Ang ganda ng lectures nyo sir, isa po akong RME BSEE grad, now ko lng po na spottan tong channel nyo,,, panunoorin ko po ito lahat, bkq makqtulong po itong channel nyo parang maging REE din po ako para sa aking pag Retake. Godbless po Sir.
Sir I'm so inspired discovering your channel first & foremost I thank God for using you as an instrument sharing a very nice talents with passion to both Electrical practitioners, I try also to refer MPHT to the aspiring REE & RME as well, I salute you Sir, to God be all the glory
Absolutely, 20 amps can handle that size of appliances, just a simple equation: Watt= Volts X Amps, W= V X A = 230 X 20 = 4600, X 80% = 3,680 watts/ 230 volts = 16 amps rating, 6 amps allowance for the inrush current or amp draw. No. 12 AWG is enough to handle that fractional motor rating. The amp draw if you are going to use a clamp meter, for the first few second the meter read the inrush current which is equivalent to LRA, but after the motor gets into the speed, amp draw will go back to the manufacturer nameplate specs. Assuming that everything are properly installed either a belt motor driven, the tension of the belt, the pulley either fixed or adjustable, amp draw will be drop to normal motor specs. The Philippines way is we have to get HP to Watt, we don’t do it since the amp rating from LRA, FLA are already specified at the nameplate, just be care about the voltage because you can connect it from low to high voltage. The rotations for three phase is just switching one of the three wires or some comes with a harness simple switching to switch rotations. Good job sir, keep up the good works.
Maraming salamat ulit Sir REGS. Buti nlng nabanggit mo po ung word na Not acceptable sa board exam , peru in practically, that is possible to use 20A. Napaka halagang bagay nun specially in board exams.. thank you po.
PEC not known to many was adopted from National Electrical Commission (NEC). The current table std in relation to voltage & hp rating is conservative. OEM tested their product accdg to test procedure international stds before it can be registered & to launch to market. In my considerable years of actual experiences, the wire ampacity shall not be smaller than the load to be served. Now here is the twist, protecting a motor load can only be achieved by an overload relay motor protection, soft starter, variable frequency drive or a motor circuit breaker combination built in 1 unit. OEM appliances such as airconditioning etch has a built in protection for its motor. The common saying "faulty wiring" during a fire accidents are bcoz of the ff: 1. Undersized wire ampacity, 2. Oversized fuse or circuit breaker 3. For old or aged establishment & residential wirings, deteriorated wire insulation. Heat & yrs of use can make the wire insulation brittle & crack that causes short circuits fire.
Good lecture, however, may I comment Sir. The load considered is an Aircon equipment. It is not the same as an ordinary motor. Aircon is a hermetic refrigerant motor-compressor which is under Article 4.40 it's not the same as the motor which is under Article 4.30. They have different considerations in calculating the conductor size and SC and ground-fault protection/OCPD or simply Circuit Breaker. For AC equipment like this the factor as per PEC is 1.75 not 2.50. That is the first rule, the 2nd option is 2.25, this is already maximum as per the code, but this is only used if the motor-compressor cannot start. Also if we have to check if in the nameplate of this Aircon are mentioned RLA-Rated Load Ampers, LRA-Lock Rotor Ampers and in some cases MCA-minimum circuit ampacity (usually greater than RLA). As per the PEC we have to use either the RLA or the Branch Circuit Selection Current, whichever is greater, in this case the MCA is greater so we have to use it. To calculate, 10A x 1.75 = 17.5 , standard CB is 20AT, next standard size so it is correct! Hope this helps Sir, thanks!
Gud am Sir, Mayron Akong 3hp elect motor at sa 30A safety breaker, Ang Tanong ko, ilan ampere sa push button on/of? Kasi ge drive ko sa pageling bigas..
