![\"\"](\"http:\/\/we-digitize.io\/wp-content\/uploads\/2026\/04\/1-300x162.png\")
Whether in company parking lots, underground garages, or public parking areas, it is often necessary to install a large number of charging points side by side or in a row. This presents a key challenge: How can the electrical connections be designed as efficiently as possible?<\/p>\n
There are basically two ways to connect charging stations to the power supply.<\/p>\n
The first option is to use a separate power supply line for each charging station. With this type of connection, each charging station is connected to the power grid via its own supply line. This solution is technically straightforward but costly, as it requires the most extensive cabling. For example: For six parking spaces with a width of The second option is a daisy-chain configuration. Alternatively, a single power line can be used to supply all charging stations in sequence. In this setup, each station is connected in parallel to the line (Fig. 2). This configuration reduces the total cable length in the above example to about 15 m. However, due to the higher current load, the cable cross-section must be significantly larger\u2014up to twenty times larger in the example given. This leads to high material costs, even though the large cross-section is only needed up to the first charging station (Fig. 3) and then decreases linearly to the last charging station. A significant portion of the expensive cable capacity thus remains unused.<\/p>\n Another drawback of this traditional loop-through technique is that the charging stations must be equipped with correspondingly large connection terminals. Not only do these increase production costs, but they also do not operate at full capacity throughout the production line. While it would be technically possible to customize the terminals for each station, this would not be economically feasible.<\/p>\n Although a theoretically ideal, concentric power distribution structure (Fig. 4) would save space, it is neither feasible in practice nor does it comply with VDE, CENELEC, and IEC standards regarding circuit protection. Some manufacturers rely on busbar solutions in the charging station to power multiple charging stations in a group.<\/p>\n <\/p>\n <\/p>\n As in so many other areas, we\u2019re taking a different approach. Based on a standard busbar, a 22 kW AC charging station (W+A 22 kW AC #embed) integrated into the junction box has been developed and has already been certified by the PTB. It can be connected to the busbar with a simple click.<\/p>\n With our scalable busbar technology (400 A - 6,300 A), we.digitize is currently the only manufacturer capable of looping through up to 25 (12) - 400 (200) charging stations at 16 (32) A AC each without any cross-sectional limitations. Once a project is completed, the busbar solution can be visualized in reality as shown in Figure 5.<\/p>\n But how exactly does this technology work, and why is it so important for expanding the charging infrastructure? To understand that, we first need to clarify what loop-through does.<\/p>\n The term \u201cloop-through\u201d originally comes from electrical engineering and describes the principle of running a cable from one connection point to the next. In other words, the cable runs \u201cthrough\u201d several devices or junction boxes without requiring a completely new cable to be laid each time.<\/p>\n In the traditional approach, the cable is cut at each connection point so that the conductors can be connected in a terminal block. This process is time-consuming and carries the risk of installation errors, such as rough cuts or loose connections.<\/p>\n When looping through a busbar as a substitute for the supply cable, universal standard terminal and plug connections eliminate the time-consuming work described above. This not only makes installation faster and more organized, but also safer, as it reduces the number of potential sources of error.<\/p>\n Our patented LiveCharger busbar solution eliminates the typical limitations of cable-based installations.<\/p>\n With conventional systems, the amount of cabling required increases significantly with each additional charging station. This not only leads to high material and installation costs, but also to cluttered and space-intensive setups.<\/p>\n A major technical bottleneck is that the size of the connection terminals in charging stations is limited by the cross-sectional area of the cables.<\/p>\n Our busbar solution fundamentally solves this problem. Inside the busbar are conductive plates that are designed with different dimensions depending on the current demand (Fig. 6). This allows the cross-section to be increased as needed through a very simple design factor, while maintaining the basic geometry for easy installation.<\/p>\n That is why our system offers the distinct advantage of exceptional scalability. While traditional cable solutions are technically limited by the permissible cross-sectional area and maximum current, the LiveCharger busbar solution can be flexibly adjusted between 400 A and 6,300 A. This can be achieved by modifying the busbar in just one dimension, as mentioned above.<\/p>\n In addition, our system offers maximum compatibility. Using a custom-developed adapter box, any type of charging station can be connected to the power rail. The adapter box acts as an interface between the rail and the charging station, allowing virtually any AC charging station to be integrated, regardless of manufacturer or cable class.<\/p>\n So when is a busbar system a good choice?