i would recommend http://tokai.com.my/solutions/esp.html they r the first company in Malaysia that started lightning & earthing industry. Developers nowadays want to maximise profit and save cost, so lightning protection installed by developers is very minimum.

Do you think this product will help? I heard any products also can't help when heavy lightning comes.

99% of houses in Malaysia don't have SPD. Developer will not add such additional cost unless it's an RM2mil and above property then slightly higher chance it will have the SPD.

Tokxx is big company working with developers, and expect big price from them as residential is not their key focus.

wow! that good. I plan buy 2 unit belkin surge protector when have internet later.

My contractor have install this for me when I request.

Hi Ozak,

Based on your past experience with surge protector, does it really work? I am thinking of "indoor - surge protection device" + "lightning conductor at rooftop and full earthing system"...what do you think?

Thanks in advance!

Thanks Ozak.

My house installed grounding rod...about 10-12 feet below the ground, it was near the DB area in my last renovation in 2015. But not sure how good is the grounding reading? How can we check ourself?

I received a quote to install a SPD (class 1) and grounding check at about RM1k, SPD (class 2) + groundimg check at around RM500.

I wish I can do DIY like you...cost saving

Anyone who understands what Ben Franklin did can understand what works.  The electric current goes from a cloud (ie 3 kilometers up) to earth borne charges (ie 4 kilometers distant).  Why is that complicated?  Either that electric current makes that 7 kilometer connection inside a building.  Or it makes the same connection outside via that earth ground rod.  It was always that layman simple - as first explained in primary school science.

Now, how good is that connection.  If lightning wants to use the building, then a lightning rod connects it to earth on a path that remains outside the structure.  No damage to a structure.

If lightning wants to use appliances inside a building, then a 'whole house' protector connects it to earth on a path that remains outside the structure.  No damage to appliances.  Why is that so hard?

If a protector's earth ground is not single point earth ground, then one has invited lightning to be inside - destructively via appliances.  Multiple earth grounds (ie plung another grounding rod at the garden side) makes appliance damage likely.  A surge, incoming on AC utility wires will use the other ground rod to connect to distant earthborne charges.  That connection will be destructively through appliances.

No protector does protection.  Without a good grounding in earth, the device will not work; will not be effective.  Because no protector does protection.  This is very hard for people educated by advertising.  A plug-in protector does not have that low impedance (ie less than 3 meter) connection to earth.  So it does significantly less or no effective protection.  And can even make appliance damage easier.  A protector must connect low impedance (ie hardwire has no sharp bends) to single point earth ground.  To the one and only earth ground electrode that all incoming utility cables connect to.

If any incoming utility cable does not first connect to that same earth ground (ie directly or via a protector), then appliance protection is compromised.

Lightning rods never make lightning strikes more likely.  That has always been an urban myth promoted by scammers who promote useless products such as ESE devices.  Lightning rods are always implemented everywhere that lightning damage cannot harm a building. That direct strike is going to happen with or without that lightning rod.  A building owner decides to let it strike the building or to connect to earth harmlessly via a lightning rod.    Only ESE scams and other outright lies deny what lightning rods have done successfully for over 250 years.  Connect the inevitable direct lightning strike to earthborne charges on a path that is not destructive.

If any of this is complex, then 1) it is new, and 2) one has not yet read it at least three times.  Even a genius never understand something new until after, at least, three rereads.  It may take more rereads if one was educated by lies from plug-in protectors, ESE manufacturers, advertising, wild speculation, or hearsay.

Why do we teach what Ben Franklin demonstrated in primary school science?  Concepts of lightning protection have alwaus been that simple.  However, if educated by lies (ie plug-in protectors), then comprehension is harder.  Unlearning those lies (from plug-in protectors or ESE manufacturers) makes learning challenging.

Protection is always about the path a current will take from cloud to earthborne charges.  Only a human makes that decision - to either have damage or to connect that current on a path that causes no damage.  We know this for both lightning rods and for protectors.  Both are only as effective as its earth ground electrode.  Facilities that cannot have damage routinely earth hardwire connections or protectors on a low impedance (ie hardwire must not be inside metallic conduit) path to single point earth ground.  Anything that does not connect that transient low impedance (ie less than 3 meters) to single point earth ground will never answer the relevant question.  Where do hundreds of thousands of joules harmlessly dissipate?  It is only hard when one has been scammed by advertising and myths that promote scams (ie plug-in protectors).

Wall 'power point' safety ground is not, cannot be, and never will be earth ground.  Difficult for many to grasp.  That wall receptacle safety ground is not and will never be an earth ground.  Better is even more electrodes at the same common point.  Protectors must have a low impedance (ie less than 3 meter) connection to single point earth ground.  Otherwise a protector does nothing useful.

The conventional design for a building lightning protection system is a rolling sphere approach with Franklin rods. The lightning rods at the highest points of the structure connection via 25x3mm2 copper tape straight down the structure to an 16mm dia min earth copper rod to an earth impedance of below 10 Ohm.
Sometimes your electrical supplier can advise you as these are standard JKR building design.

The minimum earth conductor is 10mm2 for a 40 Amp main incoming and 16mm2 for 63Amp mains. For residential design.

You can refer to the attached guidelines or to Malaysian Building By-Law 1988 for confirmation as  for me this all was a long time ago.

Hopefully I've uploaded the right attachement but note the Bahasa Malaysia version is the latest and my copy is an old code but should still be applicable.

Best wishes.

Yes, at the highest point and usually the TV and Radio antenna s are directly grounded. You will notice the tape around any government high structures or poles

Lightning protection is via copper tape is 25mnX3mm not 10mm2. The larger size to cater for lightning strike

DB home earthing can be a minimum 10mm2 pvc green wire
The sizing is calculated for the short circuit current
It's an estimate actually 

Yes many housing development do not bother as there isn't too many people aware of this code and how to check the DB earth's impedance.

Maybe it's all old school.

Nice to see brother Westom still around. Hahaha

Need some advice here..on SPD . 

I am lookin to install a SPD  surge device  at the DB box /single phase /63A    for  my landed house.

What kA  rating  shall  i chose ? 

i see in shopee  there is  20kA to 120kA  choice.
is chosing a 100kA  SPD better than  40kA

Thanks..

thanks  ..
the price  for 60kA  and 100kA  is about  98rm to 108 rm .
Any issues if i go for higher current capacity . 

https://www.lazada.com.my/products/schneide...3660056082.html?