40 is length.. 0.16 is diameter... You nak buat apa? Wire lock?

Its 0.75mm2

Assume you are asking about 3 core wires

The wire contains 40 strands with each strand maximum diameter of 0.16 mm.
Cross section calculation is
= ((diameter/2)²) x Pi) x (number of strands)
= ((0.16/2)² x 3.14159) x 40
= 0.8 mm² nominal

https://www.st.gov.my/en/contents/presentat...NCES%202015.pdf
https://www.energy-solutions.co.uk/technical-information

40strand of 0.16mm2diameter = 0.73mm2
max can use 6ampere if its copper.

good enough for small led lights

016 is the size of individual copper strain
i think
and theres 40 of this strains

0.16 is the diameter
R is diameter bahagi2
To get area is pi r kuasa Dua remember?

So 3.142 x 0.08 x0.08

In jagung field ya

very humble good job man

What wiring work you doing?

Please find the sizing over here.

1.5mm2 for lighting/fans,
2.5mm^2 for rings sockets (regular non high current sockets)
4mm^2 for higher loads / kitchen


http://ocw.ump.edu.my/pluginfile.php/11228...al%20Wiring.pdf

usually all these weird size like 40/0076 or 70/0076 don't meet ST requirement for electrical wiring.

also, there are substandard cables (fake copper) around in the market.

this is something that one should read up on as electrical safety is not to be trifled with

should be power, signal dont need 40 strands. even so still missing the material, like copper or zinc, copper is alot better, but zinc is cheaper.

Unless you are building another webb telescope, why need to be so particular about the wire spec.  In Msia we use cross sectional area 1.5mm2, 2.5mm2 for wire size.

signal means data, like network cable, the cable that connect from switch to your autogate(send signal to open / close gate), ignore POE in this example.

signal need very small amount of current, all it need to do is giving signal, not do work

Go for mega cable for the best quality....

Usually there are 3 sizes...

1.5mm
2.5mm
4mm

Depend on your load... But imma recommend 2.5mm and 4mm

Yup, my power extension also made from 2.5mmsq
Whatever I plug in to it will be comfortably cool
It becomes a technicality that insurance can and will use to deny claim if you use substandard cable in permanent installation.
Weakest point is the ceiling for max current capacity of any cable.
Still got sell on spee. Its alright for low voltage battery experiments for school but certainly not for point wiring (permanent installation)
Even power strips also use 1.25mmsq as minimum standard in SG.

That depends on what u installing, if concealed in-wall circuits carrying 230V must follow 1.5mm min
its super cheap even if u buy loose cut per meter
don't even bother getting anything thinner because hard to strip

if its those extra low voltage purposes like HDMI/ LAN cable then its not really a problem on cable thickness since those are only for data signal

2.5mm so peace of mind as this is way overspec, its the same stuff as in-wall so this extension can use macam a wall socket (use kettle or vacuum or rotohammers). Its heavy, and expensive, nobody will use 2.5mm except me
1.25mm SG standard for power strips because that CCA > 13A so anyhow fuse will blow before wire catch fire
Using lousy wire for power strips just mean that the wire will overheat before 13A fuse blow

all those 40/0076 70/0076 are substandard cable spec. good for kids to play with science experiments to light up 12V car bulb je

13A SSO must be 2.5mm min
Double socket use 4mm

Electric stove >2990W need to be professionally installed, if it didn't come with a plug top from factory it is not supposed to be used on 13A socket. Either 20A isolator or CEE commando plug

Another keyword to look when buying extension cable is 'pure copper" and "SIRIM"

Some 'pure cooper' cable dont have SIRIM but it ok as long it 's real 'pure cooper'

"40/0.16" refers to the construction of the cable's conductors.

The first number (40) indicates the number of individual strands or wires that are twisted together to form the conductor. In this case, there are 40 strands.

The second number (0.16) refers to the diameter of each individual strand, measured in millimeters. In this case, each strand has a diameter of 0.16mm.

So, the full designation "40/0.16" means that the cable has 40 individual strands, each with a diameter of 0.16mm, twisted together to form a single conductor. This type of cable is commonly used for low voltage applications, such as in electronics and small appliances.

There are a few methods you can use to verify if a copper cable is genuine copper:

    Look for a copper hallmark: If you have access to a magnifying glass, you can look for a hallmark on the surface of the copper cable. This hallmark will typically indicate that the cable is made of genuine copper.

    Check the color: Copper has a distinct reddish-brown color, so if the cable has a different color or appears to be painted, it may not be genuine copper.

    Check the weight: Copper is a dense metal, so a genuine copper cable should feel heavier than a similarly sized cable made from another material. You can compare the weight of the copper cable to a known copper sample of the same size.

    Conduct a magnet test: Copper is not magnetic, so if the cable is attracted to a magnet, it may not be genuine copper.

    Test the conductivity: Copper is an excellent conductor of electricity, so you can use a multimeter to test the cable's conductivity. Touch one end of the multimeter to the copper wire and the other end to a known conductor. If the meter reads a high level of conductivity, the cable is likely genuine copper.

It's important to note that some copper cables may be coated with a layer of another material, such as tin or silver, so these tests may not always be conclusive. If you're unsure about the authenticity of a copper cable, you can consult a professional or take it to a testing facility for analysis.