<\/p>\n For smaller installations with up to two or three charging stations, the conventional cabling solution using the standard loop-through method is sufficient.<\/p>\n However, as soon as a large number of charging points are planned, or if future expansion is anticipated, it makes sense to consider a busbar solution. It is more compact, cost-effective, and scalable, and offers virtually unlimited power and capacity.<\/p>\n Let\u2019s summarize all the technical advantages of the busbar solution. This method combines ease of use with high operational reliability. First, there is reduced cabling effort, as fewer cable cuts and connection points mean less material consumption and result in a significantly more streamlined installation. This results in a more professional-looking end result, as the cabling remains neat and organized, which also makes maintenance easier. Additionally, there are time savings during installation, since cables do not need to be cut and prepared multiple times. Furthermore, the risk of errors is minimized, as every connection point is a potential weak spot.<\/p>\n Furthermore, this method results in significant space optimization, as fewer connectors and interfaces create more free space in enclosures, distribution boxes, and charging points. Another advantage is easy scalability, as additional charging points can be added without the need for major modifications to the existing cabling. There is also the advantage that you are not limited in the number of charging stations from the outset. Furthermore, the lifespan of the installation is extended, as fewer technical interventions on the cable ensure greater robustness and reliability over many years.<\/p>\n The busbar solution is a practical and highly effective way to make charging infrastructure more efficient, safer, and future-proof. The busbar system, including the adapter box, not only significantly reduces installation effort, material requirements, and potential sources of error, but also allows for complete flexibility in designing the charging infrastructure. At the same time, it provides a clean, space-saving solution that can be easily expanded as needed.<\/p>\n This technology is a key component, particularly in the context of the rapid expansion of electric mobility. It helps operators, installation companies, and planners to set up charging stations cost-effectively and operate them reliably over the long term.<\/p>\n As the number of electric vehicles grows and charging infrastructure becomes increasingly complex, the importance of such practical solutions will continue to rise. Our busbar solution demonstrates that efficiency and future-proofing often begin with the finer details of the installation.<\/p>\n The projects we have completed using our power rail system once again demonstrate our expertise in this field. We have been using our LiveCharger solution for several years now, and both we and our customers are very satisfied with the results. If you are interested in seeing more projects we have carried out using this technology, please visit our website at Projects<\/em><\/a> . Of course, we\u2019re here to offer you advice and support for your next electric mobility project. Thank you for taking the time to read our article.<\/p>\n You can gain further insights into our projects on our social media channels\u00a0Instagram\u00a0<\/a>and\u00a0LinkedIn\u00a0<\/a>.<\/p>\n Stay tuned!<\/p>","protected":false},"excerpt":{"rendered":" Herzlich willkommen zur\u00fcck auf dem Blog von we.digitize! Hier informieren wir Sie regelm\u00e4\u00dfig \u00fcber aktuelle Entwicklungen und geben Einblicke in spannende Themen rund um unser Unternehmen und die Branche. In diesem Beitrag besch\u00e4ftigen wir uns mit der M\u00f6glichkeit des flexiblen Durchschleifens der Ladestationen ohne die typische Anschluss- bzw. Kabelquerschnittsbegrenzung. Die Elektromobilit\u00e4t w\u00e4chst rasant und mit […]<\/p>\n","protected":false},"author":5,"featured_media":2434,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2424","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/posts\/2424","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/comments?post=2424"}],"version-history":[{"count":2,"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/posts\/2424\/revisions"}],"predecessor-version":[{"id":2433,"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/posts\/2424\/revisions\/2433"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/media\/2434"}],"wp:attachment":[{"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/media?parent=2424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/categories?post=2424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/we-digitize.io\/en\/wp-json\/wp\/v2\/tags?post=2424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n2.50 m each, approximately 50 m of power line is required.<\/p>\n![\"\"](\"http:\/\/we-digitize.io\/wp-content\/uploads\/2026\/04\/2-300x145.png\")
![\"\"](\"http:\/\/we-digitize.io\/wp-content\/uploads\/2026\/04\/3-300x175.png\")
![\"\"](\"http:\/\/we-digitize.io\/wp-content\/uploads\/2026\/04\/4-300x160.png\")
\nWe\u2019re already replacing the power cable with a compact busbar system that also serves as a mounting bracket for the charging stations.<\/p>\n![\"\"](\"http:\/\/we-digitize.io\/wp-content\/uploads\/2026\/04\/5-1-300x225.jpg\")
What does \u201cloop-through\u201d mean?<\/h3>\n
![\"\"](\"http:\/\/we-digitize.io\/wp-content\/uploads\/2026\/04\/6.png\")
Technical Advantages at a Glance<\/h3>\n
Conclusion and Outlook<\/h3>\n