Miller Electric Big 40 CAT Owner's Manual page 72

12-10. Typical Connections To Supply Standby Power
Y Properly install and ground this equipment according to
1
Utility
Electrical
Service
Y Have only qualified persons perform
these connections according to all
applicable codes and safety practic-
es.
Y Properly install and ground this
equipment according to its Owner's
Manual and national, state, and local
codes.
.
Customer-supplied equipment is re-
quired if generator will supply standby
power during emergencies or power out-
ages.
1 Utility Electrical Service
2 Transfer Switch (Double-Throw)
Notes
OM-4406 Page 66
its Owner's Manual and national, state, and local codes.
2
Transfer Switch
5
Essential
Loads
Switch transfers the electrical load from
electric utility service to the generator. Trans-
fer load back to electric utility when service is
restored.
Install correct switch (customer-supplied).
Switch rating must be same as or greater
than the branch overcurrent protection.
3 Fused Disconnect Switch
Install correct switch (customer-supplied) if
required by electrical code.
4 Welding Generator Output
Generator output voltage and wiring must be
consistent with regular (utility) system volt-
age and wiring.
Return To Table Of Contents
3
Fused
Disconnect
Switch
(If Required)
Connect generator with temporary or perma-
nent wiring suitable for the installation.
Turn off or unplug all equipment connected to
generator before starting or stopping engine.
When starting or stopping, the engine has
low speed which causes low voltage and
frequency.
5 Essential Loads
Generator output may not meet the electrical
requirements of the premises. If generator
does not produce enough output to meet all
requirements, connect only essential loads
(pumps, freezers, heaters, etc. − See Sec-
tion 12-4).
Work like a Pro!
Pros weld and cut
4
Welding
Generator
Output
safely. Read the
safety rules at
the beginning
of this manual.