INSTALLATION

DC WIRING

CAUTION: The inverter’s maximum peak current requirements are high. If battery cables are too small and/or connections are loose, efficiency and maximum output power are degraded. Small cables or loose connections may cause dangerous overheating and a fire.

BATTERY CABLE SIZING

The larger the battery cables the better. Undersized cables result in additional stress on the inverter, lower efficiency, reduced surge power and lower peak output voltage. Don’t use cables that are too small and degrade the efficiency that we have worked so hard to achieve and you have paid so much to own.

Also, don’t use cables that are too long - the shorter the better. The lower the DC system voltage, the shorter the cables need to be. If long cables are required, either oversize them substantially, or switch to a higher voltage system, such as 24 Vdc or 48 Vdc. On 12-Vdc system, cables may need to be doubled up (paralleled) to get maximum performance from the inverter.

NOTE: Do not separate the positive and negative cables - taping them together in parallel is best. This reduces the inductance of the wire resulting in a better waveform and reduces the current in the inverter’s filter capacitors. Make the battery cables as short as possible.

Although large cables may seem expensive, spending an additional $100 or more to ensure the performance of your inverter is a wise investment. Using cables that are too small is like putting cheap tires on a high performance sports car - the results will be disappointing.

If the system is expected to operate at the inverter’s continuous power level rating for long periods of time (over an hour), larger disconnects and cables may be required. Most systems do not operate at full capacity for periods exceeding an hour and can operate satisfactorily with the following cable and disconnects shown. If your system includes enormous batteries or has a very large DC source able to continuously power the inverter (such as a hydroelectric plant, etc.) then increasing the disconnect and cable sizes may be required to prevent nuisance tripping of a breaker or blowing of fuses.

The following table gives recommended minimum cable sizes for various cable run lengths and inverter voltages. Use only all copper cables. These recommendations may not meet all local code or NEC requirements.

Table 2, Minimum Recommended Battery Cable Size vs. Cable Length

INVERTER

MODEL

TYPICAL

DC

AMPS1

NEC

1 TO 3 FEET

3 TO 5 FT

AMPS2

ONE WAY

ONE WAY

 

 

 

5 TO 10 FT ONE WAY

SW2512

SW2612E

SW3024E or J

SW4024 or W, K

SW3048E or J

SW4048 or K

SW4548E or A

SW5548

267Amps

278Amps

160Amps

214Amps 80 Amps

107Amps

120Amps

147Amps

334 Amps

#4/0 AWG/107 mm2

348 Amps

#4/0 AWG/107 mm2

201 Amps

#4/0 AWG/107 mm2

267 Amps

#4/0 AWG/107 mm2

100 Amps

#2/0 AWG/67.4 mm2

134 Amps

#2/0 AWG/67.4 mm2

150 Amps

#2/0 AWG/67.4 mm2

184 Amps

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

#2/0 AWG/67.4 mm2

#2/0 AWG/67.4 mm2

#2/0 AWG/67.4 mm2

#4/0 AWG/107 mm2

Not Recommended

Not Recommended

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

#4/0 AWG/107 mm2

1TYPICAL DC AMPS is based on Low Battery Voltage with an efficiency of 85%.

2NEC AMPS is based on Low Battery Voltage, an efficiency of 85%, and a 125% NEC de-rating.

WARNING! Battery cables that are too small will melt and burn the first time the inverter is operated at high power levels.

Page

22

2001 Xantrex Technology, Inc.

Telephone: 360/435-8826

SW Series Inverter/Charger

5916 - 195th Street N. E.

Fax: 360/435-2229

Part No. 2031-5

Arlington, WA 98223

www.traceengineering.com

Rev. C: February 2001

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Xantrex Technology SW Series DC Wiring, Battery Cable Sizing, Inverter Model Typical AMPS1 NEC To 3 Feet, To 5 FT
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SW Series specifications

Xantrex Technology has established itself as a leader in innovative power solutions, and its SW Series inverters epitomizes this commitment to quality and efficiency. Designed for both standalone and grid-tied applications, the SW Series offers versatile power management for a range of residential and commercial needs.

At the heart of the SW Series is its advanced pure sine wave output, ensuring clean and reliable electricity suitable for sensitive electronics. This feature makes it an excellent choice for applications such as solar energy systems, where it provides high-quality power for a variety of devices, from household appliances to complex machinery.

One of the key characteristics of the SW Series is its modular design, which allows for easy installation and scalability. This modularity enables users to expand their power system as their energy needs grow, making it an ideal choice for both small and large installations. The inverters come equipped with a user-friendly interface, providing clear information on system performance, battery status, and more, ensuring that users can effectively monitor and manage their energy consumption.

The SW Series inverters also incorporate cutting-edge technology, such as the patented Power Factor Correction (PFC) feature, which optimizes energy efficiency by reducing harmonic distortion. This translates into less wasted electricity and lower energy costs, making it an environmentally friendly option for users looking to reduce their carbon footprint.

Another notable feature of the SW Series is its ability to operate in extreme conditions. Built with robust components and advanced thermal management systems, these inverters can withstand a wide range of temperatures and environmental challenges, ensuring reliable performance in various settings. This durability makes them suitable for off-grid applications, including remote cabins, RVs, and boats.

Furthermore, the SW Series supports a variety of battery types, including lithium-ion, AGM, and gel batteries, offering flexibility for users to choose the best energy storage solution for their needs. The sophisticated battery management system ensures optimal charging and discharging, prolonging the lifespan of the batteries and enhancing the overall efficiency of the power system.

In summary, Xantrex Technology's SW Series inverters stand out for their pure sine wave output, modular design, energy efficiency features, and robust performance in challenging conditions. With their versatility and advanced technology, they cater to the evolving needs of today’s power consumers, making them a compelling choice in the modern energy landscape.
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