A-11
INSTALLATION
POWER WAVE 455
A-11MULTIPLE ARC SENSE LEAD AND WORKLEAD PLACEMENT GUIDELINES
Work #2
Sense #2
Power
Source
#2
Power
Source
#1
Arc #1
Arc #2
Work #1
Sense #1
Work #2 Power
Source
#2
Power
Source
#1
Arc #1
Arc #2
Work #1
Sense #1
Sense # 2
Current Flow
Power
Source
#1
Power
Source
#2
Work #1
Sense #1
Work #2
Sense #2
Arc #2
Arc #1
Current Flow
ØCurrent flow from Arc #1
affects sense lead #2
ØCurrent flow from Arc #2
affects sense lead #1
ØNeither sense lead picks up
the correct work voltage,
causing starting and welding
arc instability.

BAD

ØSense #1 is only affected by weld
current from Arc #1
ØSense #2 is only affected by weld
current from Arc #2
ØDue to voltage drops across work piece,
Arc voltage may be low, causing need
for deviation from standard procedures.

BETTER

ØBoth Sense leads are out of the current
paths.
ØBoth Sense leads detect arc voltage
accurately.
ØNo voltage drop between Arc and Sense
lead.
ØBest starts, best arcs, most reliable
results.
BEST
Current Flow