Using Romex® Cable for Electrical Wiring in Your Home

Romex is a brand name used for a sheathed cable that is non metallic. Using Romex® cable in your home is your best option for wiring method because it’s so easy to install. The only materials needed for its installation are few handy tools such as hammers, wood chisels and cable cutters; unlike in other wiring methods that involves conduit, the electrician is required to use expensive, bending, cutting and threading tools.

The Romex® NM-B cable is comprised of insulated wires that are individually covered by a plastic vinyl coating. Typically, Romex® is created with a conductor or bare copper wire to be used on ground for earth safety. The wire used on ground for earth safety carries the errant voltages and return them to the panel box. The errant voltages usually take place when a certain hot wire collides with the baseboard heater’s metal frame.

The Romex® cable must be installed in areas which are not receptive to wet environments or any mechanical damage. The typical installation areas of the cable are alongside floor, ceiling joints and inside the wall cavities. The cable must also be supported to avoid sagging. This can be done through installing a plastic or metal cable in every 8 feet.

If you want to start using Romex® cable in your home, here are some helpful tips you need to keep in mind:

• Turn off all the cables which are inside the electrical box. The box can be either metal or of plastic construction.
• There are cable connectors attached inside the box. Use them to get the cable secured inside the electrical box.
• Use an approved metal cover to cover the electrical boxes. You can also use the device cover that comes with receptacle cover plates and finished switch plates.
• In order to reveal the insulated wires, use a pocketknife and remove six inches outer part of the insulation.
• Put wire strippers at the end of each wire. Reveal at least one inch of the copper and twist the wires together. This must be done in order to get the connection for that particular circuit.
• Cover every bare copper by using a single wire nut.
• All Romex® cables that are exposed to mechanical damage and wet environments must be placed inside the conduit.
• For underground installations, the required type of cable to use must come with a rated specialized underground Romex® or any type of NM cable. These cables, which are impervious to water infiltration, are also called the UF (underground feeder) type of cable and they always come in thicker exterior.

The national electric code has approved using Romex® cable in your home. In article 334.10, it was stated that the type NM wire can be run for both concealed and exposed work in usually dry locations. However, you must keep in mind that Romex® can’t be used on any kind of permanently installed extension cords. This is because it can cause an electrical shock hazard when the solid wire breaks inside the plugs.

WesBell Electronics Inc
(800) 334-8400

Pertinent Details on Locating Romex Cable with Ground According to the National Electric Code

Even without the help of a licensed electrician, we ask ourselves if we can work on some electrical wiring installations on our own. However, the National Electric Code determines specific instances on how you must use every electrical wiring. Due to this, if you are not highly knowledgeable and completely skilled in this electrical wiring endeavor such as installing Romex® cable with ground, you must first familiarize with the National Electric Code and seek professional assistance.

A certain portion of the National electric Code specifically mentions about installing wires on either wet or dry locations. The National Electric Code differentiates electrical wirings on the basis of the planned location of such electrical wiring.

Article 310.8 (A) and (B) specifies the electrical conductors and cables that are allowed only in dry locations. Included are these types of electrical cables and well-insulated conductors: ZW, Z, XHHW-2, XHHW, XHH, TW, THWN-2, THHN, THW-2, THW, THHN, SA, RHW-2, RHW, RHH, PFA, MTW, FEPB, and FEP. These are the only types of insulated cables and conductors recommended and allowed by the governed as specified in this article and sections of the National Electric Code.

On the other hand, the National Electric Code also specifies electrical conductors and cables that are recommended and allowed for installation in wet locations. These types of electrical cables and well-insulated conductors are: ZW, XHHW-2, XHHW, THWN-2, THWN, THHW, THW-2, THW, TW, RHW-2, RHW, and MTW. Note that there are some types of these electrical cables and conductors that can be used in either wet or dry locations. It is the licensed electrician who can give a precise selection on which electrical wiring to use. Note that Romex® cable with ground has its own specifications and technical details to serve as your basis in determining whether it can be allowed for a wet or dry location for installation.

