6
C. Connecting the Neutral and Ground Wire
1.
Find the white wire (Neutral) and the green wire (ground)
among the wires from the transfer switch that you have
inserted into the load center.
2.
Strip approximately 5/8” from the end of the white wire.
Locate the neutral bar and partially unscrew a terminal
screw on the bar. Insert the stripped end of the wire into the
side of the bar under the screw and retighten the screw.
(Figure 4)
3.
Locate the ground bar. (It should be labeled.) Connect the
green wire to the ground bar in the same way as in step
#2. In service entrance load centers, the ground bar and
Figure 4
When Installing 120 Volt Circuits
neutral bar are frequently the same; if so, the ground and
neutral wires can be connected to either.
D. Installing 120 Volt Circuits
This section provides instructions for connecting the wires
from your transfer switch to the circuit breakers in your load
center which control your appliances.
You should refer to the load planning you did previously to
insure that side #1 and side #2 of the transfer switch are
balanced. Wire the circuits, starting with any 120V circuit.
If a selected circuit is part of a multi-wire branch circuit, insure the
other branch circuit that shares the neutral is also connected to the
transfer switch. The two circuits must be connected to opposing legs
(phases) of the generator power and a handle tie must be installed on
the switch handles so that both legs are transferred at the same time.
Failure to properly install a multi-wire branch
circuit could result in overloading the neutral wire.
The transfer switch circuits with 20 Amp breakers must be connected only to
branch circuits with 20 Amp breakers in the load center. Do not connect transfer
switch circuits to any branch circuits greater than 20 Amps, except circuits A & B
which may be connected to 30 Amp circuits. Any of the breakers can be changed.
NOTE:
The transfer switch circuits with 15 Amp breakers can be connected to
branch circuits with either 15 or 20 Amp breakers in the load center.
If you will not be installing any 240 Volt or multi-wire circuits,
remove the factory-installed handle tie(s) on the unit
(See
Page 7)
Let’s assume that, according to your load balancing plan, you
will use Switch E to supply power to the furnace (Figure 5)
1.
Turn off the furnace circuit breaker. Disconnect the wire
that is attached to the circuit breaker.
2.
Find the black wire and red wire from the transfer switch
marked E.
3.
Cut the red wire at a length convenient for it to reach to the
furnace circuit breaker. Strip 5/8” from the end of the wire.
Connect the red wire to the furnace circuit breaker and
retighten the screw on the breaker.
4.
Cut the black wire from the transfer switch to a length
convenient for attaching it to the wire you removed from the
furnace circuit breaker in #1. Strip 5/8” from the end of the
wire.
5.
Insert both wires—the one removed from the furnace circuit
breaker and the black wire for Switch E — into an
appropriate wire connecter. Tighten the connection and
push the connected wires back into the wiring compartment
of the load center.
This completes the connection of Switch E for your furnace.
Label Switch E as “Furnace” on the identification circuit
chart.
6.
Repeat Steps 1 through 5 for each of the remaining switches
on your transfer switch according to your load balancing plan,
taking into account the following:
•
See the next section for installing 240 Volt Circuits
•
Remember to “Balance the Load”, dividing appliances
with higher wattages between each phase as best
you can.
(Phase 1 = A, C, E. Phase 2 = B, D, F)
WARNING
WARNING
Figure 5
