Home
You are here: Home > INSTALLATION > Connecting a PV Solar Panel System

How to Connect a PV Solar Panel System

Here are design tips for methods of PV system utility interconnection. The purpose of this article is to give you a basic understanding of the concepts and rules for connecting a solar system to the utility grid and the household electrical panel. The utility connection for a PV solar system is governed by National Electrical Code (NEC) Article 690.64. Always refer to the NEC or consult a licensed electrician for safety and accuracy.

To keep it short, there are two basic approaches to connecting a grid-tied solar panel system. The most common is a "Load Side” connection, made AFTER the main breaker. The alternative is a “Supply or Line Side" connection made BEFORE the main breaker. Click on a section below to expand and read more about each approach.

Load Side Connection Question 1: Load Side Connection



Line or Supply Side Connection Question 2: Line or Supply Side Connection




WANT A SOLAR PANEL SYSTEM AT THE LOWEST COST? Start Solar Design
Sort By:
Page of 1
solar system design
Solar System Design
Custom Prepared in 3 to 5 days
Your Price: $449.00

(25)
   
 

Maximum Connected PV Inverter Watts

This table shows the maximum PV inverter watts that can be connection to the LOAD side of common single-phase residential electrical service equipment. Note how undersizing, or de-rating, the main breaker relative to the panel busbar rating allows for additional PV inverter capacity.

Maximum Connected PV Inverter Watts


LOWEST PRICE SOLAR PANELS
Get a FREE solar panel evaluation with the latest prices and rebates   Start Here