Thus, another part of this discussion is to help you determine the right electrical wire to use. Identify the circuit type you are planning to install. It is either a 110-volt or a 220-volt circuit. It may also either be a dedicated or undedicated circuit. A dedicated circuit can power only one item while an undedicated circuit can power several items that are plugged in. A 110-volt circuit is good for lighting equipment, TV, radio, and washing machine. The 220-volt circuit is suitable for electric wash dryers, refrigerators, and other power-heavy appliances.

You may also need to identify the amperage level of the circuit you plan to install. To be able to do this, you must verify with the product manufacturer or company reseller whether the amperage is suitable enough. Knowing the circuit type and amperage level will help you identify the correct electrical wire to use. There are standard charts that provide detailed and correct information about these; they are either available online or can be consulted with a local licensed electrician. You may also check other materials and details about the Romex® cable with ground and find out its suitability for indoor use and where to install it.

WesBell Electronics Inc
(800) 334-8400

Romex 14 2 Cable – Your Home Wiring Needs

Romex® (rome-eks) has become the standard brand name in sheathed, insulated wires. Electrical systems in homes and businesses are mostly wired using Romex®. It is made up of two or more insulated wires with a flexible plastic sheath. Romex® cable can be run through walls, attics, under floors and others.

Romex® wire comes in many different sizes. Romex® 14/2 Cable is used as branch circuits for switches, outlets and other loads in residential wiring. It can also be used in concealed or exposed work in normal dry locations. You may run it in air voids of masonry block or in tile walls but should not be subjected to too much moisture. This cable is not for direct burial on the ground.

Romex® cable is easier to run through holes in studs due to its flexible sheath compared to metallic sheath and it is also cheaper. That is why it is labeled NMC which means non-metallic cable. NM is the sheathing used to distinguish it from metallic (BX or AC) sheathed cable. A rating of 14/2 pertains to the wire gauge and how many wires are inside the cable. 14 is the wire gauge and 2 means there are 2 wires in the cable. The lower the gauge is, the larger is the wire.

Romex® 14/2 Cable comes in white color jacket only because it falls under the #14 wire range. Other gauge sizes come in different jacket colors. This type of Romex® cable is an indoor residential electrical wire with solid bare copper strands. It weighs 57 lbs per 1000 feet and has 15 amps. It can resists temperatures up to 90°C and a maximum of 600 volts.

If you are thinking of using Romex® wires for your household wiring system, you need to make sure that you know the correct size to be used. The length and amount of amps you want are important to know the correct awg size. When you talk to your electrician or contractor, this information is needed so they can give you accurate information of what type of cable you should use. Take note that this cable is for indoor use only. If you need to run a cable outdoors, then you need a different type of cable built for outdoor use.

For a cable that pulls faster and strips easier, Romex® 14/2 Cable has these qualities. It is also tear resistant and has reduced burn-thru. It comes in 2 and 3 conductors and has awg sizes of 14, 12 and 10. Wesbell Electronics offer larger Romex cables by the foot in awg of 8, 6, 4 and 2. Since you need specific lengths and does not want to put your excess to waste, Wesbell Electronics allows purchasing of larger Romex® wires and UFB cables in any length that you desire.

For any specific requirements that you need for your cables and wires, please call Wesbell Electronics customer service and they will be glad to answer your inquiries and assist you in your wiring needs.

WesBell Electronics Inc
(800) 334-8400

Copper Electrical Cable Differences

Copper electrical cable is very expensive, but the real differences in price actually comes down to the insulation type more than the copper. Copper is the conductor of electricity in all copper electrical cables and the price of copper changes everyday. However, Romex 6/3® has the same amount of copper as UFB 6/3, so why is the price different?

A 6 awg wire is a 6 awg wire whether it’s in a Romex NMB® jacket or a tough underground PVC jacket. That means each 6 awg wire would be the same price if they were both stripped of all insulation. A UFB underground insulation was manufactured to be used without conduit. So the jacket needed extra protection in order to last as long as an electrical cable in conduit.

