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House Wiring Guidelines

I do a lot of new wiring for my properties. Usually I just hire electrician or civil contractors to do wiring without much thought whether the wires they used are suitable or not in term of ampacity (the maximum current the conductor can carry continously).

Until one day, one electrician told me the wires that I used for my fan and lamps are too thin to carry the current. It could pose fire risks. This is eyes opener.

Few days after I got the advise, one of new wiring was overloaded. The wires inside were burnt.

wires burnt due to overload - it is used for fridge and air fryer using 0.75mm wires — wires burnt due to overload – it is used for fridge and air fryer using 0.75mm wires

So I did my own studies as a guidelines to me, so when I hire an electrician I would know whether the wires and the way they connect to the electric power is able to support or no the possible current usage.

Guidelines on Wires Size

This is a guidelines only better check with your trusted or certified electrician.

If the same wire use for fan, lamps, fridge etc, you must add all the amperes and from the derive the required wire cross sectional area.

Of course usually, electrician will put extra buffer for the wire size.

Usage	Expected Power (Watts)	Expected Current (Ampere)	Expected Wire Size - Cross sectional area (mm2)	Advisable Connection Type
Ceiling Fan	75	0.3125	0.5	Direct / Plug
Aircond (1 HP)	750	3.125	1.5	Direct
Water Heater	3,600	15	2.5	Direct
Fridge (450L)	46	0.1917	0.5	Direct / Plug
Air Fryer	1,400	5.83	2.5	Direct
Lamps	75	0.3125	0.5	Direct / Plug
Washing Machine	500	2.083	1.5	Direct

Ampacity based on single phase

Connection Type

This is my own definition not electrician definition. There are two types of connection:-

Use plug to existing plug point
Tap direct into existing wires in plug point.

Use Plug

The maximum current is 13 ampere as the fuse can only handle up to that ampere.

Direct Loop to Existing Plug Point

This is better at maximum if not mistaken it is loop directly to existing cable of 2.5mm2 or supported maximum current of around 22 ampere.

What to Avoid For Wiring

Water Heater

For water heater, don’t use plug better use direct loop to existing wires. Especially water heater produces vapor that might cause short circuit and easily makes the wiring wear and tear faster.

What is Watt, Ampere & Volts?

Watt is power unit with formula as below:

Watt (W)= Amperage (A) x Voltage (V)

Analogy with water garden hose:-

Water come out from garden hose (watts) = Water volume (Amperage) x Water pressure (voltage)

What is Wire Cross Sectional Area?

It is actually the area size of the wire “circle”. In Math, the formula for area of a circle = pi*radius^2

For example, based on below diagram the cross sectional area calculation

cross sectional area = pi*(101.9/2)^2
                     = 3.142*50.95^2
                     = 3.142*2,595.9
                     = 8,156.3

cross sectional area = pi*(101.9/2)^2

= 3.142*50.95^2

= 3.142*2,595.9

= 8,156.3

Recommendation on Wire Size

Ligthing &amp; Ceiling Fan: 1.5mm2
Aircond 1.5HP and below: 2.5mm2
Adding new plug / power point: 2.5mm2

Ligthing & Ceiling Fan: 1.5mm2

Aircond 1.5HP and below: 2.5mm2

Adding new plug / power point: 2.5mm2

Recommended Wiring Contractor

Below is my recommended wiring contractor for Shah Alam or Kota Damansara area.

Azworld Tech (Azrin) – 0 17-376 0530

Appointment on time
Expert and reasonable charging

References

Formula Wheel Electrics – reference sengpielaudio.com

Wire Size - Cross sectional area (mm2)	Maximum Current (A)	Maximum Powers (Watts)
0.5	3	720
0.75	6	1,440
1.0	10	2,400
1.25	13	3,120
1.5	15	3,600
2.5	22	Can't find the information
4.0	30	Can't find the information

Ampacity based on single phase

Wire Size & Ampacity
Wire Size & Ampacity 2
Wire Size & Ampacity 3
Wire Size & Ampacity 4

Lowyat Forum Discussion on Wiring

How To Renew Indonesian Maid Permit In Malaysia Using MyEG in 2019

Easy Peasy,

Lemon Squeezy,

With MYEG,

Make life easy!

