A 200 amp business needs a wire size of either 2 AWG or kcmil Copper wiring or 4 AWG or kcmil Aluminum or Aluminum clad wiring for the cabling to be installed. The voltage drop and also length the the wiring are factors in determining which wire to use. Aluminum wiring demands bigger size wires than copper wiring as result of its weaker conductivity 보다 copper.

You are watching: 2/0 aluminum wire for 200 amp service

For a 200-amp electric service, what size wire is required?

When creating a 200 amp electrical power line, it’s critical to usage the proper gauge wire. To finish the skilled installation, you’ll need a permit. Permits have the right to still be acquired by master in several regions. Inspect with the local real estate authority to see if friend can acquire the allow yourself or if you’ll must hire an electrician.

Inside a 3′′ conduit, a 200 amp electric organization requires #2/0 AWG copper cable or #4/0 AWG aluminum or copper-clad wire. A 200 amp structured wiring is not a do-it-yourself project. It typically necessitates obtaining a permit and also having a expert electrician install it follow to local electric codes.

The main electrical panel is positioned in an underground garage, basement, or inner room. Strength is obtained from the electric service lines and flows via the exterior electrical meter base and then right into the primary digital circuit.


Sizes of wire for a 200 Amp Service

The American wire Gauge (AWG) is the conventional for gauging electric wiring in the joined States.

Wiring a 200-amp service requires #2/0 copper, #4/0 aluminum, or aluminum covering wiring. The voltage difference and also lengths the the wiring dictate which cable is utilized.

The adhering to table shows, length and also voltage lose of wiring:

Rating for business or FeederCopper wire (Amperes)Aluminum or kcmil (AWG or kcmil)Aluminum Wire v a Copper Coating(kcmil or AWG)

The intake of #4/0 aluminum or copper-clad cable is widespread among electrical contractors. Since copper is an ext resistant to warm than aluminum, you’ll need a #2/0 AWG copper cable frequently used for electric wiring. Copper cable does no rust and is oxidation resistant.

#4/0 AWG aluminum wiring is compelled for aluminum or copper-clad aluminum wiring. Since aluminum has actually a poorer conductivity than copper, the necessitates a bigger cable size. To prevent corrosion, aluminum wiring requires an oxidative coating at the connecting terminals. In ~ the link terminals, copper-clad aluminum does not call for an antioxidant coating.

Aluminum wiring is typically used since it is less expensive, lighter, and an ext elastic 보다 copper, in spite of copper gift a better conductor.

Why Is Copper Wiring Used?

When it comes to wiring, copper is favored. Copper wire has actually several advantages, including:

The cable strands are thinner since copper is extremely conducting, permitting the wire to bend conveniently without breaking.

Why usage Copper-Clad Aluminum cable or Aluminum Wire?

For a range of reasons, aluminum cable is wanted for organization entry wire, including:

The length of time the service wire has remained in use

Consider exactly how long the company cable will certainly go native the meter come the electric box when considering wire size. The most significant voltage fall (which we will cover momentarily) is 3%. The potential distinction will regularly determine even if it is copper or aluminum wire deserve to be used and also the gauge required.

Service wires sizeDistance (approximate) to keep a 3% voltage drop
copper #2/0 wire50 feet
copper #3/0 wire100 feet
copper #4/0 wire150 feet
aluminum #4/0 wire50 feet
300 kcmil aluminum100 feet

Distances may differ depending upon where you are. For an ext information, call your local building department.

Wire made of aluminum and also copper is approved for 200 amps of service. Top top the other hand, the aluminum gauge will be higher due come a reduced conductivity and heat resistance. Copper wire deserve to be provided over a better distance.

Which is Better: 100 Amp or 200 Amp electrical Panels?

Which Amp electric Panels are the ideal for Wiring her Home? This will be your help if you attempting to figure out how large your leading power company is at house or if you ever need emergency power for a home remodeling job and also can’t decide between 100 amp and also 200 amp electric panels.



Amperage is a range that steps that is used to determine how much electricity is flowing with a home’s wiring. This figure can range from 30 amps in old homes to 400 amps in brand-new and larger residences with electrical heating and also other appliances.

Knowing the size of her home’s electrical organization is the most obtainable approach to identify whether you must use 100 Amp or 200 Amp electrical Panels to modernize her home’s electric system. Girlfriend should additionally determine whether the panelboard is considerable enough to accommodate the upgrade.

