PV Solar 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

The maximum DC voltage has to be limited for safety reasons, NEC regulations, and to match the technical specifications for a string inverter. The limit for residential PV systems is 600V for NEC regulations, but this can vary depending on the centralized inverter.

Minimum DC Input Voltage

There is a required minimum DC input voltage to start up a string inverter, which is why this is an important planning configuration for PV systems. This number drastically varies according to the selected model and brand.

Maximum DC Input Current

The maximum DC input current is limited by the technical specifications of the inverter. This value is designed after the current-voltage curve (IV-Curve) for a solar cell. This is an important factor to be considered when wiring solar panels as the system DC output should not exceed the maximum input current for the inverter.

Number of MPPT Trackers

MPPT trackers optimize power output for PV systems considering the IV-Curve. Centralized inverters with several MPPT trackers can optimize power output for solar panel strings featuring different specifications from one another, allowing you to wire a more complex solar array to the inverter. If your inverter has two or more MPPT inputs, make sure to take advantage of them properly, especially in scenarios with multiple orientations or shading impact.

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 come with pre-installed MC4 connectors, which will allow you to interlock solar panels between them. For the ending points of the system, you may be able to use an MC4 extension cable that generally comes in multiple sizes to interconnect the PV system and the inverter.

However, it is still important to learn how to properly install a PV connector, since in some cases or sections, the system may require you to make the connection yourself. This will probably occur if you do not find an MC4 extension cable with the right length.

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

Strip the wire.

Place the connecting plate on it and use the crimping tool.

Insert the lower components of the connector (terminal cover, strain reliever, and compression sleeve).

Insert the upper components (safety foil, male/female MC4 connector housing, O-ring).

Attach all the components together and slightly tighten them by hand.

Give the final torque to the MC4 connector by using the solar connector assembly tool.

DAYA PV SOLAR CABLE Details

DAYA PV SOLAR CABLE Working conditions

PV Advantages

PV modules operate at high temperatures and are exposed to a variety of environmental conditions. The NEC limits various PV array applications to USE-2 or PV wire. These cables need to meet the required sunlight resistance and temperature ratings for the environment.

PV wires are manufactured for use in photovoltaic applications, while USE-2 cable types are typically manufactured for underground service entrance applications. Both cable types commonly contain XLPE insulation and can be sunlight resistant and/or rated for direct burial.

PV wire is set apart from USE-2 wire in terms of insulation thickness, voltage ratings and operating temperatures. PV wire contains thicker insulations suitable for protection against various harsh environments. USE-2 is rated up to 600 V, while PV wire is available in three voltage ratings: 600 V, 1 kV, and 2 kV. USE-2 cable types’ maximum cable operating temperature is 90ºC, while PV wire can be rated to higher temperatures.

PV wire is one of the few single-conductor wire types that can be rated over 600 V and be direct buried per the NEC without needing to be shielded.

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 PV SOLAR CABLE Parameter (Specification)

DAYA PV SOLAR 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 PV SOLAR 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.