Haahaa.. This year, 2019 is my Indonesian helper 10th years in service. Not like last year (2018) this time, it was way easier to do permit renewal because I didn’t need to send her for FOMEMA check-up. steps for maid permit renewal

Since she just got back from her hometown for two months break, her work permit validity only left about one month.

To make things easy for us before she went back for her hometown, I cleared all the processes. Below is how to renew maid permit for 2019:-

Prepare employment contract with Indonesian Embassy.
Renew her passport. (Because to renew her work permit with immigration, her passport validity must no less than 3 months of expiry from her 1 year renewal term of work permit).
Transfer work permit sticker from old passport to new passport. (with cost).
Updating an immigration systems of all latest passport information and interlinked with MyEG for upcoming MyEG renewal process.

When she returned from her break, I only need to logon to MyEG service website and key in all the information for renewal with payment. That’s all!

2 bedrooms with balcony windmill genting highlands — Iklan

LOGON to MyEG services at www.myeg.com.my

Choose immigration and click at Maid Permit Renewal

Fill up all your details

Choose your collection method

Cost Involvement for Maid Permit Renewal

Total cost for Work Permit Renewal is RM610. Cost inclusive of Pass Charge RM60.00, Levy Charge RM 410, Visa Charge RM15, and Process Charge RM125.

Choose Your Payment Method. Make sure you disabled pop up blocker for this website for payment gateway to pass through.

At the end of transaction you will receive payment summary and if successful you can print your online receipt.
Keep receipt number so it will be easier for you to follow up if needed.
collection

What To Eat at Genting Highland- Delicious Thai Cuisines > choice#1

We have been making few staycation trips at Genting Highland just to have feel of living and enjoying view up the hills.

Within month of August 2019, we make 2 trips. Each stay around 2 to 3 nights using AirBNB booking facilities for homestay. Only one of the homestays provides induction stove for cooking which we decided not to spent time on cooking but just eat out and explore food places.

I will share one good place, we hunt for food up here.

Choice #1: NOK SOKMO GENTING TOMYAM – Restoran Masakan Thai dan Masakan Kampung

Location: Genting Permai, in front of GEO38 Condominium.

Latitude Longitude: 3.386584, 101.774920

This restaurant serving delicious halal Thai cuisines which most of the night time all tables are taken. Make sure you come early for dinner (before 7.30pm) so your order come quick and no need to wait for vacant table.

We ate few times there just because of its satisfying flavours and at affordable price.

Ordered same dishes were never bored for me laa. Hehehe. So this was the food that we ate repeatedly.

Ikan siakap masak tiga rasa at Genting Permai

Price range for all of the above within RM91 – RM94, with 5 bowls of plain rice and ice water or maybe with additional 1 or 2 glasses of teh tarik and kopi O. Food deliciously cook and worth the price. Cheaper for that 5-6 lauk.

It is cheap and good food especially in Genting now the food price is expensive.

You may explore other foods which they also serve ‘masakan kampung’. tapi belum try lagi sebab yang atas tu sedap sangat. ;P

OTHER MENU:

Masakan daging and seafood at Genting Permai

lain - lain specialty at Genting Permai — lain – lain specialty at Genting Permai

Detecting Similar Images

Use Case

I want to know programmatically whether listings posted at Mudah.My are similar or not even though it is posted by different persons and different date.

To do this, I think the best way is to detect whether the photos are similar or not.

Why To Know Same Property Is Advertised Over Period of Time?

I would like to know whether the property
1) price change over time, signalling time to purchase it
2) possibility owner becomes desperate to let it go if advertised for quite some time. So I can get better price

Same Property But Advertised by Different Agents and Different Date

All listings refer to same property by evaluating using naked eyes.
So now, I want to detect programmatically that all the listings are referring to same property by detecting those photos are similar.