Electrical Panels: 100 Amp vs. 200 Amp

Which is better: 100 Amp or 200 Amp electric Panels for your home? While countless individuals execute not take into consideration replacing the electric panels a height priority, it is essential to renovate a house. The most far-ranging difference in between 100 amp and also 200 amp electric boards is the dimension of the latter.


The total capacity of the electric service listed by power suppliers to a residence is to express in amperes. It is why most residences either have actually 100 Amp and 200 Amp switchgear installed. This article will assist you understand the differences in between 100 amp and 200 amp switchgear and also which one will certainly be appropriate for your home.

Compared come a ahead 100 amp electric panel, the 200 amp system has actually many much more circuits because of its larger size. An ext circuits median you’ll be able to catch an ext from the electrical power sent by the strength provider to your home.


The easiest way to choose whether to usage 100 Amp or 200 Amp electric Panels to modernize her home’s electrical system is to understand the size of your electrical service. The in its entirety capacity of a home’s electric organization is express in amperes. It is why most residences have 100 or 200 Amp switchgear. Summary of the differences between 100 and also 200 amp switchgear and also which is best for your home. Because of its bigger size, the 200 amp panel features an ext circuits than a 100 amp panel. An ext circuits mean an ext electricity native the power agency to your home.

An wonderful Option for electric Appliances

For those who utilize many electricity-powered appliances, such as water heaters and also electric baseboard heating, a 200 amp electric board is the finest option. It is only essential for newer, contemporary buildings, as residences still usage fuel stoves or gas heaters will certainly not need much electricity.

Electrical baseboard heater is thought to be vastly more efficient in maintaining the home warm throughout the winter there is no driving up electrical energy expenses. As such 200 amp electrical panels room incredibly advantageous in colder climates.


Make Your home Future-Proof

Another factor why a 200 amp electric panel can be great choice to make is due to the fact that it is a simple way to future-proof your property. A 200 amp strength supply, for example, deserve to ensure that your home have the right to handle the pack if you setup to install many electric heaters or one air air conditioning unit. Do absolutely sure you have actually such a allow for a temporary electricity pole.

Shorts and also power failures need to be avoided at all costs

Most human being might think of power failures once a natural disaster occurs or when the vital components the the electric power device are severely damaged for whatever cause. However, short and also power failure can happen if girlfriend use plenty of electric-powered devices without offering them sufficient support.


This is frequently the situation when making use of massive electrical equipment like air conditioners and also electric baseboards heater without enough amperage entering your home’s electrical system.

This means that getting a 200 amp panelboard is your finest bet if you desire to stop power failures, blown fuses, and tripped breakers, which occur all too frequently when your residence doesn’t get enough amperage.

Potential Difference and also its Effects

The fall of voltage the happens end the wire due to natural resistance is called a voltage drop. The further a cable is run, the greater the voltage loss. Come compensate for the voltage drop, the cable gauge should be raised.

The breaker have to be collection to 120 volts. Take a total voltage in ~ the appliances or furthest device with a voltage meter. Moreover, a voltage fall of 3%, or 117 voltages, or 233 volts, indigenous a 240v circuit must be avoided.

Check the electric Codes and also Permit needs in her Area

The National electrical Standard (NEC) develops electrical standards. However, they can differ by location. Her 200 amp electrical organization will meet local rules and also permit needs if you hire a skilled electrician.


The 200 amp electronic circuit mentioned on this page originates from the NEC code, which may or may not it is in the exact same as her local structure standards. The NEC codes will be embraced or modified by your local code to satisfy their needs.

You’ll need an Occupancy permit before the utility agency can connect your residence come the power grid (CO). The permit provides for the last check prior to the link of the electric service. The CO is listed after the building inspector has inspected and approved the electric work.


Electrical baseboard heater is far much more efficient in maintaining the house warmth without increasing electrical power costs. So 200 amp electrical panels are great for cooler climates. A 200 amp electrical panel is also great method come future-proof her home. Getting a 200 amp panel board will aid you protect against power outages, puffy fuses, and tripped breakers. Set the breaker to 120 volts. V a voltage meter, full the voltage at the appliances or gadgets. A 3% voltage drop, or 117 volts, indigenous a 240v circuit, should additionally be avoided.

How much does it cost to placed in a 200 amp electric service?

The cost of setting up a 200 amp link will vary depending on your an ar and local material costs. The cost will be chose by the amount of work-related required. A 200 amp structured wiring usually entails installing a 200 amp connection wire, conduit, meter bases, and a 200 amp electric panel.

