Reliance Controls Pro/Tran - Manual (Page 6)

4
Wiring the Reliance Transfer Switch to the Load Center
Determine which circuits will be used during an emergency. See the residential wattage
requirement chart on the inside front cover of this manual. If a selected circuit is part of a
multi-wire branch circuit, ensure 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.
The maximum number of circuits available and those that can be used for multi-wire
branch circuits depends on the model of the transfer switch as follows:
Balancing the Load
To maximize the efficiency of your generator,
divide appliance circuits and others requiring
higher wattage between the left and right side
of the transfer switch so that a usage balance
is achieved.
For example, on a 6-circuit transfer switch,
consider wiring the refrigerator to Switch A
and the furnace to Switch D (Figure 3).
Installing 120-volt Circuits
Wire the most critical circuits first, starting with Switch A on the transfer switch. Let's
assume that Switch A will be designated to supply power to the refrigerator.
Model Max Available for multi-wire branch circuits
15114A, 30114A 4 None
31404A, B or C, 20504B, 30504B 4 Circuits B and C.
All 6-Circuit Models
6 Circuits C and D only on indoor models.
Any two adjacent circuits on outdoor models
(models with an "R" prefix).
All 8-Circuit Models 8 Any two adjacent circuits.
All 10-Circuit Models 10 Any two adjacent circuits.
Warning: Failure to properly install a multi-wire branch circuit could result in
overloading the neutral wire.
Figure 3
Warning: Transfer switch circuits with 20 amp breakers (the ones with the red
caps) must be installed on only those branch circuits with 20 amp branch circuit
breakers. Transfer switch circuits with 15 amp breakers can be installed on 15 or
20 amp branch circuits. Do not install any transfer switch circuit on branch
circuits greater than 20 amps.