Hi sir good day po ang galing mo po sir Ask ko lang po sa 30 amps na cb pwde po ba tatlong outlet? Para po sa aircon sa kwarto Para po sa Ref. Sa tindahan At para po sa washing machine sa kusina? Maraming Salamat po sir new subscribers po ako. Fr Singapore
Meron binigay na Aircon Ng anak ko ,3/4 ata ito,2.6 amperes ,rated current.at max.input 640 watts ,230 volts.window type .ilang amp.ang gamitin breaker? At size Ng wire.thanks
Puwede babaan ang circuit breaker mag ttrip naman ito kapag may issue ang motor. Ma pprotektahan pa sa pagkasira... 10A breaker ok na. Huwag babaan ang specs ng WIRE, kapag may issue motor - masusunog.
In that case Sir, if the load is only a 1HP aircon with the same wire size, will it be safe to add 1 or even 2 convenience outlets in the same circuit for a refrigerator and TV?
Probably you can add another wall outlet but the refrigerator, microwave oven, toaster, you better off not using the same circuit. Once the AC kicks in you can see the drop of the voltage from this circuit, lights flickering, but once the AC ramp it up that will go to normal voltage and amp draw. In other words appliances tend to draw more amp better off with a dedicated circuit. I advised you to use #12 AWG for 20 amp breaker, 15 amp could your lightning and some small household appliances. Simple equation: Watt= Volts X Amp W= V X A = 230 X 60 = 13,800 X 80% per NEC = 11,040 watts/ 230 volts = 48 amps allowable per NEC. Get all your appliances wattage and that’s how you can come up with wire sizing and circuit breaker. Hope this help
@@vicdesanti5264 I’m just make it sure I got your question correctly, you are asking about the surge of power during the start up, because usually the power surge we referred to during the utility grid turn off the power line or power line short-circuiting and blown up the transformer. When the power coming back that’s what we called power surge and if your appliances doesn’t comes with power surge protector could be toasted. Now the inverter or AC inverter comes with a compressor, once the system calling cool or heat if it is heat pump, would be normal to have an inrush current, have your multimeter set to inrush and you can see the readings, some may be more than the LRA which is 5 times on the normal amp draw of the equipment. Let us say your equipment nameplate specs is: Motor Amp= 2 amp, LRA is just almost 5 times amp draw, so we are looking at around 9.5 to 10 amps for a few seconds. Your circuit breaker are designed to handle that amp draw, not power surge, and back to normal. Your clamp meter can tell once you clamp one of the hot legs of the Li to T1, that’s why most of the equipment once there is a loss of power due to several reason doesn’t turn on automatically, mechanics like myself will have to turn it on manually. Our household appliances those expensive computers, sound system and anything worthy to spend extra power surge protector, are protected by this gadgets. My beer wine cooler mini fridge was a victims during the loss of power, relay to the compressor toasted when the power coming back, wasn’t that big deal because i have a lot of these parts as HVAC/R myself. One thing we have to look at too is the voltage coming from the utility grid especially during the peak hours of summer and the evening everybody’s turning on the lights, electric stove, neighbors shop has a welding machine, get your multimeter and measure during the peak hours. Thank you sir. Sa atin sir kailangan tingnan mo ang linya kasi ang talagang illegal tapping or magnanakaw ng kuryente, ngayon pag dating sa bahay mo mahina na, parang linya ng tubig maraming naka tap tapos wala ng pressure sa bahay. Now if you have ice maker in your fridge you just wondering why it takes time to make an ice even if your fridge has no refrigerant leaks. Kong may brownout sa lugar nyo turn your main power switch off and wait till the national grid put the power back, that way your very expensive appliances are protected from power surge.
Ang ganda ng lectures nyo sir, isa po akong RME BSEE grad, now ko lng po na spottan tong channel nyo,,, panunoorin ko po ito lahat, bkq makqtulong po itong channel nyo parang maging REE din po ako para sa aking pag Retake. Godbless po Sir.
Sir I'm so inspired discovering your channel first & foremost I thank God for using you as an instrument sharing a very nice talents with passion to both Electrical practitioners, I try also to refer MPHT to the aspiring REE & RME as well, I salute you Sir, to God be all the glory
thanks Sir for the Reminders to the standards as far as safety is concern, God bless you more
Ang galing mo magpaliwanag Sir.
Maliwanag pa sa sikat ng araw.