Total 200 amp electric wiring will certainly cost roughly $1,600 to $6,100, v an average price of roughly $3,700, and also will include the following:

“A new 200 amp company can cost between $3,200 come $4,000 .” follow to MidPenn Electrical, a renowned electric contractor in Pennsylvania.

Frequently Asked questions (FAQs)

People asked many questions related to the 200 amp organization wire size few of lock were debated below:

1.How much cable would I require for a 200-amp service?

Wiring a 200 amp service necessitates using either 2 copper wiring or #4/0 aluminum or aluminum clad wiring. The voltage and also lengths that the wiring determine which cable is utilized. Many electricians choose 4 aluminum or copper-clad wire.

2.For a 200 amp service, what size aluminum carry out you require?

No 2-O copper or No 4-O aluminum is the size for a 200 amp service. Because that a 200 amp service, the cabling need to be 2 AWG or kcmil copper wiring or 4 AWG or kcmil aluminum or aluminum sheathe wiring.

3.Is it feasible to use 1 0 aluminum wiring in a 100- amp breaker?

No, Al #1/0 is only an ideal for 125A in a dwelling connection; if the street is more far-reaching than 100’, it may be 100A. A 200A organization needs a least of 4-0 aluminum or 2-0 copper; if a lengthy distance is involved, upsize appropriately.

4.What is the function of bonding the neutral and ground at the main panel?

Other than the main panel, the neutral and ground are retained separate to avoid a parallel ground path. The strength you obtain from the power energy (240VAC in the united States) comes from a step-down transformer near to your house.

5.Is it feasible to use 4-0 cable in a breaker?

1-0 will certainly most likely fit into your circuit breaker. Download a connector and shorten the conductors at each side because that a tiny distance right into the panel for termination if the #4/0 is already installed.

6.What wire should I usage for a 100-amp circuit?

For single-phase, circuits, use 2-0 AWG copper cable or 4-0 AWG aluminum wire. When you have three-phase circuits, usage 1-0 AWG Copper cable or 3-0 AWG Aluminum wire. The best voltage drop for these lines have to be 3%.

7.Is it possible to feeding a 100-amp subpanel with a 60-amp breaker?

A 60-amp breaker have the right to be supplied to feed a 100-amp panel. That is important to remember that the subpanel have to be rated higher than the breaker size.

8.Is it possible to put a 200-amp dashboard on a 100-amp service?

A 200 amp major breaker dashboard cannot be set up on a 100-ampere organization unless company is safeguarded in ~ 100 amps.

9.What does it take to upgrade come a 200-amp service?

To convert to a 200-amp service, professional electricians will require to get a permit. Friend will more than likely need to turn off the electricity to fix the meter bases and connect the 200-amp business cable, main disconnection, and 200-amp main electric panel.

10.What are the signs that the electric panel is overloaded?

If you an alert a buzzing noise or watch lights close to the main switchboard, it way there is a severe electric problem. Overloaded circuits can damage breakers, connectors, and also wiring, bring about arcing, resulting in flame or buzz noises, and also posing a significant fire risk.


It is vital to utilize the exactly gauge wire while producing a 200 amp electrical power line. Because that the cabling to be installed, a 200 amp organization requires either 2 AWG or kcmil Copper wiring or 4 AWG or kcmil Aluminum or Aluminum wrapped wiring. The voltage drop and also length the the wiring are necessary considerations as soon as deciding which wire to utilize.

Knowing the lot of your electrical business is the many straightforward technique to choose whether to use 100 Amp or 200 Amp electric Panels to modernize her home’s electrical system.

Amperes are provided to to express the total capacity that a home’s electric supply. As a result, most residences have actually switchgear rated in ~ 100 or 200 amps. An explanation the the distinctions in between 100 amp and 200 amp switchgear, and also which is ideal for your home.

The 200 amp dashboard has more circuits than the 100 amp panel as result of its bigger size. More circuits indicate that more electricity is being sent out from the power agency to your home.

Electrical baseboard heating is significantly much more efficient at keeping the house warm while reducing electrical power expenses. Together a result, 200 amp electric panels are appropriate for milder areas. A 200 amp electrical panel is also an excellent way come prepare your residential or commercial property for the future.

See more: The Card Catalog Lists Books By Subject, Author, And Title., Types Of Card Catalogs

A 200 amp panel plank will assist you in preventing power outages, blown fuses, and also tripped breakers. Collection the circuit breaker come 120 volts. Total the voltage in ~ the appliances or devices using a voltage meter. A voltage drop of 3%, or 117 volts, indigenous a 240v circuit, should additionally be avoided.