How to Connect Solar Panels in Parallel Using KT Solar Y-Lead Connectors

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KT Solar Y-Lead Connectors are available in Male and Female Connections and are commonly used to connect other solar panels in  ‘Parallel’. Y-Leads have many benefits, starting with the ‘Y’ Design. They feature 1 lead with a male or female MC4 Connector on the end. About half way through the lead, it splits into 2 leads which feature a connector on each end (which is usually 2 of the opposite to the other end.

For example;
A Model No. KT70770 Y-Lead features 1 Male MC4 Connector, running to 2 female MC4 Connectors.

A Model No. KT70771 – Y-Lead features 1 Female MC4 Connector, running to 2 Male MC4 Connectors.

Another benefit of Y-Leads is that the connection is basically all done for you to make installation and changing your solar panel over, very simple! All that is required is to connect your Y-Lead to the ‘Fly Leads’ from your solar panels.

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As we have mentioned in the first paragraph, Y-Leads are ideal for connecting solar panels in Parallel.


Definitions of Solar ‘Series and Parallel Connections’

There are two main ways in which you can connect multiple panels for higher power output. These wiring configurations are known as Parallel & Series.

Parallel wiring configuration doubles the Wattage and Amperage but keeps the voltage nominal at 12V. It is very advantageous in Auto/Marine applications particularly to use multiple panels. Parallel Is the most commonly used wiring configuration because when you put two panels together you double the amps when you put 3, you triple and on a large caravan motor home you can place 4 Solar panels and quadruple your amperage but maintain the voltage. This is an exceptionally very good way to do things.

When wiring two panels in series, the Voltage and Wattage Double. (When using two panels of the same Voltage) and Amperage rating remains unchanged.

Connecting Multiple Solar Panels in Parallel refers to 2 Solar Panels of the same Wattage (Imp) being connected  Positive to Positive, Negative to Negative.

Simply put, Parallel is the same as when you are trying to jump-start a car – positive to positive, negative to negative. That is a parallel connection. The nominal voltage remains at 12V.

Connecting Multiple Solar Panels in Series refers to 2 Solar Panels of the same Wattage (Imp) being connected Negative to Positive, Negative to Positive.

A great way to think about Series is the common household torch. The torch has up to 6 x 1.5V batteries all sitting on top of each other but it’s connected negative to positive, negative to positive all the way through then you end up with a load at 9V. (6 x 1.5V = 9V).


KT Y-Leads are available in

Single Retail Packs

Y Lead1
Model No. KT70770 KT Solar Y – Lead Connector – 2 Female MC4 Connections to 1 Male MC4 Connection
Y Lead 2
Model No. KT70771 KT Solar Y – Lead Connector – 2 Male MC4 Connections to 1 Female MC4 Connection
NPR_KT70770_KT70771_KT70772_KT70773_KT70774
Click to Download this KT Data Sheet as PDF

What will I require to install Y-Leads

Seeing as Y-Leads are designed for Parallel Connections, You will require 2 x Y-Leads.
(1 x KT70770 & KT70771) to form a complete parallel solar connection.


How to Correctly install

Y – Lead Connectors

Step 1.

Ensure you have 2 Solar Panels of the Same

Wattage (Wp)

In this example, we will be connecting 2 x 100W KT Solar Panels in Parallel to create a Maximum Power (PMax) of 200Wp and a Maximum Power Current of 10.92A (Imp).

Parallel wiring configuration doubles the Wattage and Amperage but keeps the voltage nominal at 12V.
Here are the Specifications of each of the below panels.

solar panel 100 w specsNote: KT Solar Panels are provided with leads and connectors already – depending on what size solar panel you have purchased, will depend on whether your panel features Fly Leads with MC4 Connectors terminated to the ends, or Alligator Clamps terminated to the ends. Generally Smaller Solar Panels eg; 5W, 10W, 20W & 40W will feature Alligator Clamps and larger Panels eg; 100W, 150W, 160W will feature MC4 Connectors.

Y- Leads will only connect with MC4 Connectors. Follow our easy steps to learn how to install MC4 Connectors to your Solar Panel Leads here.

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Step 2.

To create your ‘Parallel’ Connection, take the Positive Connections (Male) from your Solar Panels and connect these with the KT70770 Y-Lead (Female) Connections.

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Featured Image: Model No. KT70770 – Y-Lead connector

Step 3.

Take the Negative Connection (Female) from your Solar Panel and connect this with the KT70771 Y-Lead (Male) Connections.

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Featured Image: Model No. KT70771 – Y-Lead connector

Step 4.

So far, your connections should look like the below example. 

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Step 5.

Simply connect your 2 Y-Leads together, using the male and female connections as per example below.

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Step 6.

If you are wanting a ‘Series’ connection, instead, simply connect the Positive Lead (+) on your Solar Panel to the Negative (-) on your Solar Panel, and the Negative ( – ) Lead to the Positive (+) on your Second Solar Panel.
When wiring two panels in series, the Voltage and Wattage Double. (When using two panels of the same Voltage) and Amperage rating remains unchanged.

