INSTALLATION
Installation of the ASCO Series 165 automatic transfer switch must be performed by a licensed electrician. It must be installed according to the National Electrical Code and all local electrical code requirements. Refer to the installation drawing and wiring diagram.
!
MALFUNCTION or SHORTENED LIFE
Protect the unit from construction grit and metal chips to prevent malfunction or shortened life.
Remove the enclosure cover and inspect the unit for ship– ping damage. If damage is evident do not install the unit. Type 1 enclosure is for indoor use only (refer to local codes for Type 4 use). Mount the automatic transfer switch vertically to a rigid supporting structure. Level all mounting points with flat washers behind the holes to avoid distortion of enclosure.
ELECTRICAL LINE CONNECTIONS
Installation wiring must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all local electrical code requirements.
The automatic transfer switch must be protected by suitably sized circuit breakers feeding the preferred and alternate source terminals. The ratings of the circuit breakers must be based on the requirements of the National Electrical Code for its nameplate ampere and short circuit withstand ratings. See the wiring diagram provided with the unit.
ELECTROCUTION HAZARD |
Turn off utility power and turn off the |
generator to prevent electrocution |
when wiring the transfer switch. |
CABLE SPACERS (200 and 230 amp. units)
Three cable spacers are included with 200 and 230 ampere size transfer switches. Run the power cables through the cable spacers as shown here and position the cable spacers approximately 1½ inches from the terminal lugs. Use copper cables for 200 and 230 amp. transfer switches.
load | L3 | L7 |
| cable spacers |
1 ½ inch approximate
from terminal lugs
L2 L6 alternate source (generator)
200 & 230 amp. transfer switches require cable spacers and copper cables
cable spacer
L5
L1 preferred source (utility)
!
CABLE LOOSENING DUE TO
CABLE CONNECTIONS (see wiring diagram)
Prepare the wires for connection as follows: strip the insulation; avoid nicking or ringing the conductors when stripping the cable. Remove surface oxides from conductors by cleaning with a wire brush. Apply electrical joint compound and wipe away excess. Insert prepared cable into lug and tighten the lug to the torque specified on the rating label on the transfer switch.
Connect the preferred source (utility) line 1 and 2 wires to the terminal lugs marked L1 and L5 at the bottom. Connect the alternate source (generator) line 1 and 2 wires to the terminal lugs marked L2 and L6 at the upper middle. Connect the load line 1 and 2 wires to the terminal lugs marked L3 and L7 at the top of the transfer switch. Neutral and ground terminals are provided.
GENERATOR STARTING CONTACTS
Before wiring the generator starting contacts refer to the generator manufacturer’s installation manual for require- ments. Make all connections to the controller with the gen- erator battery disconnected. Verify that the ignition switch is in the OFF position. Connect the generator starting con- tacts to the appropriate terminals on terminal block TB7 on the Controller (CP). See the wiring diagram provided with the unit.
For wiring convenience terminal block TB7 has a removable plug. Reconnect the plug with terminal screws facing inward.
!
CONTROLLER DAMAGE. Observe polarity when connecting the generator battery to the controller. Refer to wiring diagram. Be sure to reinstall the TB7 block with terminal screws facing inward.
removable
terminal
block TB7
Be sure to |
| |
reinstall |
| |
with | digital | |
terminal | ||
controller | ||
screws |
| |
facing |
| |
inward. |
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