Absolutely, 20 amps can handle that size of appliances, just a simple equation: Watt= Volts X Amps, W= V X A
= 230 X 20
= 4600, X 80%
= 3,680 watts/ 230 volts
= 16 amps rating, 6 amps allowance for the inrush current or amp draw. No. 12 AWG is enough to handle that fractional motor rating. The amp draw if you are going to use a clamp meter, for the first few second the meter read the inrush current which is equivalent to LRA, but after the motor gets into the speed, amp draw will go back to the manufacturer nameplate specs. Assuming that everything are properly installed either a belt motor driven, the tension of the belt, the pulley either fixed or adjustable, amp draw will be drop to normal motor specs. The Philippines way is we have to get HP to Watt, we don’t do it since the amp rating from LRA, FLA are already specified at the nameplate, just be care about the voltage because you can connect it from low to high voltage. The rotations for three phase is just switching one of the three wires or some comes with a harness simple switching to switch rotations. Good job sir, keep up the good works.
Maraming salamat ulit Sir REGS. Buti nlng nabanggit mo po ung word na Not acceptable sa board exam , peru in practically, that is possible to use 20A. Napaka halagang bagay nun specially in board exams.. thank you po.
What if in worst case the motor will draw a current of 15 amps how the circuit breaker protect the motor?
Salamat Po Engr. daming natutunan namin sayu.
PEC not known to many was adopted from National Electrical Commission (NEC). The current table std in relation to voltage & hp rating is conservative. OEM tested their product accdg to test procedure international stds before it can be registered & to launch to market. In my considerable years of actual experiences, the wire ampacity shall not be smaller than the load to be served. Now here is the twist, protecting a motor load can only be achieved by an overload relay motor protection, soft starter, variable frequency drive or a motor circuit breaker combination built in 1 unit. OEM appliances such as airconditioning etch has a built in protection for its motor. The common saying "faulty wiring" during a fire accidents are bcoz of the ff: 1. Undersized wire ampacity, 2. Oversized fuse or circuit breaker 3. For old or aged establishment & residential wirings, deteriorated wire insulation. Heat & yrs of use can make the wire insulation brittle & crack that causes short circuits fire.
Power Kuya Regs 🥰👌
Good lecture, however, may I comment Sir. The load considered is an Aircon equipment. It is not the same as an ordinary motor. Aircon is a hermetic refrigerant motor-compressor which is under Article 4.40 it's not the same as the motor which is under Article 4.30. They have different considerations in calculating the conductor size and SC and ground-fault protection/OCPD or simply Circuit Breaker. For AC equipment like this the factor as per PEC is 1.75 not 2.50. That is the first rule, the 2nd option is 2.25, this is already maximum as per the code, but this is only used if the motor-compressor cannot start. Also if we have to check if in the nameplate of this Aircon are mentioned RLA-Rated Load Ampers, LRA-Lock Rotor Ampers and in some cases MCA-minimum circuit ampacity (usually greater than RLA). As per the PEC we have to use either the RLA or the Branch Circuit Selection Current, whichever is greater, in this case the MCA is greater so we have to use it. To calculate, 10A x 1.75 = 17.5 , standard CB is 20AT, next standard size so it is correct! Hope this helps Sir, thanks!
So! yong 2hp ok pala sa 20 amps breaker kawerpa?
Gud am Sir,
Mayron Akong 3hp elect motor at sa 30A safety breaker, Ang Tanong ko, ilan ampere sa push button on/of?
Kasi ge drive ko sa pageling bigas..
Hi sir good day po ang galing mo po sir
Ask ko lang po sa 30 amps na cb pwde po ba tatlong outlet?
Para po sa aircon sa kwarto
Para po sa Ref. Sa tindahan
At para po sa washing machine sa kusina?
Maraming Salamat po sir new subscribers po ako. Fr Singapore
Sir pwedi po magtanong kung saan tayo makakabili ng book mo na PEC
Sir yung tnatawag b na 380volts delta yun din b yung 3phase 220?salamat
Gd afternoon po sir
Meron binigay na Aircon Ng anak ko ,3/4 ata ito,2.6 amperes ,rated current.at max.input 640 watts ,230 volts.window type .ilang amp.ang gamitin breaker? At size Ng wire.thanks
IDOL, RICE MILL PLANT, POWER 30KW KAILANGAN PO BA NG TRANSFORMER, LINE TO LINE O LINE TO NEUTRAL PO BA ANG SERVICE LINE NA KAILANGAN
NEC CODE 12 AWG Ampacity is up to 30 Amp
Hindi po upto 20 amp breaker ang 12 awg.
