FAQs

NPDesign engineers and delivers EBOS infrastructure for utility-scale solar projects, with a strong focus on Solar IPC trunk bus systems, connectors, engineering support, and project-specific kitting and logistics.

NPDesign states that it was founded in 2010 and has over 15 years of experience serving the solar EBOS market.

NPDesign focuses on utility-scale solar and large photovoltaic developments across North America, with over 2 GW of deployed IPC capacity.

NPDesign positions itself as more than a component supplier by offering engineering consultation, IPC sizing, trunk bus design, installation guidance, project-specific kitting, and logistics support.

NPDesign specializes exclusively in Solar IPC trunk bus systems for utility-scale solar applications.

Yes. NPDesign’s IPC connector lineup is UL 9703 certified and listed, which is a major part of its product positioning for photovoltaic applications.

UL 9703 is a photovoltaic connector standard that supports safety, inspection confidence, and project compliance. Using listed components can also help give developers, EPCs, and contractors more confidence in the connection system being installed.

UL 9703 is tailored specifically to photovoltaic and distributed generation wiring applications, with more aggressive testing for solar use conditions. That makes it a stronger fit for solar EBOS connections than a broader general-purpose connector standard.

Yes. NPDesign highlights more than 2 GW of deployed IPC capacity, along with years of field use on utility-scale solar projects. That gives the product line a strong field-proven track record.

NPDesign systems are positioned around certified connector performance, field-proven deployment, and installation features like sealed connections and shear-bolt torque confirmation. Together, those features support dependable long-term performance in demanding solar environments.

Instead of routing individual string cables to a central combiner box, IPCs connect strings directly to a trunk bus cable that runs along the array. This eliminates combiner box hardware, reduces underground conduit runs, lowers voltage drop, and cuts total connection points dramatically — resulting in less labor, less material, and fewer potential failure points.

UL 9703 was developed specifically for wiring harnesses in distributed generation systems. It requires more aggressive testing — including freeze cycles, thermal chamber, wet high-pot, and impact tests — than UL 486, which covers a broader range of general-purpose connectors. It’s the highest standard available for solar EBOS connections.

Our IPC product line covers trunk bus sizes from 1/0 AWG through 1000 KcMil, with tap cable support from #10 AWG up. Available in dual-tap and multi-tap configurations to match your array string count and inverter layout.

An IPC connects string-level DC wiring to a trunk bus cable by piercing through the cable insulation with tinned copper teeth. This eliminates wire stripping in the field, reduces connection time, and creates a sealed, weather-resistant joint. The result is fewer failure points and faster array commissioning.

NPDesign engineers and delivers EBOS infrastructure for utility-scale solar projects, with a strong focus on Solar IPC trunk bus systems, connectors, engineering support, and project-specific kitting and logistics.

An IPC connector is an insulation piercing connector designed to create a field-installed electrical tap connection without requiring wire stripping at the tap point. NPDesign presents IPC connectors as a faster and more efficient solution for solar trunk bus systems.

NPDesign IPC connectors are designed to install in under two minutes per tap. That faster install time helps crews move more efficiently across the array while keeping the process simple and repeatable.

The IPC product line covers trunk bus sizes from 1/0 AWG through 1000 KcMil, with tap cable support starting at #10 AWG depending on the model. This gives project teams options across a wide range of utility-scale solar layouts.

An IPC trunk bus system can reduce connection points, simplify array wiring, and lower field labor compared with more traditional DC wiring layouts. It also helps create a cleaner, more standardized installation process across large solar projects.

Instead of routing individual string cables back to a central combiner box, IPCs connect strings directly to a trunk bus cable along the array. This can reduce hardware, lower conduit needs, cut total connection points, and help reduce both labor and material costs.

NPDesign provides both products and engineering support. That includes site plan review, single-line review, IPC sizing, array layout support, field guidance, and other services that help customers apply the right EBOS solution to the project.

Yes. NPDesign can kit connectors, trunk cable, harnesses, and accessories by site zone and construction schedule. This helps crews receive materials in a more organized way for the work being done on site.

UL 9703 is a photovoltaic connector standard that supports safety, inspection confidence, and project compliance. Using listed components can also help give developers, EPCs, and contractors more confidence in the connection system being installed.

UL 9703 is tailored specifically to photovoltaic and distributed generation wiring applications, with more aggressive testing for solar use conditions. That makes it a stronger fit for solar EBOS connections than a broader general-purpose connector standard.

The process starts with sharing the site plan and single-line diagram. From there, NPDesign reviews the EBOS requirements, develops the connector and trunk bus approach, and helps move the project toward kitting, delivery, installation, and energization.

Customers can reach out through the contact and quote request options on the site, and NPDesign also lists in**@*********lc.com as a direct contact email.