Listing	Agent	Posted Date
Listing 1 URL Price: RM260,000	Dilla	05/07/2019
Listing 2 URL Price: RM260,000	Aiman	05/07/2019
Listing 3 URL Price:RM260,000	Norhayati	05/07/2019
Listing 4 URL Price:RM260,000	Fahana	05/07/2019
Listing 5 URL Price:RM260,000	Fazri	22/07/2019
Listing 6: URL Price:RM270,000	Marina	12/07/2019

Kitchen Photos

Seroja Apartment Listing 1 - Kitchen — Seroja Apartment Listing 1 – Kitchen

Seroja Apartment Listing 2 - Kitchen — Seroja Apartment Listing 2 – Kitchen

Seroja Apartment Listing 3 - Kitchen — Seroja Apartment Listing 3 – Kitchen

Seroja Apartment Listing 4 - Kitchen — Seroja Apartment Listing 4 – Kitchen

Seroja Apartment Listing 6 - Kitchen — Seroja Apartment Listing 6 – Kitchen

Bedroom Images

Seroja Apartment Listing 2 - Bedroom — Seroja Apartment Listing 2 – Bedroom

Seroja Apartment Listing 5 - Bedroom — Seroja Apartment Listing 5 – Bedroom

Technique Used

1. Step 1: Fingerprinting the Photos

Fingerprinting the photos is using image hashing technique. In this case, DHash will be used.

1. Step 2: Compare the Photos

After fingerprinting, image hash will be compared among listings. If the image hash are same or Levenshtein distance is less or equal to 2, then we can consider as the listings are referring to same property.

Results

Photos	Size	Noticeable Features	Image Hash (DHash)
Listing 1 - Kitchen	18KB 480x480	Kitchen - listing 1 ,listing 3 and listing 6 are similar	cc6c7a727e7c3e77
Listing 2 - Kitchen	19KB 640x480	Has door and wall fan	3f37333333333339
Listing 3 - Kitchen	18KB 480x480		cc6c7a727e7c3e77
Listing 4 - Kitchen	17KB 480x480	Kitchen - Listing 4 color is lighter compared to listing 1, 3 & 6	cc6e7a727e7c7e77
Listing 6 - Kitchen	18KB 480x480		cc6c7a727e7c3e77
Listing 2 - Bedroom	22KB 640x480	similar with bedroom listing 5 only size is different.	e1b90d0c8ccc84c1
Listing 5 - Bedroom	10KB 320x240		e1b52d0c8ccc84c1

Kitchen Photos

If we take Listing 1 as a base, we can say easily that it has same image hash with Listing 3 & Listing 6.

Listing 1 has Levenshtein distance of 2 with Listing 4.
Listing 1 has Levenshtein distance of 15 with Listing 5.

Bedroom Photos

Listing 2 and Listing 5 has Levenshtein distance of 2.

Conclusion

We can conclude photos are similar if their image hash is the same or their Levenshtein distance is less or equal to 2.

False Positive

What happens if different properties use same photos such as signage or building block? The algorithm will detect it as same property even though it is not.

To avoid this, we should establish a database of signage or building block to remove this false positive.

Photos Example

References:

Fingerprinting Images For Near Duplicate Detection
Python Code & Images Used
DHash Algorithm
Listing 1
Listing 2
Listing 3
Listing 4
Listing 5
Listing 6

Preparation for Drum Yamaha Grade 10 Examination

“TIME YOU ENJOY WASTING IS NOT WASTED TIME” – Marthe Troly-Curtin, Phrynette Married.

As a parent we need to educate our kids on how important for them to manage their time wisely. To get them to value time they need to be discipline.

I remembered during my younger age there was no electronics, gadgets or apps that could help to manage my schedule or alerted me to do a certain task. What I did was to prepare a scrapped book with tasks/ actions segregated by time frame on day to day basis. For example; at 5.oo – 5.30pm (watering plant & fold cloth), 6.oopm (shower) … felt guilty when didn’t follow it.

But these activities are more to routine and will become meticulous even though it’s important to be time conscious. So we focus on the time filling instead.

