANEOUS
TECHNICAL SERVICE DEPARTMENT
Technical Service Bulletin
1-800-432-8373
Heating Element Properties - Voltage, Amps and Ohms; Recovery; Circuit Breaker
Please check all local electrical codes before installing or changing wiring on electric water heaters.
Voltage, Amps and Ohms
Wattage
Rating of
Heating
Element
600
750
1000
1250
1500
2000
2500
3000
3500
3800
4000
4500
5000
5500
6000
120 Volts
208 Volts
240 Volts
277 Volts
480 Volts
Amps Ohms Amps Ohms Amps Ohms Amps Ohms Amps Ohms
5.0
24.0
2.9
72.1
2.5
96.0
2.2
127.8
1.3
384.0
6.3
19.2
3.6
57.7
3.1
76.8
2.7
102.3
1.6
307.2
8.3
14.4
4.8
43.3
4.2
57.6
3.6
76.7
2.1
230.4
10.5
11.5
6.0
34.6
5.2
46.1
4.5
61.4
2.6
184.3
12.5
9.6
7.2
28.8
6.3
38.4
5.4
51.2
3.1
153.6
16.7
7.2
9.6
21.6
8.3
28.8
7.2
38.4
4.2
115.2
20.8
5.8
12.0
17.3
10.4
23.0
9.0
30.7
5.2
92.2
25.0
4.8
14.4
14.4
12.5
19.2
10.8
25.6
6.3
76.8
--16.8
12.4
14.6
16.5
12.6
21.9
7.3
65.8
--18.3
11.4
15.8
15.2
------19.2
10.8
16.7
14.4
14.4
19.2
8.3
57.6
--21.6
9.6
18.8
12.8
16.2
17.1
9.4
51.2
--24.0
8.7
20.8
11.5
18.1
15.3
10.4
46.1
--26.4
7.9
22.9
10.5
19.9
14.0
11.5
41.9
--28.8
7.2
25.0
9.6
21.7
12.8
12.5
38.4
Recovery in Gallons per Hour
Heating
Element
Wattage
2000
2500
3000
3500
3800
4000
4500
5000
5500
6000
9000
12,000
Temperature Rise - Degrees Fahrenheit
400
500
600
700
800
900
1000
1100
1200
1300
1400
21
26
31
36
39
41
47
52
57
62
92
123
17
21
25
29
31
33
37
41
46
49
74
98
14
17
21
24
26
28
31
34
38
41
61
82
12
15
18
21
22
24
27
30
33
35
53
70
10
13
16
18
20
21
23
26
28
31
46
61
9
12
14
16
17
18
21
23
25
27
41
55
8
10
12
15
16
17
19
21
23
25
37
49
8
10
11
13
14
15
17
19
21
22
34
45
7
9
10
12
13
14
16
17
19
21
31
41
6
8
10
11
12
13
14
16
18
19
28
38
6
7
9
10
11
12
13
15
16
18
26
35
Technical Competence, Product Confidence
Page 1 of 3
1305.DOC
TECHNICAL SERVICE DEPARTMENT
Technical Service Bulletin
1-800-432-8373
Heating Element Properties - Voltage, Amps and Ohms; Recovery; Circuit Breaker
Please check all local electrical codes before installing or changing wiring on electric water heaters.
Circuit Breaker and Wire Size
Total
Water
Heater
Wattage
3000
3800
4000
4500
5000
5500
6000
8000
9000
10,000
11,000
12,000
P
h
a
s
e
1
3
1
--1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
Recommended Over
Current Protection
(Fuse or Circuit Breaker)
Amperage Rating
208V 240V 277V 480V
20
20
15
15
20
20
--15
25
20
------------25
25
20
15
25
25
--15
30
25
25
15
30
25
--15
30
30
25
15
30
30
--15
35
30
25
15
35
30
--15
40
35
30
20
3
530
--15
50
45
40
25
45
40
--20
--50
45
25
50
45
--25
----50
30
--50
--25
----50
30
--50
--25
------35
------30
Copper Wire Size –
AWG Based on N.E.C.
Table 310-16 (750C.)
208V
12
12
10
--10
10
10
10
10
10
8
8
8
8
8
8
--8
-------------
240V
12
12
10
--10
10
10
10
10
10
10
10
8
10
8
8
8
8
--8
--8
-----
277V
14
-----12
--10
--10
--10
--10
--8
--8
--8
--8
-------
480V
14
14
----14
14
14
14
14
14
14
14
12
14
10
12
10
10
10
10
10
10
8
10
Technical Competence, Product Confidence
Page 2 of 3
1305.DOC
TECHNICAL SERVICE DEPARTMENT
Technical Service Bulletin
1-800-432-8373
Heating Element Properties - Voltage, Amps and Ohms; Recovery; Circuit Breaker
Please check all local electrical codes before installing or changing wiring on electric water heaters.
Special 120-Volt Applications
Heating
Element
Wattage
Recommended Over
Current Protection
(Fuse or Circuit Breaker)
Amperage Rating
120V
20
20
25
30
35
Recovery
in Gallons
per Hour
1500*
1700
2000
2500
3000
7.75
8.8
10.3
12,.9
15.5
Copper Wire Size –
AWG Based on N.E.C.
Table 310-16 (750C.)
120V
12
12
10
10
8
* Less; than 1500 watts may be wired 14 gauge with 15 amp protection. Check local electrical codes.
The 4500 Watt Standard
Wattage
Rating of
Heating
Element
4500
120 Volts
208 Volts
240 Volts
277 Volts
480 Volts
Amps Ohms Amps Ohms Amps Ohms Amps Ohms Amps Ohms
--21.6
9.6
18.8
12.8
16.2
17.1
9.4
51.2
Temperature Rise - Degrees Fahrenheit
4500
Total
Water
Heater
Wattage
4500
400
47
P
h
a
s
e
1
3
500
37
600
31
700
27
800
23
900
21
Recommended Over
Current Protection
(Fuse or Circuit Breaker)
Amperage Rating
208V 240V 277V 480V
30
25
25
15
30
25
--15
1000
19
1100
17
1200
16
1300
14
1400
13
Copper Wire Size –
AWG Based on N.E.C.
Table 310-16 (750C.)
208V
10
10
240V
10
10
277V
10
---
480V
14
14
Technical Competence, Product Confidence
Page 3 of 3
1305.DOC