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Charger Cables 6AWG, 72 Inches, Pair, Ring Terminals AltE 6AWG 72" Charger Cables ALTCC-6AWG-72RB Charger Cables 6AWG, 72 Inches, Pair, Ring Terminals I think it is quite likely only Victron use that naming convention where instead of Watts, they are VAs (Volt-Amps) and around 1.2x the nominal wattage (confusing as when someone quotes Ohms Law at you, they will tell you "Watts = Volts x Amps" (so why the hell is a VA not the same as a Watt, you could legitimately ask!). So we want to select a cable to make sure that the voltage drop is not so large that it will cause problems, but what is acceptable and how do we calculate the right cable size to use? Well the generally acceptable voltage drop for DC circuits is around 3-4% and we can use V = IR (see Electrical Circuit Basics) to calculate the voltage drop for a cable if we know the current draw of the load and the cable's resistance per metre. Lithium leisure batteries are typically around 50% smaller and lighter than their AGM counterparts, but they are also around 4x more expensive. Lithium leisure batteries also have a much longer lifespan, but you may find that the lifespan of AGM batteries is perfectly adequate for your usage.
In North America the AWG standard is most commonly used for stranded cable and expresses the Gauge together with the number of strands and their Gauge. For example, a cable specified as 16 AWG 7/24 has a size of 16AWG and is made up of 7 individual strands, each of 24 AWG. It has sufficient current rating for the expected load in the circuit, including a margin of safety.
We only stock batteries we would use in our own electrical system.
Your inverter manual might offer other suggestions on how to offset the issues with lengthy cables. Follow whatever suggestions the manufacturer recommends. Why Inverter and Battery Cable Distance Matters All elements of an electrical circuit have resistance, including electrical cable, which means that there will be energy loss in the form of voltage drop experienced along the length of the cable. Just as a bulb converts electrical energy into heat and light due to its resistance, and so induces a voltage drop, a copper conductor has resistance and will convert some of the energy it conducts, causing a voltage drop in the same way. The difference is that voltage drop across a bulb (or other load) is useful as that's what makes it work, but voltage drop along cable and other passive parts of a circuit is not desirable as it's not a useful conversion of energy. Heat is a byproduct of energy transfer and the cable will produce heat as it transports energy. The cable rating will include a thermal limit, the amount of heat the cable can safely dissipate. Chinese Cable feels much stiffer and you can put it into a position and it will stay when let go and not relax and drop down. Here is a cable supplied with an Inverter doing an impersonation of a snake-charmers prop ....
Expressed as the number of conductors of a given diameter. So 28/0.30 means that there are 28 strands, each with a diameter of 0.30mm The sizing gauges can vary depending on what you look at, but there are a few factors to consider and ampacity (current carrying capability) is just one of them. Voltage drop can be very important depending on the device (for an Inverter, it is far more important IMO than when specing up a B2B, for example) and heat (=wasted energy) is a key factor, as is efficiency. In the example, we’ll use 5m of 0.5mm 2 cable with a resistance of 0.037 Ω/m, which is typical resistance for a cable of this type. In most situations the detrimental effects can be minimised by using shrink sleeving, sealed connectors, adhesive lined terminals, protective gels etc. to keep moisture out, but in some applications where the environment is particularly aggressive, for example marine use, it might be preferable to use cable with tinned conductors. This is simply where the standard plain copper conductor has has a layer of tin applied before being sheathed in the insulation.Tin doesn't react in the presence of moisture, yet retains good conductivity, and so improves long-term performance of the cable. The downsides are that it is slightly more expensive and there is a more limited range of sizes and colours available compared with plain copper. Earth braid straps that have no insulating layer are typically tinned for protection as a matter of course.Knowing the right cable size for inverters is essential to get the best possible performance from your system. The cable wires are responsible for transferring power from the battery to the inverter, so having the right size is a must. If the wires are too small, the inverter might not run at all. This shows that although 0.5mm² cable is OK for the expected current draw of the light, it's not OK for the cable run length as the drop is greater than 3%. To work out what size inverter you need, simply add together the maximum wattage of each 230V appliances you want to use in your campervan.
It may not be the most interesting or fascinating thing to do, it matters that you choose the right cable choice for the power inverter that you have decided to use for whatever purpose. The size corresponds to the wattage rating of inverters.The cable sizes for the inverter and battery are not necessarily the same as those for the solar panel and battery. Refer to the proper documentation or owner’s manual for the recommended wire gauge and lengths. How to Calculate Inverter Wire Size Requirements If in doubt, going up a cable size is usually safe as long as it’s economically viable. Voltage drop The units that are used to identify power inverter cables is in AWG, or the american wire gauge, which has been used in North America since 1857, and has since been the standard measurement for solid, nonferrous, round, and electrically conducting wires. Below are the typical sizes for power inverter cables
However you should never go one size smaller. The worst thing you can do is use a long, thin wire as it will generate heavy resistance and adversely affect system performance. if you need a 4 AWG wire, we recommend the Spartan Power Cable Set because they work with these inverters. My approach would be to get an inverter large enough to run whatever single item you want to use (and a battery bank large enough to power that inverter).By planning the installation ahead of time, you can determine where the inverter and batteries have to be so they can be as close to each other as possible. Doing this will reduce the amount of time required to configure the cables so they are in the right position. Conclusion When I had around a metre total length between inverter ( Victron Multiplus 12/3000) and Battery Bank, I ended up, after some changes (which will come on to) with the battery interconnect cables (the ones that go +ve to +ve and -ve to -ve within the bank) being 50mm2, and the Tap Off from the battery bank to the Inverter to be 70mm2. One thing to bear in mind when specifying solar cable is voltage drop. This is how much voltage you lose through the length of the cable. Charger Cables 6AWG, 60 Inches, Pair, Ring/Ferrule AltE 6AWG 60" Charger Cables ALTCC-6AWG-60RB Charger Cables 6AWG, 60 Inches, Pair, Ring/Ferrule
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