Generac 00941-3 2.7BATTERY INSTALLATION, Sensing Harness, Recommended Battery, Battery Cables

Section 2 – Installation

IMPACT-36 plus II Recreational Vehicle Generator

◆2.6.6 SENSING HARNESS

A sensing harness has been provided with the gener- ator to connect to the inverter (Figure 2.22). It is 12 feet long, however, it is also available in a 24 foot length: Model # 04612-0. The four (4) DC power wires (Red, Blue Black, and Green) may be cut to the desired length to meet the installation (see Figure 2.22).

DO NOT in any way cut or shorten the

!sensing harness. If the harness is too long, simply tie the excess up neatly with standard cable ties.

2.7BATTERY INSTALLATION

◆2.7.1 RECOMMENDED BATTERY

Install a battery that meets the following require- ments:

•Battery must be a 12 volt, automotive type storage battery.

•For prevailing ambient temperatures above 32°F (0°C), use a battery rated 70 amp-hours and capa- ble of delivering 400 cold cranking amperes.

•For prevailing ambient temperatures below 32°F (0°C), use a battery rated 95 amp-hours and capa- ble of delivering 450 cold cranking amperes.

IMPORTANT: IF THE BATTERY IS TO BE USED TO POWER OTHER VEHICLE ACCESSORIES, AS WELL AS START THE GENERATOR, A BATTERY WITH A LARGER CAPACITY MAY BE NEEDED.

◆2.7.2 BATTERY CABLES

Using battery cables that are too long or too small in diameter may cause a drop in voltage which causes starting problems. For best cold weather starting, the voltage drop between battery terminals and the gen- erator connection point should not exceed 0.12 volts per 100 amperes of cranking current.

Select battery cables based on (a) cable length, and

(b)prevailing ambient temperatures. Generally, the longer the cable and the colder the weather, the larg- er the cable size must be as shown in the following chart.

Figure 2.22 — Generator to Inverter Connection

RED

BLACK

BLUE

GREEN

J-BOX - GENERATOR

TO INVERTER INPUT

Generac® Power Systems, Inc. 31