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100 amp wire size | Power cord specifications Cable Specification

100 amp wire size | Power cord specifications Cable Specification

July 31 , 2023 0

Typical sizes of wires for 100 Amp Service are 4 AWG or 2 AWG for copper wiring and 2 AWG, 1 AWG, or 1/0 AWG for aluminum or copper-clad wiring. These sizes are also used for direct burial. When choosing 100 amp service wire size, remember that a 100 amp circuit at 240V can proceed up to 24,000W of electricity.

WHERE IS 100 AMP SERVICE USED?

Mid-size homes and apartments
Older homes with a limited number of appliances
Detached garages
Workshops
Agricultural facilities
Temporary power at construction sites
Subpanels and circuit breaker panels in residential, commercial, and industrial buildings

100 amp service is a very common type of electrical service, and you can find 100 amp subpanels everywhere.

Is 100 amp service enough for your home? The answer depends on the size of your home and your appliances.

A 100-Amp service panel is typical for mid-size private houses and apartments with several 240-volt appliances and basic air conditioning. It is quite standard for older homes that have a limited number of appliances.

While 100-amp service is enough for such homes, it is not common for larger houses with the combination of electric and gas appliances and high-power demand. In these houses, 150 amp and 200 amp services are more common. 100 Amp service is not good for

houses over 3,000 square feet with central air conditioning or electric heat.

Other basic applications of a 100 amp service panel are detached garages, workshops, agricultural facilities, and temporary power at the construction sites. 100 Amp service may also be used to feed different subpanels and circuit breaker panels in residential,

commercial, and industrial buildings. In general, a 100 AMP service is very common, and you can find a 100 amps sub panel everywhere.

100 Amps Type of wire where attention is needed：

Wires Used in 100 Amp service are different depending on whether it is copper or aluminum wire. Both are perfectly fine to use in these panels. For commercial applications, flame-retardant, plenum or riser-rated, and low-smoke zero halogen cables should be used.

How many square metres of wire for 100a current:

100a current can be used 25 square millimetres of copper core wire, can safely carry the use of 1 square millimetres of copper core wire safety load capacity is 5-8a, that 100a current should be at least 20 square millimetres of copper core wire to meet the load

requirements, taking into account the use of temperature, cooling conditions, laying conditions, and other factors, you need to choose a larger specification of the wire, for example, 25 square, 35 square copper core wire.

How many square metres of wire for 100a current:

Household wire has several specifications:

1.5 square wire

General household basic lighting line are available 1.5 square, this is the most basic wire, there is a wire plug or some small household appliances can also be used 1.5 square wire.

2.5 square wire

2.5 square wires than 1.5 square some of the larger, relative to the previous aluminium wire, now mostly copper wire-based. Copper-based 2.5-square wire can basically drive the regular home appliances, such as rice cookers, induction cookers, electric kettles and so on.

4 square wire

4 square wire than the previous two wire specifications to be more advanced, the power is also significantly larger, applicable to the home power appliances, such as air conditioning, fresh air systems, sanitary heating, water heaters and so on.

6 square wire

6 square wire is the largest square wire, generally into the home of the wire are using 6 square wire, such as each outdoor home distribution box are using 6 square wire.

Commonly used conductive materials:

copper

Copper has good conductivity, sufficient mechanical strength at room temperature, good ductility, easy to process, stable chemical properties, not easy to oxidise and corrode, easy to weld, so it is widely used in the manufacture of transformers, motors and various

electrical appliances coil. Pure copper is commonly known as purple copper, high copper content, according to the degree of hardness of the material can be divided into hard copper and soft copper. Copper after calendering, drawing and other processes to increase

the hardness of the process, called hard copper, usually used for high mechanical strength requirements of the conductive parts. Hard copper after annealing treatment to reduce the hardness, that is, soft copper. The coefficient of resistance of soft copper is smaller

than that of hard copper, and it is suitable for making coils of motors, transformers and all kinds of electrical appliances. In the product model, the sign of copper wire is "T", "TV" means hard copper, "TR" means soft copper.

Aluminium

Aluminium conductivity coefficient is greater than copper, but its density is small. The same length of the two wires, if they are required to have the same resistance value, the cross-sectional area of the aluminium wire is about 1.69 times the copper wire. Aluminium

resources are more abundant and cheaper, when copper is in short supply, aluminium is the best substitute. Aluminium conductors are more difficult to weld and special welding processes must be adopted. The aluminium used on motors and transformers is pure

aluminium. Due to different processing methods, aluminium is also divided into hard and soft aluminium. Most of the aluminium used for motor and transformer coils is soft aluminium. Aluminium wire is marked with an "L" in the model number, with "LV" indicating

duraluminium and "LR" indicating soft aluminium.