Breaker sizing is very very important for safety, but often ignored by electricians due to lack of knowledge or oversized to avoid nuisance tripping. Here is the basic step-by-step procedure to determine the size of a circuit breaker: 1. Find the device's amps draw from label/nameplate/user manual/meter or else calculate the amp draw by dividing the wattage by volts. 2. Multiply amp draw by 1.25.The resulting amps is the minimum ampacity a correctly sized circuit breaker should have. 3. Choose a breaker which is nearest and higher to the commercially available size. 4. Select trip curve "B" or "C". (B is for resistive loads like heaters and C is for inductive loads which are mostly motorised loads like pumps, washing machine, fridge and AC), Example: Load is 1.5 ton inverter AC. Data as per nameplate is 230V, 1740W power and 8 Amps current draw. 1. Amps draw is 8. 2. 8*1.25 = 10 A. 3. As 10 Amps is commercially available we can choose 10 A rating. 4. As AC is motorised device it is an inductive load, we select C trip curve. So the matching breaker is C10. Note: 1. If we use C16 it wont trip during faults, resulting in fire. 2. The voltage between Neutral and Earth should be below 2V. If it is high earth pit should be wetted by watering. Dry earth pit is a poor conductor particularly during summer season. 3. RCCB trip rating should be 30mA and not 100mA. (100mA is not for domestic purposes but to avoid nuisance tripping electricians fit 100mA. The reason for nuisance tripping should be investigated and fixed. Simply using a higher rated RCCB is not the answer). 4. Dangerous practises: a)Don't cut 16A top and fit 6A for convenience. If 16A wall socket is not available at the device spot, please install it. b) Don't use extension cords with dummy earth terminal. Hope above points are helpful.
பேச்சாளர்கள் தமிழை இப்படி கேவலமாக உச்சரிப்பது கேட்க சகிக்கவில்லை. "ற்ற" "ன்ற" என்று வரும் இடங்களில் முறையே "ட்ற்ற" "ன்ட்ற" என்று உச்சரிக்காமல் தேவையில்லாமல் நாக்கு போட்டு சுழித்து "ட்ச்ச" "ன்ஜ" என கேவலமாக உச்சரிப்பது காரிதுப்பலாம் போல உள்ளது. தமிழ் இனி மெல்ல சாகும்.
Very useful tips. Thank you.
நல்ல தகவல்
👍👍👍 thank you sathiyam
Breaker sizing is very very important for safety, but often ignored by electricians due to lack of knowledge or oversized to avoid nuisance tripping.
Here is the basic step-by-step procedure to determine the size of a circuit breaker:
1. Find the device's amps draw from label/nameplate/user manual/meter or else calculate the amp draw by dividing the wattage by volts.
2. Multiply amp draw by 1.25.The resulting amps is the minimum ampacity a correctly sized circuit breaker should have.
3. Choose a breaker which is nearest and higher to the commercially available size.
4. Select trip curve "B" or "C". (B is for resistive loads like heaters and C is for inductive loads which are mostly motorised loads like pumps, washing machine, fridge and AC),
Example: Load is 1.5 ton inverter AC. Data as per nameplate is 230V, 1740W power and 8 Amps current draw.
1. Amps draw is 8.
2. 8*1.25 = 10 A.
3. As 10 Amps is commercially available we can choose 10 A rating.
4. As AC is motorised device it is an inductive load, we select C trip curve. So the matching breaker is C10.
Note: 1. If we use C16 it wont trip during faults, resulting in fire.
2. The voltage between Neutral and Earth should be below 2V. If it is high earth pit should be wetted by watering. Dry earth pit is a poor conductor particularly during summer season.
3. RCCB trip rating should be 30mA and not 100mA. (100mA is not for domestic purposes but to avoid nuisance tripping electricians fit 100mA. The reason for nuisance tripping should be investigated and fixed. Simply using a higher rated RCCB is not the answer).
4. Dangerous practises: a)Don't cut 16A top and fit 6A for convenience. If 16A wall socket is not available at the device spot, please install it. b) Don't use extension cords with dummy earth terminal.
Hope above points are helpful.
Thank you very much .
Good job 👍
TV munnadi vaikkalama
Its because of latest gas ,so change gas
👍
பேச்சாளர்கள் தமிழை இப்படி கேவலமாக உச்சரிப்பது கேட்க சகிக்கவில்லை. "ற்ற" "ன்ற" என்று வரும் இடங்களில் முறையே "ட்ற்ற" "ன்ட்ற" என்று உச்சரிக்காமல் தேவையில்லாமல் நாக்கு போட்டு சுழித்து "ட்ச்ச" "ன்ஜ" என கேவலமாக உச்சரிப்பது காரிதுப்பலாம் போல உள்ளது. தமிழ் இனி மெல்ல சாகும்.
Na karant adupu pakam vachiruken yetha aaguma
Yes, phone kuda fridge Mela vaikakudathu ,karant adupu vera place change pannidunga
நீங்கள் இன்னும் முழுமையாக தெரிந்துகொண்டு fridge'யை பற்றி பேசவும். தற்போது வரும் குளிரூடிகளில் கன்டன்சர் காயில் வெளிய வராது.
Yanga vtla 2008 la vangana fridge ethu yathavuthu aguma
no,super ra irukum
dont buy latest
@@hirthik_46 thank u
Adhuthan super old is gold. Nimmadhiya neenga irukkalam
Idarku orea vazhi naveena karuvigalai thavirkka vendum