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Installation
3
Electric Installation
WARNING Install product to rated line voltage in accordance to current local and national codes and
regulations.
WARNING All Bradley heaters must be fused in accordance with National Electric Code (NEC) for the
full load amperage listed on the nameplate rating for each heater.
WARNING Failure to properly ground the unit(s) per the National Electric Code could result in injury
or death.
A
Open enclosure door .
NOTICE! Any option that requires field wiring
must be done with 600V cable per the
schematic that was shipped with the
heater.
NOTICE! Use a 4-core cable or multi-stranded
machine tool wire from an approved
isolating 3-pole switch or circuit
breaker.
NOTICE! Make sure the electrical cable is the
correct size to carry 100% of the full
load current. See table for proper
wire sizes.
Using a hole punch, cut a hole the
proper size for conduit connection;
B
large enough for the wire size for
each heater . The connectors need to
be rated NEMA4/4X to ensure proper
sealing of the enclosure .
C
Run wires through the appropriate
size conduit .
Connect wires to the system terminal
D
block or fused disconnect inside the
enclosure .
Connect the ground wire to the stud
E
provided with the "Ground" label
beneath it .
Bradley • 215-1820 Rev. D
ELECTRICAL SPECIFICATIONS FOR HEATER (3 PHASE)
Model
Voltage
C1N183/600D
600
C1N253/600D
600
C1N183/480D
480
C1N253/480D
480
C1N183/415D
415
C1N253/415D
415
C1N183/400D
400
C1N253/400D
400
C1N183/380D
380
C1N253/380D
380
* Based on the NEC Table 310 .15 for 75°C insulated copper wire @ 30°C
Ambient . Aluminum wire requires larger gauges .
Not all available (optional) voltages are listed in table.
1/10/2022
C1N Series Tankless Heater
Min Wire
Amps
kWatts
Size
18
18
10 AWG*
24
25
10 AWG*
22
18
10 AWG*
30
25
8 AWG*
18
13
10 AWG*
26
19
8 AWG*
17
12
12 AWG*
24
17
10 AWG*
17
11
12 AWG*
24
15
10 AWG*
7
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