Electrical Service; General; Voltage; Minimum Circuit Ampacity - Manitowoc S Installation, Use & Care Manual

Section 2

Electrical Service

GENERAL

All wiring must conform to local, state and national
codes.

VOLTAGE

The maximum allowable voltage variation is ±10% of the
rated voltage at ice machine start-up (when the electrical
load is highest).
The ice machine must be grounded in accordance
with national and local electrical codes.
All electrical work, including wire routing and grounding,
must conform to local, state and national electrical
codes. The following precautions must be observed:
• The ice machine must be grounded.
• A separate fuse/circuit breaker must be provided for
each ice machine.
• A qualified electrician must determine proper wire
size dependent upon location, materials used and
length of run (minimum circuit ampacity can be used
to help select the wire size).
• The maximum allowable voltage variation is +/-10 of
the rated voltage at ice machine start-up (when the
electrical load is highest).
• Check all green ground screws in the control box and
verify they are tight before starting the ice machine.
Part Number 000000966 03/09
! Warning
! Warning
Observe correct polarity of incoming line voltage.
Incorrect polarity can lead to erratic ice machine
operation and a safety issue. This is especially critical on
230 volt / 50 cycle ice machines.
Fuse/Circuit Breaker
A separate fuse/circuit breaker must be provided for
each ice machine. Circuit breakers must be H.A.C.R.
rated (does not apply in Canada).

MINIMUM CIRCUIT AMPACITY

The minimum circuit ampacity is used to help select the
wire size of the electrical supply. (Minimum circuit
ampacity is not the ice machine's running amp load.)
The wire size (or gauge) is also dependent upon
location, materials used, length of run, etc., so it must be
determined by a qualified electrician.

ELECTRICAL REQUIREMENTS

Refer to Ice Machine Model/Serial Plate for voltage/
amperage specifications.

GROUND FAULT CIRCUIT INTERUPTER

Ground Fault Circuit Interupter (GFCI/GFI) protection is
a system that shuts down the electric circuit (opens it)
when it senses an unexpected loss of power,
presumably to ground. Manitowoc Ice does not
recommend the use of a GFCI/GFI circuit protection with
our equipment. If code requires the use of a GFCI/GFI
then you must follow the local code. The circuit must be
dedicated, sized properly and there must be a panel
GFCI/GFI breaker. We do not recommend GFCI/GFI
outlets as they are known for more intermittent nuisance
trips than panel breakers.

MINIMUM POWER CORD SPECIFICATIONS

Maximum Minimum
Breaker Size Wire Size
15 amp 14 gauge
20 amp 12 gauge
30 amp 10 gauge
40 amp 8 gauge
If a power cord is used the wire size to the receptacle is
dependant upon location, materials used, length of run, etc., so
it must be determined by a qualified electrician. Local, state or
national requirements will supersede our minimum
requirements.
Installation Instructions
Important
Maximum Length of
Power Cord
6 feet (1.83 m)
6 feet (1.83 m)
6 feet (1.83 m)
6 feet 1(.83 m)
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