Tripp Lite EMS Series owner manual Battery Connection, Vehicular

Front-Mounted DC

Connectors

(EMS2012UL only)

Rear-Mounted DC Conn- ectors (EMS1250UL only)

Battery Connection

Connect your Inverter/Charger to your batteries using the following procedures:

•Connect DC Wiring: Though your Inverter/Charger is a high-efficiency con- verter of electricity,

its rated output

capacity is limited by the length and

gauge of the cabling running from the battery to the unit. Use the shortest length and largest diameter cabling (maximum

2/0 gauge) to fit your Inverter/ Charger's DC input

terminals. Shorter and heavier-gauge

cabling reduces DC voltage drop and allows for maximum transfer of current. Your

Inverter/ Charger is capable of delivering peak wattage at up to 200% of its rated con- tinuous wattage output for brief periods of time. See your unit's Specifications Sheet for details. Heavier-gauge cabling should be used when continuously operating heavy draw equipment under these conditions. For EMS1250UL and EMS2012UL, tighten your Inverter/ Charger and battery terminals to approximately 3.5 Newton-meters of torque to create an efficient connection and to prevent excessive heating at this connec- tion. Model EMS1012 comes with two Quick Connectors, one prewired to the unit and one in the box, for use with user-sup- plied cables. Insufficient tightening of the terminals could void your warranty. See the Minimum Recommended Cable Sizing Chart on your unit's Specifications Sheet.

•Connect Ground: Using a #8 AWG wire or larger directly connect the Main Ground Lug to the vehicle's chassis or earth ground. See the Feature Identification section, page 3, to locate the Main Ground Lug on your specific Inverter/Charger model. All instal- lations must comply with national and local codes and ordinances.

•Connect Fuse: NEC article 551 requires that you connect your Inverter/Charger's positive DC Terminal directly to a UL-listed fuse and fuse block within 18 inches of the battery. The fuse's rating must equal or exceed the Minimum DC Fuse Rating listed for your Inverter/Charger. See your unit's Specifications Sheet for fuse requirements. See diagrams below for proper fuse placement.

WARNING! • Failure to properly ground your Inverter/Charger to the vehicle’s chassis or earth ground may result in a lethal electrical shock hazard.

•Never attempt to operate your Inverter/Charger by connecting it directly to output from an alternator rather than a battery or battery bank.

Vehicular

Your Inverter/Charger’s Nominal DC Input Voltage must match the voltage of your battery or batteries—12 Volts in most vehicular applications.

Although it is possible to connect your Inverter/Charger to the main battery within your vehicle’s electrical system, in the normal vehicular context, the Inverter/Charger will be connected to one or more dedicated auxiliary (house) batteries which are isolated from the drive system to prevent possible draining of the main battery.

7

3

2

1

12 Volts

		EMS1012UL Inverter/Chargers feature two
12 Volts		Quick Connectors (one wired to the unit and one
	5	included in the box) for use with user-supplied
		cables. EMS1250UL and EMS2012UL use direct
		DC battery connection, illustrated at the top of
12 Volt Main Battery Connection		the page.

12 Volt Inverter/Charger

1

12 Volts

6

4

2

12 Volts

2

12 Volts

7

12 Volt Inverter/Charger

5

EMS1012UL Inverter/Chargers feature two Quick Connectors (one wired to the unit and one included in the box) for use with user-supplied

3 cables. EMS1250UL and EMS2012UL use direct DC battery connection, illustrated at the

top of the page.

12 Volt Main and Auxiliary (House) Battery Connection (Isolated Parallel)

	1	12 Volt Alternator	2	Vehicle Battery Ground			3		12 Volt Main Battery		4	12 Volt Auxiliary (House) Battery	5	UL-Listed Fuse & Fuse Block (mounted
within 18 inches of the battery)					6	Battery Isolator		7	Large Diameter Cabling, Maximum(2/0) Gauge to Fit Terminals
										9E