Hi,
A cable stated as 40/0.16 what does it mean?
0.16 means 16mm?

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

Its 0.75mm2

Assume you are asking about 3 core wires

Thanks guys for your prompt reply!

I see. Yg 0.16 diameter tu kira yg luar ke (3 wire dlm), atau pun yg dlm tu (1 wire 0.16 diameter)?

Utk lampu sambungan biasa. Boleh kan?

Oh 0.75mm², how do you translate?
Yes. 3C wires!

This post has been edited by mactreouser: Jun 25 2022, 04:10 PM

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

Wah... You are Expert 😜
Could you "teach" a little bit of the format? Interesting & useful 👍🏻

Thanks for confirming! 👏🏼
So the 40 is Strand! I see .
And this format "0.16mm2diameter = 0.73mm2" is from the chart given above?

Which means 0.16x3 = 40? 😲

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

OMG really forgotten 😭
You are cool! So, you are in the field?

In jagung field ya

very humble good job man

Haha. Funny but humble 👍🏻😁

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

40 strands wire is for power circuit or signal?

Thanks for the information! I'm not Pro , just love to DIY 😁
Learned some ideas from Seller, 1.5mm for normal appliances, 2.5mm for Appliances like Microwave and Oven.

The 4mm wires for Kitchen means? Sockets or Appliances?

Terminate to 3 pin socket

ceo684 can advise.

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.

I don't see how 0.16mm diameter strands can have the strength to withstand cable pulling. Maybe this type don't get pulled over long distances.

We usually use 7 strands cables with minimum 1.5 mm sq for power.

Is there zinc cable? I know of copper and aluminum.

Those are substandard size.. not even 1.5mm² for light circuit.. u can google the sizing
hence they are only used as device cord NOT permanent installation (which is the usual 1.5, 2.5, 4.0 kind of sizing)

They make horrible device cords if ur stripping using pliers (not a jig) as its too easy to cut thru the hair thin metal (if u wired LED lights u will know how annoyingly smol)

This post has been edited by ceo684: Jul 4 2022, 08:49 AM

In offshore projects, minimum power cable size is 2.5 mm sq though.

7 strands are due to withstanding termination crimping stress

Yes, 40 strands are not suitable for insulation wire strippers.

This post has been edited by New Klang: Jul 4 2022, 08:53 AM

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.

got, my ups use big fat zinc cable, connecting the battery.

Frankly this is obsolete standard from British era
Now no one in the world use anymore

I always use 70/76 standard.

There is only 2 type of material commonly used for cable construction, copper and aluminium. Zinc is just the coating.

oh then i might be wrong, saw the material, then do some google, found zinc, i tot its zinc.

I see! But we consumer, hard to differentiate, right?

What does SIGNAL means. For example?

Ya lo. When I asked options or suggestions from the store, they only mentions 1.5mm or 2.5mm. and most probably go for 2.5mm!

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.

For small cable/wire size < 6mm2, the manufacturer is more important. Some wire imported from China, the insulation will become brittle after few years, esp when exposed to UV. Pose a big risk for fire and electrocution.

Is the conductor insulated or metal coated?

I see! So, switch for lamps/lights consider Signal Cable?

Mega Cable means the Brand? If that's the name, a lot of people recommended Fajar Cable.

You always provided very Pro & Useful informations! Learned something 😁
Does it mean, no matter what's the purpose for, you'll always go for 2.5mm?

haha go for mega cable brand sir for best quality

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

This post has been edited by ceo684: Jul 19 2022, 11:34 PM

How abou wallt socket for Electric Stove (2500-3500w) ... Oven... Microwave? 2.5mm cable or 1.5mm is good enough?

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

This post has been edited by ceo684: Mar 9 2023, 09:17 PM

Appreciate your comments! You always awesome la 😁
Sorry, may I supposed to further describe! The Electric Stove means those "Portable" one, came with a Power Cord!

Oh? Double Socket needs a 4mm Cable?! Alamak, I fixed with 2.5mm Cable! Btw, it's so hard to apply a 2.5mm cable into a Double Socket already, can't imagine go with 4mm 😅 So, 2.5mm definitely not recommended?

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'

Ya lo. But the problem is , a lot of people said that although it mentioned Pure Copper but it may be Not! So? How to ensure? 🤣

"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.

Cool! Thanks for the idea! I still get stuck in here lately, especially the following 0.16. as you mentioned, 0.16mm for "each" strand, that means the very little thin copper in every LNE? At first I thought it's the size of each LNE, means Live cable 0.16mm and so on. 😅

So, in Malaysia we always mention Cable size in 1.5mm, 2.5mm, 4mm , right? But in US they called that AWG/Guage? In "mm" seems better way to understand ya.

Wow .. love it. Thanks for your efforts! Magnet seems the best way to check ya??