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Unless a service entrance rated transfer switch is used, a
main service disconnect must be located before the transfer
switch. The transfer switch must be installed between the
utility service entrance and the building distribution panel.
2. A service entrance rated transfer switch is installed between
the service entrance and the main distribution panel. The
service entrance rated switch becomes the main service
so no service disconnect is needed. The existing main
distribution panel becomes a sub-panel.
3. The grounding that is normally in the main panel must be
accomplished in the service entrance rated switch and must
be disconnected in the existing distribution panel. Refer to the
National Electrical Code (NEC) for complete information on
grounding and bonding.
BATTERY CHARGER INSTALLATION
1. The battery charger is to be installed in the generator when
using an RTSN or RTSE transfer switch. Refer to the Battery
Charger Installation Guide for details.
ELECTRICAL CONNECTIONS
1. Connect the power leads from both the generator and the
utility to the appropriate lugs in the transfer switch. The lugs
are clearly marked in the switch.
N = Normal Utility Supply
E = Generator Connection Panel
T = Load Distribution Panel
2. Neutral wires from both the utility and the generator are
connected to the same neutral lug in the switch.
3.
Connect the control wires from the generator to the terminal
block in the transfer switch. The terminals are marked N1, N2, 23
and (194 or 15B). If the fourth terminal in the transfer switch is
labeled 194, wire 15B from the generator will connect to terminal
194 in the transfer switch.
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