In order of the amount of protection Romex® comes first, MC cable second and UFB cable third for electrical cables. Even though each of these cables have different levels of protection they all still have THHN THWN as the wire conductor insulation, so what changes the fact that some have more restrictions?

Romex® cable has a bare copper uninsulated ground wire, but lacks a strong enough jacket to protect it outdoors or in conduit. Moisture, gas, solvents and other fluids can puncture the jacket and hit the bare ground wire leaving it only available for wiring indoors.

MC cable is manufactured with all THHN wires and a THHN insulated green ground wire. That allows MC electrical cables to be used outdoors and in conduit because it resists all water, moisture oils and gases without an uninsulated ground wire in the way.

UFB cable is manufactured as an underground electrical cable which is also known as direct burial in the wire and cable industry. It still has an uninsulateed ground wire but the PVC jacket is engineered tough enough to protect all of the wires even when used directly underground.

In order to find the cheapest cable possible you’ll want to first speak to an electrician to let you know the awg size of the cable you need. This will prevent you from getting a size too big and paying more money than you need to. The second thing you want to do is make sure you’re not getting too much insulation that you may not need. Getting UFB cable when you’re using conduit anyways is a waste of money. You should get MC cable which is cheaper and manufactured for use in conduit.

We offer exact cut lengths on all of our electrical cables and THHN wire because in the contractors, engineers and installers like to have the exact length they need to avoid waste of small lengths at the end of each spool. We also offer free shipping on orders over $250 so that you don’t have to negociate deals with trucking companies to get spool of wire or cable.

Please call us if you need any type of wire, cable or heat shrink tubing as we’ve been a stocking distributor for over 25 years.

WesBell Electronics Inc
(800) 334-8400

Indoor Outdoor and Underground Copper Electrical Wire

Electrical wire comes with all different types of insulation, but they all have the common denominator of copper or aluminum stranding. The insulation changes the expense of the wire or cable based on the environment you need to place it in.

Indoor Wire and Cable

THHN wire is the most common type of single conductor electrical wire. It’s manufactured with a dual rating of THHN and THWN so that it’s all water resistant. It can be used indoors and in conduit only.

Using your copper wire and cable indoors requires the least amount of protection on the insulation because there isn’t much that can hurt it. There isn’t any moisture, oil or solvents effecting the life of the insulation so it can be made for less money. Romex cable is the most common type of indoor electrical wire which uses THHN wire conductors.

Outdoor Wire and Cable

THHN is still the single conductor wire used outdoors and in conduit because the THWN rating can resist water, oil, gases and solvents. However, running 3-4 single wires can be difficult for the installer because they’ll have to run each one individually or tie all 3 together and try to run them as one.

Romex will not work outdoors OR in conduit so you’ll have to upgrade in quality and price to an MC Cable. It’s manufactured with THHN wires and a Metal Clad jacket for easy installation in conduit. The ground wire in MC cable is also a THHN wire rather than a bare copper ground wire so the cable remains moisture and solvent resistant.

Underground Electrical Wire

THHN cannot be buried directly in the ground so you’ll have to upgrade on a single conductor to USE-2 wire. It’s used mostly on solar installations and has a rubber insulation.

If your installation is directly in the Earth instead of in conduit then you’ll have to upgrade to a UFB cable which is an underground feeder cable. It’s color coded and flat instead of round with a bare copper ground wire. The insulation covers each conductor individually to keep it water and moisture tight directly underground.

Tray cable is also an underground cable for larger sizes since UFB cable only goes as large as 6 awg 3 conductor. Tray cable goes as big as 500 mcm 4 conductor with ground. It has all black numbered THHN conductors and an overall PVC jacket. We sell it per foot on our website so that you can get the exact length you need and avoid any waste.

Those are the basics of indoor and outdoor electrical wire. There are also basics on electronic wire and cable based on heat and voltage ranges for different applications.

