Ground Fault Protection - Miller Electric Intellifire 250 Owner's Manual

5-6. Ground Fault Protection

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Ground fault protection circuitry
automatically shuts down the power
source output if a potentially
hazardous condition exists at the
heating device connected to the
power source (e.g. insulation has
broken down on a heating blanket
causing the conductor to come into
contact with the workpiece or a
heating coil touches the workpiece
causing a short in the output circuit).
The supplied ground lead must be
connected between the workpiece
and power source to provide
proper ground fault protection
from a short in the output circuit.
1 Power Source
2 Receptacle
3 Plug
To connect plug, align key with key-
way, insert end into receptacle, and
rotate plug until tight.
4 Handle
5 Magnet
6 Workpiece
Use handle to place magnet on the
workpiece.
Ref. ST-801 826-C / Ref. 801 828-C
OM-184 227 Page 13