Author: J & S Electrical Contractors

Electrical Circuits – FAQs

Understanding how electrical circuits work makes it easier to maintain and optimize the electrical system in your commercial building. That’s why the Master Electricians at J & S Electrical Contractors, Inc. have put together the following Q & A on the types of electrical circuits and how they work. You’ll also learn why major appliances and equipment require dedicated circuits. 

What Is an Electrical Circuit?

Circuits range from tiny microelectronic chips to huge power systems. Small chips can contain millions of transistors thanks to technological advances in the past 100 years. Electrical circuits consist of a closed loop of material capable of carrying electrical power through the wires and receptacles in your building.  

What Are the Types of Electrical Circuits?

There are four major types of electrical circuits:

  • Close Circuit: When a load has its own circuit, it’s a closed circuit. The current flow value depends on the system load.
  • Open Circuit: When you turn off a light switch, it’s called an open circuit. This can also happen when you have faulty wiring or other electrical components, resulting in non-working electrical systems. 
  • Short Circuit: The plus and minus ends of a power source meet, causing maximum current flow. This can cause damage to sensitive electronics and your commercial electrical system.
  • Series Circuit: When multiple loads (Bulb, Fan, CFL, LED, etc.) are mutually connected, it’s referred to as a series circuit. 

What’s the Difference Between an AC Circuit and DC Circuit?

Both AC and DC describe current flow. In direct current (DC), the electricity flows in one direction. In alternating current (AC), the current sometimes changes direction.

Examples of DC uses include cell phones and flashlights. AC uses include fans, HVAC systems, and lights. 

What Are Dedicated Electrical Circuits?

A dedicated circuit provides enough electricity to power larger appliances. A single circuit powers just one appliance. 

What Are the Sizes of Dedicated Circuits? 

It’s essential to know the right size circuit for appliances and equipment in commercial buildings. Otherwise, the breaker may continuously trip, increasing the risk of fire or overheating. The most common sizes range from 15 to 50 amps.  

What Appliances/Equipment Uses 15- to 20-amp Circuits?

These appliances often require 15- to 20-amp dedicated circuits:

  • Dishwashers
  • Refrigerators
  • Coffee makers
  • Garbage disposal units
  • Washers
  • Microwaves
  • Hairdryers

What Appliances/Equipment Uses 30- to 50-amp Circuits?

Heavy-duty equipment such as compressors require 30-to 50-amp dedicated circuits. Examples of appliances and equipment using these higher circuits include:

  • Dryers
  • Electric water heaters
  • Electric ranges
  • Compressors
  • Air conditioning units
  • Electric furnaces

If you have a problem with power surges or short circuiting, we can revamp your electrical panel for greater efficiency, safety, and performance. From rewiring your building to using dedicated circuits to power equipment and appliances, you can count on the expertise of our seasoned Master Electricians. Subpanels can also help regulate the electrical flow throughout your property.

J&S Electrical Contractors can design electrical systems with the correct electrical circuits and other components to safely power your commercial building. Call 215-633-8330 or contact us online for assistance with designing, installing, and maintaining your electrical systems.

Security Lighting to Protect Your Business and Patrons

You can dramatically improve the security of your commercial property with the right equipment. Advanced lighting design can help you save money while keeping your property well-lit and secure. When you work with the team at J&S Electrical Contractors Inc., you can choose low-maintenance, energy-efficient options, such as LED lighting, that are also safer for the environment.

Continue reading

Electrical Tips When Lighting Your Commercial Property this Holiday Season

The holidays are typically a busy season for commercial property owners and managers. It’s the busiest time of the year for retail properties and you want yours to look its best. Apartment buildings and other properties also look more welcoming and attractive all dressed up with decorations and lighting. To give your tenants, visitors, customers, and business owners an enchanting view on a wintry night, you need a strategy that features safety first, without sacrificing an awe-inspiring effect.

Continue reading

Lumens vs Watts – Choosing the Right LED Bulbs

When choosing LED light bulbs for your commercial building, it’s important to consider the difference between lumens versus watts. Unfortunately, many owners and facility managers look at wattage instead of lumens when purchasing LED bulbs. If you would like to understand the difference between lumens and watts, this blog has all the information you need to make an informed decision. 

Continue reading

Energy-Efficient Electrical Upgrades To Consider

Commercial buildings account for nearly 35% of all energy use in the country. If you have a large commercial or industrial facility, there are numerous electrical upgrades that will improve energy efficiency. These changes can decrease your organization’s impact on the environment and dramatically lower your monthly energy costs. Find out how J&S Electrical Contractors, Inc. can upgrade your electrical system and help you save money. 

Continue reading

Corporate Offices

J & S Electrical Contractors, Inc.
3170 Knights Road
Bensalem, PA 19020

Regional Offices

  • Allentown, PA: (610)432-6500

  • Woodbury, NJ: (856)845-1100

  • Princeton, NJ: (609)688-1100

Hours of Operation

  • Monday 7:00am-5:00pm

  • Tuesday 7:00am-5:00pm

  • Wednesday 7:00am-5:00pm

  • Thursday 7:00am-5:00pm

  • Friday 7:00am-5:00pm