Sir tanong lang Po ano Po Ang computation Ng kaic to circuit breaker salamat po
Puwede babaan ang circuit breaker mag ttrip naman ito kapag may issue ang motor. Ma pprotektahan pa sa pagkasira... 10A breaker ok na.
Huwag babaan ang specs ng WIRE, kapag may issue motor - masusunog.
sir paano po ba makabili ng PEC Book salamat po sir
👍👍👍👍🎖️
In that case Sir, if the load is only a 1HP aircon with the same wire size, will it be safe to add 1 or even 2 convenience outlets in the same circuit for a refrigerator and TV?
Probably you can add another wall outlet but the refrigerator, microwave oven, toaster, you better off not using the same circuit. Once the AC kicks in you can see the drop of the voltage from this circuit, lights flickering, but once the AC ramp it up that will go to normal voltage and amp draw. In other words appliances tend to draw more amp better off with a dedicated circuit. I advised you to use #12 AWG for 20 amp breaker, 15 amp could your lightning and some small household appliances. Simple equation: Watt= Volts X Amp
W= V X A
= 230 X 60
= 13,800 X 80% per NEC
= 11,040 watts/ 230 volts
= 48 amps allowable per NEC.
Get all your appliances wattage and that’s how you can come up with wire sizing and circuit breaker. Hope this help
@@julitolabor7086 Thank you po!
By the way, would your answer be different if I use an inverter aircon that has no surge ?
@@vicdesanti5264 I’m just make it sure I got your question correctly, you are asking about the surge of power during the start up, because usually the power surge we referred to during the utility grid turn off the power line or power line short-circuiting and blown up the transformer. When the power coming back that’s what we called power surge and if your appliances doesn’t comes with power surge protector could be toasted. Now the inverter or AC inverter comes with a compressor, once the system calling cool or heat if it is heat pump, would be normal to have an inrush current, have your multimeter set to inrush and you can see the readings, some may be more than the LRA which is 5 times on the normal amp draw of the equipment. Let us say your equipment nameplate specs is: Motor Amp= 2 amp, LRA is just almost 5 times amp draw, so we are looking at around 9.5 to 10 amps for a few seconds. Your circuit breaker are designed to handle that amp draw, not power surge, and back to normal. Your clamp meter can tell once you clamp one of the hot legs of the Li to T1, that’s why most of the equipment once there is a loss of power due to several reason doesn’t turn on automatically, mechanics like myself will have to turn it on manually. Our household appliances those expensive computers, sound system and anything worthy to spend extra power surge protector, are protected by this gadgets. My beer wine cooler mini fridge was a victims during the loss of power, relay to the compressor toasted when the power coming back, wasn’t that big deal because i have a lot of these parts as HVAC/R myself. One thing we have to look at too is the voltage coming from the utility grid especially during the peak hours of summer and the evening everybody’s turning on the lights, electric stove, neighbors shop has a welding machine, get your multimeter and measure during the peak hours. Thank you sir. Sa atin sir kailangan tingnan mo ang linya kasi ang talagang illegal tapping or magnanakaw ng kuryente, ngayon pag dating sa bahay mo mahina na, parang linya ng tubig maraming naka tap tapos wala ng pressure sa bahay. Now if you have ice maker in your fridge you just wondering why it takes time to make an ice even if your fridge has no refrigerant leaks. Kong may brownout sa lugar nyo turn your main power switch off and wait till the national grid put the power back, that way your very expensive appliances are protected from power surge.
@@julitolabor7086 Thank you!
Pwede po umorder Ng libro PEC.
Sir pwd mukaha ung mu may tnung lang po ako sir.salamat po
Dto maganda mg review s powerhouse araw araw Klang pumasok at mag aral pasado k talaga pg dating s exam