10-10. Typical Connections To Supply Standby Power

 

 

 

 

 

 

 

1

Power Company Service

 

 

 

 

Meter

 

 

 

 

2 Main and Branch Overcurrent

 

 

 

 

Protection

 

 

 

 

3 Double-Pole, Double-Throw

 

 

 

 

Transfer Switch

. Customer-supplied equipment is required if

 

Obtain and install correct switch.

 

Switch rating must be same as or

generator is to supply standby power during

 

greater than the branch overcur-

emergencies or power outages.

 

rent protection.

 

 

 

 

4 Circuit Breakers or Fused

1

240 V

 

 

Disconnect Switch

 

 

Obtain and install correct circuit

 

 

 

 

 

 

breakers or switch.

120/240 Volt

120 V

 

5

Extension Cord

60 Hz

 

Select as shown in Section 10-11.

Three-Wire

120 V

 

 

 

 

 

Service

 

6

Generator Connections

 

 

 

 

 

Connect terminals or plug of ade-

 

Neutral

 

quate amperage capacity to cord.

 

 

safety practices.

2

 

3

Follow all applicable codes and

 

 

 

 

 

240 V

 

Turn off or unplug all equipment

 

 

 

connected to

generator before

 

 

 

starting or stopping engine. When

 

120 V

 

starting or stopping, the engine has

Load

 

low speed which causes low volt-

 

 

120 V

 

age and frequency.

 

 

 

 

 

7

Load Connections

7

 

4

 

 

 

 

 

 

 

 

 

CB

 

 

 

 

 

or

 

Item 4 is not necessary if circuit

 

F1

 

protection is already present in

 

 

welding

generator

auxiliary

 

 

 

 

 

 

power output circuit.

 

6

 

5

 

 

 

 

 

 

 

 

 

240 V

 

 

 

 

120/240 Volt

120 V

 

 

 

 

Single-Phase

 

 

 

 

 

Three-Wire

120 V

 

 

 

 

Generator Output

 

 

 

 

 

Connection

Ground

 

 

 

 

S-0405-A

OM-129 647 Page 50

Page 54
Image 54
Miller Electric OM-129, 500DX R Customer-supplied equipment is required if, Generator is to supply standby power during