Installation Manual Owner manual

MULTIPLE AC SOURCES WITH THE FX INVERTER

When a system has the option of using either a generator or the utility grid as their AC input:

• BoththeAC“Hot”andAC“Neutral”linesmustbeconnectedtotheappropriatesource.

• Aconnectioncanbemadeusingasingle-pole,double-throwswitch(availablefromelectrical

component suppliers) which has one connection each for AC hot wire.

•Thisswitchmustberatedtohandlethesystem’smaximumACvoltageandACcurrent.

•Theswitchmustisolatethetwoinputsourcesfromeachother.Whentheswitchisthrown,theAC

connection to one line must be broken before contacting the other connection. (A common term

for this type of switch is “break-before-make”.

•Theneutrallinesarecommonthroughoutthesystem.Thesameappliestothegroundwires.

•Theelectricalsystemshouldhaveneutralandgroundbondedtogetheratasinglepoint.This

is shown in the lower right corner of the drawing for convenience, but the bonding is usually

performed in the main electrical panel.

•Ifanyotherneutral-groundbondsarepresentinthesystem,particularlyinthegenerator,theymust

be removed.

GRID

GEN

H N G

FX Inverter

Single-Pole

Double-Throw

Switch