WesBell Electronics Inc
(800) 334-8400

Information and Facts on Power Cable

Power cable comes in a variety of shapes and sizes, and can look complicated to the layman. These cables can be single-conductor, multi-conductor, as well as industrial strength or for personal use. Each type of power cable has its own advantages, which make them suitable for certain types of applications.

A power cable is categorized in three classes, 1) high voltage (for applications requiring load greater than 40,000V), 2) medium voltage (for applications requiring load between 6000V and 36,000V) and 3) low voltage (for applications requiring load below 1000V). These cables are used for feeders and other heavy machinery, along with branch circuits in electrical utility, commercial and industrial applications.

Single-conductor power cable is used in various applications such as stage lighting, locomotives, DLO and for welding purposes. Each single-conductor cable, depending upon its use, has a different rating for amps, voltage, flexibility and insulation, each having a different price-level.  

There are many multi-conductor cables; extensions cords, Type G-GC, Type W, SOOW and portable cords, each encased a rubber jacket for insulation. These cables are safe and flexible and when additional flexibility is required, there is a multi-conductor cable available for this need. The SOOW multi-conductor cable is similar to the extension cord (before the plugs are attached) and is generally used to supply power generators and tools in industries.

The least-expensive power cable of this group is the welding cable. Welding cable has a rubber jacket and flexible copper fibers and is rated to 600V. DLO cable also has the rubber jacket, is rated to 2000V and has tinned copper fibers. The DLO can carry more power and therefore has a higher corresponding price.

Remember, when installing power cable, it is recommended that you consult with your electrician. And when it is time to purchase your cable, some helpful hints include knowing the operating temperature, amperage, voltage, outer diameter (cable diameter + insulation jacket). Please call WesBell at 800-334-8400 for all your cable needs.

Installing THHN cable in cold weather

When the weather is cold, you can have problems not just with your heating bills and skin, but also with your cables. For example, the THHN cable is easily vulnerable to deterioration due to cold weather.

THHN cable is Thermoplastic, High-Heat Resistance, Nylon-Coated, therefore the name- THHN. Though it is versatile cable and does not fall under any specific application category, it is mostly used under Hook-up wire class.

Strengths

THHN cable comes in a variety of strengths. And since it is made from thermoplastic material, it is easy to heat and cool this wire many times to change its shape. But there is a limit to the number of times this wire can stand heating and cooling. It has its lower and higher temperature limits and if the temperature changes cross this range, this wire can become unstable. Temperature range depends upon manufacturers.

When the THHN cable comes with ‘High Heat’ rating, it means that this wire can be used in high temperature scenarios. These wires come with various specifications, which determine the specific applications where these can be used. For example, “Nylon coated” means that a certain thermoplastic material is used in this wire.

Coming to installation of the THHN cable in the cold weather, there are some simple guidelines that you should follow. Keep this cable indoors, and not in the outdoor harsh environment. Generally, a temperature of 65°F works well.

If keeping the cable indoors is not possible, bring it inside for at least 24 hours, before you install it.

If the outside temperature is below 14°F, then do not install the THHN cable.

While installing the cable, take care that it is not dropped on the floor, as these impacts can cause cracks in the stiff cable material.

Make sure you do not bend the cable too much, because it can cause the cold and stiff cable to break.

Once you have installed it, this cable will work properly in environments with temperature higher than 14°F.

All you need to Know about High Voltage Cable

If you want to transfer large amount of electricity, then high voltage cables are your safest bet. There are various forms of these cables, and all are used for different purposes depending upon voltage of electricity and the machines for which these are used. Three types of cables are: high, medium, and low voltage cables. Out of these, high voltage cables are used when the voltage is above 1000 V. These cables are heavily insulated to prevent any risks or hazards.

• AC power cables

These cables are used to transfer up to 2000 V of electricity. The composition of these cables includes cross section of cable, polyethylene insulation, and conductive material like aluminum or copper. These cables are highly flexible and work well both in low as well as high temperatures. The cable layers are fused together to avoid air seeping in, as this can cause electrical discharge, thereby damaging the insulation.

