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Essential circuit isolation – Briggs & Stratton 50A NEMA 1 User Manual

Page 6

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6

Briggs & Stratton Power Products Manual Transfer Switch

Installation and Owner’s Manual

ESSENTIAL CIRCUIT

ISOLATION

Essential electrical loads are loads that will be powered by
the Standby Generator System. Essential loads are grouped
together and wired into the transfer switch.

TO THE INSTALLER: Consult with Standby
Generator System owner(s) to discuss their
“Selection of Essential Circuits”, described in
owner’s manual.

Ensure that the total of the selected load circuits fed by this
transfer switch are within the generator's rated capacity.

The following requirements apply to this type of isolation
system:

• The Manual Transfer Switch is installed after the main

distribution panel.

• The Manual Transfer Switch has a load rating of 60 Amps.

This is the maximum load rating of the essential loads.

All wiring must conform to national, state and local codes.

The illustration in Figure 2 depicts the Standby Generator
System and assumes the utility is supplying 120/240 Volt,
single-phase electrical service.

Figure 2 — Typical System Diagram with Essential Circuits

To Utility Power

Watt Meter

Main Distribution Panel

To Air Conditioner (240V)

To Other Circuits (120V)

To Range

To Water Heater

240V

To Briggs & Stratton

Standby Generator

120V To Microwave

120 V To Bathroom

240V To Well Pump

120V To Sump Pump

120V

To Furnace Blower

To Lights

To Refrigerator

120V To Freezer

Manual Transfer Switch

(in utility position)

Neutral

Utility Supply

Generator Supply