NPDesign provides both products and engineering support. That includes site plan review, single-line review, IPC sizing, array layout support, field guidance, and other services that help customers apply the right EBOS solution to the project.

Yes. NPDesign helps determine IPC sizing, trunk bus layout, and harness tap planning so the system matches the project’s layout and electrical requirements.

Yes. NPDesign supports full EBOS design work, including trunk bus routing, harness tap configuration, and connection-minimization strategies intended to reduce labor and simplify installation in the field.

Yes. NPDesign can kit connectors, trunk cable, harnesses, and accessories by site zone and construction schedule. This helps crews receive materials in a more organized way for the work being done on site.

Yes. Part of the design approach is selecting the right trunk bus layout and harness configuration to minimize total connection points across the array. That can help reduce labor, simplify installation, and lower opportunities for field error.

NPDesign IPC connectors are designed to install with a standard socket wrench. This helps keep the field process simple and easy to repeat across large solar installations.

NPDesign products help reduce labor by cutting connection counts, eliminating wire stripping at tap points, and simplifying the overall installation process. This makes them especially useful on utility-scale projects where repeated field tasks add up quickly.

Yes. NPDesign offers field installation support, torque quality programs, crew training, and pre-commissioning guidance to help teams install the system correctly and consistently.

Yes. The use of shear bolts to confirm proper torque helps improve installation consistency and reduce the kind of guesswork that can lead to callbacks or rework later.

Yes. NPDesign products are built for utility-scale outdoor solar applications, where components need to hold up in environments exposed to weather, dust, and site debris.

An IPC connector is an insulation piercing connector designed to create a field-installed electrical tap connection without requiring wire stripping at the tap point. NPDesign presents IPC connectors as a faster and more efficient solution for solar trunk bus systems.

NPDesign IPC connectors are designed to install in under two minutes per tap. That faster install time helps crews move more efficiently across the array while keeping the process simple and repeatable.

The IPC product line covers trunk bus sizes from 1/0 AWG through 1000 KcMil, with tap cable support starting at #10 AWG depending on the model. This gives project teams options across a wide range of utility-scale solar layouts.

NPDesign IPC connectors use shear bolts that confirm proper torque during installation. This helps reduce guesswork in the field and supports a more consistent connection from one tap point to the next.

An IPC trunk bus system can reduce connection points, simplify array wiring, and lower field labor compared with more traditional DC wiring layouts. It also helps create a cleaner, more standardized installation process across large solar projects.

Instead of routing individual string cables back to a central combiner box, IPCs connect strings directly to a trunk bus cable along the array. This can reduce hardware, lower conduit needs, cut total connection points, and help reduce both labor and material costs.

Yes. NPDesign’s IPC connector lineup is UL 9703 certified and listed, which is a major part of its product positioning for photovoltaic applications.

The process starts with sharing the site plan and single-line diagram. From there, NPDesign reviews the EBOS requirements, develops the connector and trunk bus approach, and helps move the project toward kitting, delivery, installation, and energization.

The best place to start is with the array layout and single-line diagram. That gives NPDesign the information needed to review the system and recommend the right connector configuration.

Yes. NPDesign offers zone-kitted delivery aligned with the construction schedule so connectors, cable, harnesses, and accessories arrive in a more useful and organized way for the field team.

Yes. NPDesign supports the project from early design review through engineering, kitting, delivery, installation support, and final energization.

Customers can reach out through the contact and quote request options on the site, and NPDesign also lists in**@*********lc.com as a direct contact email.

A seal plug assembly is used to close off unused connector cavities and open ports in a solar electrical system. It helps maintain environmental sealing and protects the system from moisture, dust, and debris.

Outdoor solar systems are exposed to weather, dirt, and harsh site conditions, so unused openings still need protection. Seal plug assemblies help maintain system integrity by sealing those areas and supporting more reliable long-term field performance.

No. Seal plug assemblies are non-conductive components intended for sealing and protection, not for carrying electrical current.

They are commonly used anywhere a connector cavity or port is left unused and needs to be sealed. In photovoltaic systems, that helps keep open connection areas protected and better suited for outdoor service conditions.

A splice connector is used to join two conductors inline as part of the field wiring system. It creates an electrical connection that is meant to be durable, low-resistance, and suitable for demanding outdoor applications.

Splice points need dependable electrical performance and good environmental protection, especially in utility-scale solar. Using the right splice components helps support long-term reliability and a cleaner, more secure installation.

NPDesign splice solutions are built for durable field wiring and are described as offering low-resistance electrical performance with strong mechanical pull-out characteristics. That makes them a practical fit for demanding solar installation environments.

A splice connector should be used when two conductors need to be joined inline in the field. In solar projects, that can be part of maintaining electrical continuity while keeping the wiring layout practical and installation-ready.