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Should you have any questions about KT Solar Y-Lead Connections and ‘How to Install’ or require any further information, please contact our friendly sales team on 1300 559 953 or submit any inquiries through the below contact form.


© Copyright KT Cable Accessories, All Rights Reserved.
All Imagery within this Post has been photographed by KT Cable Accessories, For KT Cable Accessories. Should you wish to use these images, email marketing@ktcables.com.au to request permissions. Any Instructions mentioned in this Blog Post are only to be used as a guide. KT Cable Accessories accepts no responsibility for damage or injury as a result of following this guide. 

5 most commonly asked questions about Solar

Being at the forefront of the Solar Game, we tend to encounter a barrage of questions about solar. Everything from efficient wiring configurations to how Solar Energy works. We’ve collated the 5 most commonly asked questions about Solar and posted them here for your convenience!

Don’t have time to read? Well then be sure to listen to the accompanying podcast here. 

1. What is PV Solar Energy, and how does it work? 

Solar Panels convert light energy from the sun into a flow of DC electricity this is called the Photovoltaic Effect.

Light leaves the sun as photons. The photons reach Earth and strike the silicon on a solar cell. The electrons in the atoms of the silicon absorb the energy from the photons and move into higher energy orbits.

Solar Panels are comprised of two individually ‘treated’ layers of silicon layered on top of one another. One layer has a higher electron density than the other. Electrons from the higher electron density silicon are captured by the lower electron density layer as they move into their higher energy orbit. If wires (One Positive & One Negative) are attached to each layer connected to devices that run on electricity, completing a circuit, the electrons will flow down those wires and is used as DC Electricity.

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2. What is the difference between Monocrystalline, Polycrystalline & Amorphous Solar Panels?

The main differences between the different types of panels are the molecular structure of the silicon in the cells & the different manufacturing processes. Each manufacturing process creates a cell with a different molecular structure.

Schematic_of_allotropic_forms_of_silcon_horizontal_plain.svg (1)
Image Source: Wikipedia.org


Monocrystalline
 is made from a solid crystalline ingot which is sliced. This creates a single homogenous cell with a continuous crystal lattice, unbroken to its edges. Monocrystalline panels are usually identifiable by a distinctive pattern of small white diamonds and are one solid, consistent colour

Polycrystalline is made from multiple crystallines and silicone which are melted and welded together to form a solar panel. Polycrystalline panels consist of small crystals which present a metal flake looking effect which is visible on the finished solar panel.

Amorphous is a non-crystalline form of cell and has a different manufacturing process. Normally associated with thin film cells. The amorphous panels have an incredible degree of higher radiation. So very much chosen in Northern Australia.

Polycrystalline and monocrystalline have two separate makeups of a footprint. Monocrystalline is the smaller panel with the same efficiency as a Polycrystalline. Polycrystalline is the larger panel with the same efficiency. It’s all about real estate.

Solar Cells
Image Source: Wikipedia.org

3. What Type of Panels do you commonly see in the 12V Marketplace? 

In the 12V Market and also housing, most commonly the Monocrystalline Panel is chosen. In such a short time, the Monocrystalline panel has come such a long way –  commanding 90% of the market. It actually is a very efficient panel with smaller dimensions. For a Polycrystalline Solar Panel to generate an equivalent amount of energy as the Monocrystalline, a Polycrystalline panel will need to be much larger. Monocrystalline a substantially cheaper option and is the most preferred type of solar panel.

4. How are solar panels rated? Are they rated by size or application? and how can we calculate the size & power of the solar panel?

Universally solar panels are rated by Watts, or what we call WP (Watts Power) the wattage is determined by the amps and the voltage of each cell. When they create a panel in size they put together these cells which will give out so much voltage and so many amps. When these two values are multiplied you get Watts. This is the basis of Ohm’s law which governs all electricity on all things DC & AC.

ohms

5. How can you connect multiple panels for more power? 

Yes, there are two main ways in which you can connect multiple panels for higher power output. These wiring configurations are known as Parallel & Series.

Parallel wiring configuration doubles the Wattage and Amperage but keeps the voltage nominal at 12V. It is very advantageous in Automarine applications particularly to use multiple panels. Parallel Is the most commonly used wiring configuration because when you put two panels together you double the amps when you put 3, you triple and on a large caravan motorhome you can place 4 Solar panels and quadruple your amperage but maintain the voltage. This is an exceptionally very good way to do things.

When wiring two panels in series, the Voltage and Wattage Double. (When using two panels of the same Voltage) and Amperage rating remains unchanged.

Simply put, Parallel is the same as when you are trying to jump-start a car – positive to positive, negative to negative. That is a parallel connection. The nominal voltage remains at 12V.

A great way to think about Series is the common household torch. The torch has up to 6 x 1.5V batteries all sitting on top of each other but it’s connected negative to positive, negative to positive all the way through then you end up with a load at 9V. (6 x 1.5V = 9V). This is an example of a series connection.

