Electrical Information - Hatco GR Series Installation And Operating Manual

Electrical Information

Refer to the appropriate "Electrical Ratings Chart" for unit-
specific electrical information.
WARNING
ELECTRIC SHOCK HAzARD: For hardwired units, all
electrical connections must be in accordance with local
electrical codes and any other applicable codes.
Connections should be made by a qualified, licensed
electrician.
CAUTION
Strip heaters equipped with incandescent lights that
require a circuit breaker larger than 20 amps for the heat
element must have a separate circuit breaker for the
incandescent lights that is 20 amps or less.
NOTE: If the unit being installed is not shown or listed in this
manual, refer to the wiring diagram supplied with the
unit and the installation information on the unit for
further instructions.
Power Supply
Install supply wire and connectors suitable for at least 90°C
(194°F).
• Use a minimum of No. 14 aWG copper wire for individual
circuits up to 15 amps.
• Use a minimum of No. 12 aWG copper wire for individual
circuits 15 to 20 amps.
• Use a minimum of No. 10 aWG copper wire for individual
circuits 20 to 25 amps.
• Use a minimum of No. 8 aWG copper wire for individual
circuits 25 to 30 amps.
NOTE: Refer to the wiring diagram supplied with the unit and
specifications label attached to the unit for specific
electrical information.
Conduit Connection
Units supplied with a right angle fitting and flexible conduit
attached have had all internal connections completed at the
factory. attach the proper power supply leads to the high
temperature lead wires in the conduit.
Conduit
Figure 24. Conduit Connections
NOTE: Refer to the wiring diagram supplied with the unit and
specifications label attached to the unit for specific
electrical information.
Form No. GRCEM1-0611
Right Angle Fitting
25
Power Cord and Plug Models
Units can be supplied with a 1829 mm (6') power cord and plug
attached at the factory if the unit meets the following guidelines:
• 120 volt unit
• Single heating element
• 1829 mm (72") or less in length
• Built-in switch
• Portable mounting using C-Legs or T-Legs supplied by
Hatco or stationary mounting using "S" hooks and
mounting chain supplied by Hatco.
WARNING
ELECTRIC SHOCK HAzARD: Plug unit into a properly
grounded electrical receptacle of the correct voltage, size,
and plug configuration. If plug and receptacle do not
match, contact a qualified electrician to determine and
install proper voltage and size electrical receptacle.
NOTE: Units intended for fixed or permanent mounting cannot
have a power cord attached and must be hardwired
according to local and national electrical codes.
Remote Control Enclosures
Hatco remote control enclosures include switches, wire leads,
and/or indicator lights and are ready for installation.
The RMB Series require one remote control enclosure per strip
heater. The RMB2 Series allows multiple strip heaters to be
connected to one remote control enclosure.
NOTE: Remote control enclosures are available in several
configurations depending on the model. All enclosures
are built in accordance with UL standards to
accommodate switches, indicator lights, and wiring. See
the OPTIONS aND aCCESSORIES section near the
back of this manual for more information.
NOTICE
To prevent premature failure of components due to
excessive heat, Remote Control Enclosures must be
installed outside the strip heater heat zone.
Remote Mounted Control Switches
Optional remote mounted control switches include ON/OFF
toggle switches and infinite control switches. These switches
need to be installed into an approved electrical box/enclosure
(not supplied) by a qualified electrician.
NOTE: When two or more units are mounted where the heat
from one housing tends to raise the temperature of
another, the control switches should be installed in a
remote control enclosure. Units in a multiple installation
should use remote control enclosures.
INSTALLATION