Solar Panel Cable

Planning the best solar array configuration for your PV system

Planning the solar array configuration will help you ensure the right voltage/current output for your PV system. In this section, we explain what these items are and their importance.

Maximum DC Input Voltage

For the sake of safety, adherence to NEC regulations, and compatibility with the technical specifications of a string inverter, it is essential to set a maximum limit on the DC voltage. While the NEC regulations set a 600V limit for residential PV systems, this threshold can differ depending on the specific centralized inverter being used.

On the other hand, a string inverter has a specific minimum DC input voltage requirement for it to start functioning, which is a crucial factor to consider during the planning and configuration of PV systems. This minimum voltage can vary significantly based on the model and brand of the inverter chosen.

Maximum DC Input Current

The technical specifications of the inverter impose a limitation on the maximum DC input current. This limitation is determined based on the current-voltage curve (IV-Curve) of a solar cell. When wiring solar panels, it's crucial to take this into account, ensuring that the system's DC output does not exceed the inverter's maximum input current limit.

Number of MPPT Trackers

MPPT trackers play a vital role in maximizing power output for PV systems by analyzing the IV-Curve. Centralized inverters equipped with multiple MPPT trackers are capable of optimizing power generation for solar panel strings that may have differing specifications, enabling the connection of more complex solar arrays to the inverter. If your inverter boasts two or more MPPT inputs, it's crucial to utilize them effectively, particularly in scenarios involving multiple panel orientations or shading issues.

Wiring your solar panel array: Step-by-step guide

Up to this point, you learned about the key concepts and planning aspects to consider before wiring solar panels. Now, in this section, we provide you with a step-by-step guide on how to wire solar panels.

Connecting a PV connector to your PV wire

Most solar panels are equipped with pre-installed MC4 connectors, facilitating the interconnection between panels. For the system's endpoints, you can utilize MC4 extension cables, which are available in various lengths, to link the PV system to the inverter.

However, understanding how to install a PV connector correctly is still crucial. There may be instances or sections where you'll need to make the connection manually, typically when an MC4 extension cable of the desired length is not available.

The steps to add solar connectors to PV wires are the following:

Strip the outer insulation from the wire to expose the inner conductors.

Position the connecting plate on the stripped wire and use a crimping tool to securely attach it.

Begin by inserting the lower components of the connector, which typically include the terminal cover, strain reliever, and compression sleeve. Ensure they are properly aligned and seated.

Next, insert the upper components, which comprise the safety foil, male or female MC4 connector housing, and the O-ring. Ensure these parts are also correctly aligned.

Gently assemble all the components together and tighten them by hand to a moderate degree. Do not overtighten initially.

Finally, use a solar connector assembly tool to apply the final torque to the MC4 connector, ensuring a secure and reliable connection.

DAYA Solar Panel Cable Details

DAYA Solar Panel Cable Working conditions

PV Advantages

PV modules function under high temperatures and diverse environmental conditions. As per NEC guidelines, certain PV array applications must utilize USE-2 or PV wire, both of which must meet specific sunlight resistance and temperature ratings suitable for the installation environment.

PV wires are specifically designed for photovoltaic applications, while USE-2 cables are typically intended for underground service entrance uses. Both cable types commonly incorporate XLPE insulation and can be sunlight-resistant or suitable for direct burial.

However, PV wire differs from USE-2 wire in terms of insulation thickness, voltage ratings, and operating temperatures. PV wire boasts thicker insulation layers, making it suitable for protection against harsh environments. USE-2 cables are rated up to 600 V, whereas PV wire is available in three voltage ratings: 600 V, 1 kV, and 2 kV. Additionally, USE-2 cables have a maximum operating temperature of 90ºC, whereas PV wire can be rated for higher temperatures.

Notably, PV wire is one of the few single-conductor wire types that can be rated above 600 V and can be directly buried in accordance with NEC standards, without the need for additional shielding.

Packing:

--100m/Coil with Shrinking Film Wrap, 6 Coils per outer carton.

--100m/Spool, spool can be Paper, Plastic, or ABS, then 3-4 spools per carton,

--200m or 250m per Drum, two drums per carton,

--305m/Wooden Drum, one drum per outer carton or pallet loading,

--500m/Wooden Drum, one drum per outer carton or pallet loading,

--1000m or 3000m wooden drum, then pallet loading.

*We can also offer customized OEM packing according to clients' request.

Delivery:

Port: Tianjin, or other ports as per your requirements.

Sea freight: FOB/C&F/CIF quotation are all available.

*For some countries such as Africa countries, middle east countries, our sea freight quotation is much cheaper than clients get from local shipping agency.

DAYA Solar Panel Cable Parameter (Specification)

DAYA Solar Panel Cable Service

Pre-sales

We provide technical support and complete power distribution solutions tailored to your needs. If the design drawings you provide are deemed unfeasible, we will optimize the plan and adjust it with the dimensions of the cabinet, the location of the equipment, and so on. We will also optimize the configuration of the products to make them meet your requirements.

After-Sales

If any problem occurs, we will first provide support by phone or email. We will perform a remote debug if necessary. Furthermore, our products come with a troubleshooting manual for reference when trying to find the fault and solve issues by yourself. Most problems can be solved by the above-mentioned methods. We will check in every year or so to acquire detailed information about your equipment to get a better understanding of the inner workings.

Our customer service promise

1. We will quickly solve the problem after receiving the issue report or repair request.

2. We then explain the cause of failure in detail and any fees will be charged according to market pricing.

3. If we take any parts back for inspecting, we will apply fragile notice stickers on them or write their serial number down to maintain the safety of the parts.

4. If your complaint is deemed valid, we will refund repair fees to you on-site.

DAYA Solar Panel Cable FAQ

1.Q: Are you a manufacturer or trader?

A:We are all, Main business of the company low-voltage switchgear, power distribution cabinet, explosion-proof cabinet design, production and system programming.

2.Q: Whether to support OEM/ODM?Can you design the equipment according to our size?

A: Of course, we can customize any product according to customer requirements, and we can provide design solutions and solutions.

3.Q: Why should I buy from you instead of someone else?

A: First of all, we can provide all customers with very professional support consisting of IT consultants and service teams.Secondly, our main engineers have more than 20 years of experience in power distribution equipment development.

4.Q:What about the delivery time?

A:Generally, our delivery time is around 7-15 days about. While, it depends on the requirement of customers and the

quantity of products.

5.Q:What about the shipment?

A:We can arrange shipment by DHL, FedEx, UPS,etc.of course, customers can also use their own freight forwarders.

6.Q:How about the terms of payment?

A:Supported T/T、Paypal、Apple Pay、Google Pay、Western Union,etc. Of course we can discuss on this.