We introduced our boy to music lesson which he chose to play drum at first and permanently become his liking which he continuously attends to weekend class. He practices every day for at least 30 minutes to an hour.

We take step forward to measure his efforts in this field by registering him for Drum Yamaha Grade 10 Examination. We want to expose him playing in front of examiners and to develop his self confidence.

He practices nearly every day using his electronics drum. So far according to his teacher, he is able to do it.

hadeef yamaha drum grade examination session

Yamaha Grade Examination was held at YAMAHA centre in Kelana Jaya. Now we need to wait for the results which according to staff result will take around 1 month to be released.

Mom and Dad always Pray for you Hadeef! Best of Luck!

Yamaha Drum Grade Examination Explanation

Panasonic EcoNavi Aircond Not Working

Aircond Blows Hot Air

My Panasonic aircond recently just blowed hot air. I have Panasonic EcoNavi 1.5HP model CS-CU12PKH.

I asked my regular serviceman to check it. According to him, the compressor was broken and suggested to change to another compressor or new aircond which cost a whopping RM2,000. My Panasonic aircond is just 5 years old and I service it regularly.

Finding The Right Serviceman

I didn’t believe because the way he explained was not convincing and the way he checked didn’t have step by step troubleshooting. Furthermore if compressor is broken, the power will trip.

So I had to check for second opinion with many aircond servicemen. I explained the symptoms where the aircond blowed hot air, all the LED didn’t show any red lights but sometimes if I switch on the aircond it is cold but water was dripping.

To my dismay most of them couldn’t detect what possibly the aircond problems. They wanted to check and will charge me for going to my house if I didn’t replace any parts.

I personally doesn’t have confidence in them because for me if you are expert you could possibly have some hypothesis what went wrong.

Found The Solution

Fortunately I contacted Aircond Tech which I got their contact from Mudah.My. I explained to them the symptoms and they were able to zoom that possibly the sensor is broken. So I gave it a try and asked them to come to my house.

Aircond Tech came to my house and replaced my Panasonic aircond sensor and voila! It works. Now cold air is coming out.

Total repair cost is RM120 with 2 weeks warranty.

Observing The Outcome

Now I’m observing the repair works whether it is totally repaired. I notice that the aircond fan quiet strong and it keeps blowing cold air even though it is cold already. Last time, the aircond fan would slow down if the temperature is cold to the set temperature.

Nearly after 2 weeks, the aircond doesnt produce any cold air anymore. Again, I contacted Zul telling the problem. According to the technician possibly it is the capacitor this time.

So after replacing the capacitor the aircond becomes cold again!

But I feel uncomfortable to replace two parts in short time. I am wondering whether the sensor is really broken or actually it is the capacitor is broken at first place.

Total Cost of Repair

Sensor: RM120
Capacitor: RM120
Total: RM240

References:

Panasonic Copper Sensor cost RM15 at Shopee

Panasonic Aircond Model CS-CU12PKH

Tel: 60 11-1604 7175 (Zul)

Kangaroo Math Year 2019 Result

I encouraged Aliesha and Hadeef joined Kangaroo Math Competition (KMC). I want to give them exposure on problem solving and develop their interest in Math.

Based on Kangaroo Math website the result is categorized as below:

The allocation of percentage for participants in KMC is as follows:

Top 10% of participants from each category are the MEDALISTS.
From here, the top 1.3% will receive GOLD MEDAL, the next 3.3% will receive SILVER MEDAL and the remaining 5.4% will receive BRONZE MEDAL. Students wil also be awarded with certificates.
The next 40% of participants are the receivers of HONORABLE MENTION certificates.
The remaining 50% will receive the certificate of PARTICIPATION.
Grand Prix Award are rewarded to Gold Medalist students who scored the highest mark from each category.
Congratulations to all winners!

windmill genting highlands 6 pax 2 rooms with balcony — Advertisement

Lisha and Hadeef are both in Ecolier category.
Lisha managed to get Honorable Mention while Hadeef Certificate of Participation.

Full Results of KMC 2019

Aliesha Birthday Present To His Father for 2019

Lisha made a video for me for my birthday present which I appreciate it.