TC 120
682.98767.00 • 10/04/2018
22
3-10 Making Electrical Connections
TC 120 temperature control systems are designed for three-phase voltage operation. Refer to
the unit nameplate for proper voltage and amperage requirements.
Make sure you provide a correctly sized and protected supply of electrical power to the unit.
Important!
Refer to National Electric Code (NEC) Article 430-24 through 430-26
for proper feeder conductor and supply disconnect sizing.
Maintain a safe ground and disconnect the power supply before servicing the unit.
A qualified electrician should make electrical connections, and disconnect and lock
out electricity using OSHA 29CFR 1910.147 standards when you need a service
call.
Check serial tag voltage and amperage requirements and make sure your electrical
service conforms
before
making any electrical connections. Total running amps for
TC 120 temperature control systems are listed on the nameplate. Customer
connections can be run to the supply terminals from either side of the unit. Make sure
that all three phases are wired correctly. If not wired properly, the unit will run
backwards
.
Again, check the unit nameplate for correct voltage and amperage.
Improper electrical connections
can damage the unit and cause
serious operator injury or death!
Bring properly sized power leads and ground from a fused disconnect (installed by your
electrician) to the unit. Provide external overcurrent protection to the unit, using circuit
breakers or fuses. If you use fuses, make sure that they are dual-element time-delay fuses,
sized according to your electrical code. Make sure that
all
electrical connections are
tight
.