• HVDC cables

These are specialized cables that are designed for high voltage direct currents, and thus are called HVDC cables. If you have seen a power line, then it would be easy to understand, as a power line is also an HVDC cable. These cables are helpful in carrying large loads of electricity over longer distances. After reaching the transformer, their electricity is converted to AC form. Thereon it runs with lower voltage, and is transferred to businesses and homes.

• X-ray cables

These cables are used to link other high voltage cables with X ray machines. These are also used to connect high voltage cables to other scientific equipment that require higher loads of electricity. These are highly flexible cables. They have a braided cover of copper wires, and are insulated with rubber. These are fused to high voltage cable to provide safety, and to reduce the hazards of electric shocks.

All these cables are not for home use. These are used to connect high power sources to other devices or cables. If you want to buy these cables, make sure you go for the best quality, as bad cables can lead to dangerous situations.

Using Teflon wire for High Temperatures

Wire insulated with Teflon, or Teflon wire, is very useful. If you have been using PVC hook up wire to fight insulation melt downs, then you will be pleased to use Teflon. It cannot even get affected by a soldering iron. It has been used since the 1960’s due to its excellent performance in high temperature scenarios. Some companies also use it in classification of surface electronics.

Teflon wire has got copper strands, plated with sliver. The silver plating, along with Teflon insulation helps the wire to sustain extremely high temperatures. It is much better than basic hook up wire that suffers from melt downs in high temperatures. And due to its great heat withstanding ability, Teflon wire comes expensive. But in case your needs are about wiring places with extremely high temperatures, it will be a good investment in the long run.

This wire is made by following many methods. Two of the more common methods are wrapping and extrusion. Extrusion is the most common one and is done usually in the standard sizes of 24 AWG and 22 AWG. There are also some smaller sizes, where space is an important factor. The covering comes in fused and wrapped types. Teflon is also used as the outer jacket of co-axial cables.

Teflon wires also have great resistance to moisture, flame, damage from soldering iron, and thermal aging. Apart from that, the PTFE (polytetrafluoroethylene) coating is able to resist many harsh chemicals, ozone, greases, and solvents.

You can install these wires at many places, as they are very easy to fix. It also has low degree of power loss, and thus is great for high frequency usage. Because these wires are small and slippery, they can be used almost anywhere.

PTFE or Extruded Teflon hook up wire has 3 types: Type E (most commonly used, and rated for 600 V), Type EE (having thicker Teflon jacket, and rated for 1000 V), and Type ET (having thin cover, and rated for 250 V). All 3 of them can be used for temperatures up to 200^o C

Basics of Bare Copper Wire

We all know that of all the metals used all around the planet, copper is the number one metal in terms of its usage. This is because it is the most versatile metal, and it touches the lives of people in one way or the other. It has a significant role to play in electrical engineering branch in various ways. It has great conductivity power, and thus is used a lot in making electrical wire. Although there are many other available metals as well, but none can beat the versatility of copper.

Copper wire is available in both forms- with and without insulation. It depends upon the engineers- whether they want insulation or not. Depending upon where they are using the wire, they decide if it should have insulation or not. Both insulated and bare copper wires are used in different applications. They have their use in different engineering segments.

The bare copper wire is also called ground wire, since it has no protection or insulation. This wire is generally used as the platform for various wires and cables.

This wire can come either in solid form, or in small AWG sizes, wrapped to make some specific gauge. Experts say that using small AWG sized wire allows more flexibility to the wire, and it bends easily around the corners. Although flexibility is a good thing, but not in all cases, so a solid form bare copper wire is preferred in many scenarios. For example, electrical contractors require stiff wires, so that the wire could be sent through a conduit for longer distances.

Green THHN wire is called ground wire, particularly when that wire has to be used outdoors. It is used for grounding purposes to safeguard people against hazards.

So this is where bare copper wire is used. But before you purchase this wire, you must make sure that the company you are buying it from is a good and trusted one. One simple solution is to look for this wire online. You can find many trusted online companies that can provide you the kind of bare copper wire you want.