beautypg.com

10. typical connections to supply standby power – Miller Electric Big Blue 502P User Manual

Page 50

background image

OM-491 Page 46

10-10. Typical Connections To Supply Standby Power

S-0405-A

1

Power Company Service

Meter

2

Main and Branch Overcurrent

Protection

3

Double-Pole, Double-Throw

Transfer Switch

Obtain and install correct switch.

Switch rating must be same as or

greater than the branch overcurrent

protection.
4

Circuit Breakers or Fused

Disconnect Switch

Obtain and install correct switch.
5

Extension Cord

Select as shown in Section 10-11.
6

Generator Connections

Connect terminals or plug of ade-

quate amperage capacity to cord.

Follow all applicable codes and

safety practices.
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 volt-

age and frequency.
7

Load Connections

.

Customer-supplied equipment is required if
generator is to supply standby power during

emergencies or power outages.

120/240 Volt

60 Hz

Three-Wire

Service

240 V

120 V

120 V

Neutral

240 V

120 V

120 V

120/240 Volt

Single-Phase

Three-Wire

Generator Output

Connection

Ground

F1

or

CB

240 V

120 V

120 V

Load

1

2

3

6

7

4

5