Voltage drop or ‘volt drop’ happens in all kinds of electrical installations. When larger power cables are installed more complicated calculations has to be made to counteract the problem. However when LED power supply or tapes are concerned there are a few simple guidelines to follow.

Volt drop in LED strips happens when the LEDs are positioned very far from the source of energy or when longer individual runs (or lines) are attempted. This takes place because inadequate power or electrical current reaches the LEDs, as it has further to travel. This leads to the voltage to decline or drop right at the end in the run.

Voltage drops out approximately .6V every metre and is also less noticeable with 24V strips. When utilizing 12V strips, a 2-3V drop over a 5 metre run would decrease the voltage by 25% subsequently reducing the lumen (brightness) by way of a similar percentage.

Volt drop might be compared to a person climbing a mountain, the greater the altitude, the thinner the oxygen becomes and also the less the person can breathe.

The LEDs at the start of the fishing line will appear bright at 100% output nevertheless the LEDs towards the end in the line will begin to fade. The brightness will reduce exponentially; the further away it gets out of the source of energy. Potentially the light output might be reduced to % if greater distances were incorrectly attempted and cause permanent damage to the LEDs.

Volt drop in single colour strips are barley noticeable, especially in shorter lengths. Colour changing strips tend to be more visible when you turn the color to white. If you have inadequate voltage right at the end of the strip the clear white colour will turn pink towards the end of the line. This is because white colour is mixed from red, green and blue (RGB). However, the red requires less voltage than green and blue. When the strip is way from the power source, green and blue don’t get enough voltage and turn into weaker, whilst the red colour gets to be more prominent and turns white into pink.

The higher the wattage in the LED strip, the short the run ought to be. For example; 30 LED (7.2W) per metre strip can have a maximum run of 10 metres, compared to the 60 LED (14.4W) per metre strip which may have a maximum run of 5 metres.

This does not mean you can’t install longer runs of LED strip, it merely means that you need to take a different approach. Single colour strips and colour changing (called RGB) strips will vary because colour changing LEDA driver 12v have to be controlled from one controller. Using a higher rated power source fails to repair the problem because the current continues to have to pass through a long collection of LEDs and resistors, every one draining small amounts of power.

Single colour strips should be wired directly returning to the ability supply in 5 metre of 10 metre runs depending on the version of strip i.e. 30 or 60 LED that is utilized. Each run will likely be powered directly from the ability supply and will be turned on or off by switching a switch or unplugging it through the mains. The power supply is usually wired to some light switch but tend to be controlled by various types of controllers. The strips may then be positioned nevertheless you like, in a single long line or in a rectangle shape for instance. After the strips are positioned next to one another the sunshine can look seamless, such as a fluorescent tube. The run may be over 100 metres hapmys length provided that the energy supply was rated appropriately.

Volt drop will occur slightly in the connecting power cables but since there are no LEDs or resisters etc draining the existing, the volt drop will likely be barley noticeable. Thicker cables may be used to reach further distances.

For longer runs of colour changing strip, you have to fit amplifiers every 5 or 10 metres. Amplifiers allow the strips to be powered indirectly from the power supply but also permit the signal from your controller to pass through with the entire run of strips. This way once you turn the color to red for instance, everything turns to red simultaneously. The amplifiers power the strip, the power supply powers the amplifiers. Amplifiers could even be powered off their own separate power supply and you could have as much power supplies as you like on the same run. The power supplies could be positioned even closer to the LED strip connection or wherever is most accessible.

For extended, more complicated runs we could supply our customers with their own easy to understand wiring diagram. The diagram illustrates just how the power source, strips and cables are connected together. As part for our LED Strip Fit brand, LED dimmable driver may be supplied for the exact lengths required; everything apart from the larger hard wired power supplies can be connected to each, requiring no tools or electrical knowledge.

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