Catalog Pg. 102

Backup Power for the Conventional Home

System Examples Incorporating a Gen-Tran Manual Generator Switch

Example #6

Generator and Inverter Feeding Gen-Tran Switch

Advantages:

Least Expensive Installation

Least Disruptive of AC Wiring

Extra Equipment Out of Circuit Path

Disadvantages:

Manual Switching

No Automatic Battery Battery Charging (Must Run Generator)

Selective Circuits Only

Can Use Only 120V Power from Generator

Need transformer for 240V Pump

Manual Battery Maintenance

Example #7

Generator and Stacked Inverters

Feeding Gen-Tran Switch

Advantages:

Least Disruptive of AC Wiring

Extra Equipment Out of Circuit Path

Full 120/240V Operation

Can Use Full Generator Output

Disadvantages:

Manual Switching

Manual Battery Charging (Must Run Generator)

Selective Circuits Only

Notes:

1. In all examples above, a sine wave inverter can be used in the place of the modified sine wave inverter shown. Besides being able to power all types of AC loads, the sine wave inverter has two AC inputs. In many cases this makes generator input switching much easier.

2. In the 120V "only" sub-panel and Gen-Tran wiring schemes shown above, a 120/240V device is used for 120V only. This use is recognized by the National Electrical Code as a valid way to wire a single inverter into a system. This includes the fact that main breakers are usually rated at 100 or 200 amps. Since the inverter limits the feed-through current to 30 or 60 amps, wire with the rating to carry the latter current is allowed to be used.

3. In all cases, the local wiring inspector must approve any wiring scheme. Compliance with local codes and legal requirements is the responsibility of the user. New England Solar Electric Inc., its officers and employees, assume no responsibility for any personal injury, property damage, or loss of any sort suffered from the actions taken based on or inspired by information or advice presented in this catalog.

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