Miller Electric Big Blue 502P User Manual

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OM-491 Page 23

SECTION 6 − OPERATING AUXILIARY EQUIPMENT

6-1. 120 Volt And 240 Volt Duplex Receptacles

120 V 20 A AC GFCI Recep-

tacle GFCI1

240 V 20 A AC Receptacle

RC1

Receptacles supply 60 Hz single-

phase power at weld/power speed.
If a ground fault is detected, GFCI

Reset button pops out and

receptacle does not work. Check

for faulty tools plugged in

receptacle. Press button to reset

GFCI1.

At least once a month, run en-
gine at weld/power speed and

press test button to verify GFCI

is working properly.

Circuit Breaker CB1

Circuit Breaker CB2

Circuit Breaker CB3

CB1 and CB3 protect RC1 from

overload. If CB1 or CB3 opens,

RC1 does not work. 120 volts may

still be present at RC1. Press but-

ton to reset breaker.
CB2 protects GFCI1 from overload.

If CB2 opens, GFCI1 does not

work. Press button to reset breaker.

If a circuit breaker continues to
open, contact Factory Autho-

rized Service Agent.

Maximum output is 1.8 kVA/kW

from GFCI-1 and 3.6 kVA/kW from

RC1. Maximum output from all re-

ceptacles is 4 kVA/kW.

Auxiliary power is not affected
by weld output.

EXAMPLE: If 13 A is drawn from

RC1, only 7 A is available at GFCI1:
(240 V x 13 A) + (120 V x 7 A) = 4.0

kVA/kW

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