Effective July 2007
CABLE CONNECTIONS
Test all power cables prior to connection to the unit
to ensure that conductors or cable insulation has not
been damaged while being pulled into position.
Power cables are to be connected to solderless
screw type lugs located at the top of the bypass
switch. Refer to wiring diagrams supplied with unit
for power termination identification. Verfiy that the
lugs supplied will accommodate the power cables
being used. ATSBI units will accommodate the wire
sizes as noted in Table 1.
DE-ENERGIZE ALL POWER CABLE OR CONTROL
WIRING INTENDED FOR CONNECTION TO THE
UNIT. CONTACT WITH LIVE POWER CONNECTORS
CAN CAUSE SEVERE PERSONAL INJURY OR
DEATH.
Carefully strip insulation from the power cables
avoiding nicking or ringing of the conductor strands.
Prepare stripped conductor termination end by
cleaning with a wire brush. If aluminum conductors
are used, apply an appropriate joint compound to
the clean conductor surface area. Tighten cable lugs
to the torque values identifyed on the label affixed
to the unit immediately adjacent to the lugs.
5
I.L. 16913A
WARNING
WIRE SIZE FOR EXTERNAL POWER CABLE CONNECTIONS
PER PHASE CONNECTION. CU/AL WIRE
RATING
200A - 400A
600A
NORMAL
(1) 3/0 – 750MCM – OR
(2) 400 – 500MCM
(2) 3/0 – 250MCM
EMERGENCY
(1) 3/0 – 750MCM – OR
(2) 400 – 500MCM
(2) 3/0 – 250MCM
LOAD
(1) 3/0 – 750MCM – OR
(2) 400 – 500MCM
(2) 3/0 – 250MCM
NEUTRAL**
(3) 3/0 – 750MCM
(6) No. 4 – 500MCM
GROUND
(1) No. 14 – 1/0
(1) No. 14 – 1/0
(1) No. 6 – 2/0
(1) No. 6 – 2/0
RATING
240V 100 - 200A
800 - 1000A
480 - 600V 100 - 150A
NORMAL
(1) No. 6 – 300MCM
(4) 4/0 – 500MCM
EMERGENCY
(1) No. 6 – 300MCM
(4) 4/0 – 500MCM
LOAD
(1) No. 6 – 300MCM
(4) 4/0 – 500MCM
NEUTRAL
(1) No. 6 – 300MCM
(12) 4/0 – 500MCM
GROUND
(1) No. 14 – 1/0
(1) No. 14 – 1/0
(1) No. 6 – 2/0
(1) No. 6 – 2/0
Table 1