Current_Connections
Pictured Above: Solar Panels wired in Single, Series & Parallel Configuration.
Image Credit: Grape Solar

So there you have it! Our 5 most commonly asked questions about Solar. If have you any more questions on the topic or have any other blog suggestions, please contact us via the contact form below! Keep your eye out for more Information, Education and Innovation coming your way!

Contact Us

 Celebrate Australia Day, The KT Solar Way!

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 Celebrate Australia Day,
The KT Solar Way!

From the 15th – 31st January, We are giving away a
KT Solar Beach Cricket Set with the purchase of

KT 160 Watt Dual Charging, Folding Solar Kit (KT70711) or
a KT 150 Watt Folding Solar Blanket (KT70712).

T&C’s: One Kit per order, per customer. Only While Stocks Last.
KT Solar Beach Cricket Sets will be sent at end of January.

160W, 12V Dual Charging
Solar Folding Kit

Model No. KT70711

panel
KT has designed the PREMIER of folding solar kits with unique, innovative features, setting it aside from the industry standard.

Designed for those who have a passion for camping, caravaning, off-road adventures, boating, or simply after a reliable & portable solar solution to charge 12V batteries. The KT PREMIER 160 Watt, 12 Volt Dual Charging Solar Folding Kit (Model No. KT70711) is close to a square footprint in size and 2kg lighter than traditional solar kits. With its dual charging capability, you now have the option of charging a single 12V battery or two batteries at once. Choose from 6 battery types. Having this selection ensures the correct charge to your battery, with no fear over overcharging and ensuring your batteries lifespan whilst in desolate environments.

In consideration of the applications, conditions and environments that this kit may endure in its lifetime, we recognise that durability and performance is critical. With this in mind, this kit is designed with a very strong, sturdy leg frame using aluminium extrusion and stainless steel components. Complete with a 3-year warranty on the manufacture and build, a 25-year efficiency guarantee and barcoded for warranty registration recording, this panel is bound to out-perform other industry panels of the same wattage.

• Total weight of 12.76 Kgs – 2Kg Lighter than other 160 Watt Folding Solar Kits
• Close to a square footprint in size
• Ability to charge 2 x 12V batteries simultaneously
• Kit can be regulated or unregulated for battery charge
• Solar Controller connection features a L.E.D 50 Amp heavy duty connector to indicate
when panels are “live”
• 10M Accessory Lead with 50Amp Heavy Duty Connector with In-built Voltmeter
• 500mm Accessory Lead with Positive / Negative Battery Clamps
• 500mm Accessory Lead with 8mm Ring Terminals
• Innovative design, sturdy support frame with cross bars.
• Controller is mounted to the panel leg supports, reducing de-rating
• Protective abs corners, with 2 spare corner protectors included
• 2 x Heavy duty swivel carry handles on adjacent sides
• Heavy duty carry & storage bag with accessory storage compartments


160W, 12V Dual Charging
Solar Folding Kit

Model No. KT7071
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The KT 150 Watt Mono-crystalline Solar Blanket is a compact, light-weight solution to your solar needs. Ideal for camping, 4×4 and marine applications, the KT 150 Watt Portable Solar Blanket is manufactured from a solar cell that is cast from silicon. These cells are more efficient in producing power than most other panels, so the size of the panel is smaller yet produces a greater power output.

This one-piece, easy-fold design folds down to a compact bag with all accessories neatly tucked away inside. The panels feature a scratch-resistant mat coating for durability and folded tabs which allow you to secure the blanket to your vehicle and close the doors over the tab to reduce the chances of theft.

• One-piece easy-fold weather-proof 150 Watt Solar Blanket
• Small, compact design for easy transportation and storage
• Unfolded dimensions: 1820mm x 920mm x 135mm
• Folded dimensions: 400mm x 330mm x 135mm
• 50 Amp Heavy Duty Connector wired to Solar Blanket for easy power connection
• Includes 15 Amp, 12V Solar Charge Controller (waterproof IP65)
• Includes 5M Power Lead with easy connections to power (2.5mm2 Twin Core Cable)
• Includes 55cm Power lead with positive and negative battery clamps for easy
• Connection to the battery (2.5mm2 Twin Core Cable)
• Features securing tab to secure solar blanket to vehicle to prevent theft
• Blanket features loops along the longer edges to allow mounting in various positions
• 2-year warranty

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 For pricing, to place orders or find your nearest Stockist, please contact our friendly sales team through the contact us form below or call us on 1300 559 953

 

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KT SOLAR Product Catalogue Now Available

KT SOLAR IS HERE!
We are excited to announce the release of our New KT SOLAR Product Catalogue!

KT’s New & Innovative range of Solar Panels & Solar Accessories, provides solutions for everyday people and everyday applications.

Designed for boating, caravanning, trucking, golfing, camping, service vehicles and four wheel drives. KT SOLAR has a range of innovative solar solutions to suit your needs, leisure or work!

KT SOLAR Panels offer an industry first 10 year warranty on manufacturing, and a limited 25 year warranty on electrical output with selected panels. Each panel features a unique barcode for warranty registration.

 

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Contact us to request a copy below: