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Whenever you’re buying an extension cord, AVR, transformer, or other forms of appliance protection; the common question asked would be “What’s your capacity requirement?”

The mistake most consumers make is they simply use their device’s indicated capacity (as seen in the device nameplate or instruction manual) to determine the capacity requirement of their device. However, to their surprise, their device keeps tripping or usually ends up overloaded (burnt appliance, blown fuse). This is because you used the wrong capacity requirement

The safest thing to do is to ask the seller/manufacturer the recommended capacity for your equipment as they would know best. However, if they are unable to respond to you – we’ve written this article to help you calculate the total capacity requirement of your devices, so feel free to use this as a calculator guide for AVR capacity, transformer capacity, extension cord capacity, and so on.

Step 1: Identify the Total Capacity requirements

Below Wattages are examples only, as actual capacity requirements will vary from brand to brand. Add up the capacity of the devices you plan to plug in. In this example, we are planning to plug in an LCD TV (250 Watts) and a Printer (50 Watts)

 

Step 2: Determine which Safety Margin formula to use

Two key points to highlight:

  • If you have the ampere and volts information of your appliance, it is preferable to use these two data points to calculate for the Total Capacity (Watts) consumption. We find that this tends to provide a more accurate representation of actual power consumption. The formula for Watts = Volts x Amps
  • If the information provided to you on the device or by the supplier is already in Peak Capacity terms, then there is no need to apply the additional 200% motor allowance as indicated above. Instead, you can use the devices without motor safety margin formula instead

For more information on the difference between Continuous Capacity and Peak Capacity, you can check out this article.

 

Step 3: Calculate the Capacity Requirement using the Safety Margin formula

Both LCD TV and Printer do not have a motor, so we’ll use the devices without motor safety margin formula

This means, if you want to run both devices at the same time, you will need an extension cord/AVR/transformer whose capacity is at least 375 Watts

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96 Comments

  1. Joanne

    What AVR should I use when may AC inverter 1 HP having Power of 760watts. Hope you can help me. Thank you.

    Reply
    • Panther Support

      Good day! For high powered equipment, we typically recommend you check with the manufacturer/supplier directly as they would be the most knowledgeable about the equipment’s actual power consumption. To be safe, we would assume that 760 Watts is your aircon’s average power, so you’d need a ~2300 Watts AVR to accommodate the startup power motor consumption. We hope this helps.

      Reply
  2. Nicanor R. Tomas

    How about an 8 cu ft inverter refrigerator? How will I compute it?

    Reply
    • Panther Support

      Good day! You’d need to check for the power consumption data of your refrigerator (preferably in amps). Once you have that data, simply multiply the amps by the voltage = average consumption. To take into account max power consumption, multiply the average consumption by 3. The value you get is then the AVR/transformer capacity you require for your refrigerator.
      We hope this helps!

      Reply
  3. Ramon

    Hi Sir please recommend the size of AVR if I will use 2 freezer on it?

    Panasonic
    Rated Voltage:230v
    Freq:60HZ
    Current:1.60 Amp
    Power Input:155Watts

    Whirlpool
    Rated Voltage:220V
    Freq:60HZ
    Current:0.8 Amp
    Power Input:120Watts

    Thank’s in advance sir.

    Reply
  4. Elmer

    What extension cord can I use for an electric range with oven

    Reply
  5. frederick

    HI Support, i have a 110V coffemakerwith a 1600 watts. what is the best AVR that i can use to power it up? Which is better transformer or an AVR to power up my coffemaker?

    Reply
    • Panther Support

      Good day! Yes, maximum watts is the same as peak capacity. A 750 Watts or 1000 Watts Step Down transformer would work for the Kitchenaid Mixer you mentioned, given a max watt of 590 Watts. We hope this helps!

      Reply
  6. Mike

    Hi, i have a 110v 1400w air fryer, which product will you recommend? Thanks

    Reply
    • Panther Support

      Good day! Please see our recommendations below, depending on your planned usage:
      a) If you will rarely use the air fryer, or use only for a limited amount of time (e.g. 15-30 minutes at a time), we recommend the PT 2000 – a transformer that will allow you to use your 110V device in the Philippines: https://panther.ph/product/pt-2000w-110v-step-down-transformer
      b) If you plan to use the air fryer regularly, or for long periods of time, then we would recommend the PVR 2000 – an AVR with built-in transformer that can protect your air fryer from voltage fluctuations: https://panther.ph/product/pvr-2000-relay-type-avr
      We hope this answers your question.

      Reply
  7. Alyssa

    Hi, what type of AVR should be used for a 1.5HP treadmill? Per Google research, 1.5HP is about 1200watts – is that correct? Also, for its plug, we are using a universal adaptor that says it’s 10A. Is that safe?

    Reply
    • Panther Support

      Good day! The average power consumption of 1.5HP treadmill is 1200 Watts, HOWEVER a treadmill is a motorized equipment so you would need to take into account the startup power consumption when choosing an appropriate AVR to purchase. Note that the standard measure is to multiply the average power consumption by 3 for motorized equipment -> which would mean you’d require an AVR capacity of ~3600 Watts maximum (~15A). This is a rough estimate only however. We do recommend you check with the treadmill manufacturer for these types of high powered equipment as they’d usually design it with power efficiency in mind, so the max power consumption could be lower.

      Regarding the type of AVR to be used, a relay type AVR would be sufficient for a treadmill.

      Regarding your question on the universal adaptor, a 10A adaptor might not suffice IF the max capacity is really 3,600 Watts. Again, kindly check with the treadmill manufacturer to confirm.

      We hope this helped clarify!

      Reply
  8. Jie

    Hi. May I know if it’s safe to plug in Rated 120W – 230V Refrigerator to 220V AVR Servo-Moor Control?

    Also, is a Microwave with Rated 1500W – 230V needs an AVR? We know that this has no Motor.

    What’s your recommendation?

    Reply
    • Panther Support

      Good day! Yes, it is safe to plug in a Refrigerator to a 220V Servo Motor Control AVR, provided your AVR capacity is sufficient (~500W should suffice if the rated ampere is less than 0.72A.
      For your microwave, if you only use it sporadically (e.g. less than 10 minutes at a time), then you don’t really need an AVR for it given minimal usage. However, if you use it regularly, then placing it with an AVR would provide voltage regulation protection. If that’s the case, we would recommend you use a 2000W AVR for the microwave.
      We hope this helps!

      Reply
  9. Taufik

    Hi there
    What type of AVR should be used for my Thermomix.
    220-240V
    50/60Hz
    Max 1500W

    Tq Sir

    Reply
  10. Neil

    Hi, I have a 0.8hp Inverter Window AC
    With rated power of 273w to 882w
    1.4A to 4.3A
    Since it’s a DC inverter Aircon unit, it has a soft start feature for the motor and no surge at startup.

    Would 1500VA be enough?

    Reply
    • Panther Support

      Good day! Based on your assessment of your DC Inverter Aircon (where you mention there is no surge at startup given the soft start feature), then 1500 VA could be enough. However, we do recommend you check with the AC manufacturer/supplier directly to be 100% sure, as they would know the design of their appliance best. We hope this helps!

      Reply
  11. Rowel Magpayo

    I have a 1 hp non inverter aircon… the input is 930 watts… what is the recommended avr that i will use?

    Reply
    • Panther Support

      Good day! For high powered appliances like aircon, we highly recommend you check with the manufacturer/supplier as the aircon might have power consumption savings design that we are not aware of. However, if we take the standard computation, you would need a 3000 Watts AVR. Alternatively, you could also consider the PVP 3500 (Voltage Protector): https://panther.ph/product/pvp-3500-panther-voltage-protector/
      We hope this helps!

      Reply
  12. Penelope Cruz

    Hello Support. We have the following items that we need AVR. What can you recommend?

    Inverter Refrigerator – 140 Watts
    Coffee Maker – 1600 Watts
    Coffee Grinder – 140 Watts

    Reply
    • Panther Support

      Good day! Please see below for our AVR recommendations:
      – Inverter Refrigerator: PVE 500 D . If possible, kindly check and make sure the ampere power consumption of the inverter refrigerator is below 0.7A
      – Coffee Maker: PVR 2000
      – Coffee Grinder: PVE 500
      We hope this helps!

      Reply
  13. Joy Saquing

    Hello! Which AVR do you recommend for 2 freezer?
    Panasonic freezer 165 watts
    Haier chest freezer 120 watts

    Thanks

    Reply
    • Panther Support

      Good day! Would you be able to provide the amps power consumption? This would be a more accurate basis to use when calculating for the recommended AVR capacity for your 2 freezers.

      Reply
  14. Jay G

    Hi, which AVR would you recommend for an Inverter Refrigerator with:
    Rated voltage: 230V
    Rated frequency: 60Hz
    Rated power input: 120W
    Defrosting power input: 160W
    Rated current: 1.5A

    Reply
  15. Jay G

    Can you pls show the calculation po and why PVE 1500 D is recommended for my comment above about the inverter ref. Thanks!

    Reply
    • Panther Support

      Good day! We based it off the ampere rating, which is a more accurate representation of the actual power consumption of your refrigerator.

      For your reference, the calculation is as follows:

      Watts consumption = Voltage X Ampere = 230V * 1.5A = 345 Watts
      As the refrigerator has a motor, we then apply an allowance for the startup power motor consumption = 345 Watts * 3 = 1,035 Watts

      Because of this, we recommend the PVE 1500 D. Kindly let us know if you have any other questions, thank you!

      Reply
  16. Richard Ryane Sebastian Ualat

    Good day, pwede ko bang iplug yung MICROWAVE OVEN ko na 1400 wattage sa AVR na 3000 watts capacity. Together with my Ref 900 watt capacity? Thank you.

    Reply
    • Panther Support

      Good day! Kindly check if the wattage you’ve provided are at max capacity, or if we still need to take into account the startup power motor consumption for the refrigerator. Let us know the ampere rating of the refrigerator, and we can then help you calculate if the 3000 Watts AVR is sufficient. We hope this helps!

      Reply
  17. Patrick Drnec

    My incoming power is 205 – 215 V due to distance from the transformer. My house has several individual aircon units at about 750W each, no more than 3 running at any time. We use electric water heaters for shower and kitchen sink, when they are used the lights dim. I have one freezer and one refrigerator.
    Would a 10KV AVR be correct to supply 220V reliably? 20 KVA?

    Reply
    • Panther Support

      Good day! Our understanding is you are looking for an AVR that would satisfy the needs of the entire house. We would recommend you consult your electrician for this, as you would also want to take into account wiring requirements, plus future power provision requirements. We hope this helps!

      Reply
  18. Cyril

    Is a 1500 wattage AVR enough for 5 units of pc?

    Reply
    • Panther Support

      Good day! Mostly likely it will not be sufficient. Kindly check the power consumption of each PC and add them up to check. 🙂

      Reply
  19. tenten

    Hi! I have a Midea Inverter Aircon the specs are as follows:
    Power Supply Ph-V-Hz: 1Ph,220-230V,,60Hz
    Cooling Capacity kj/h: 9,459 (2,160-13,770)
    Input W: 733 (250-1,310)
    Current A: 4.15 (1.08-5.70)
    EER Kj/W-h: 13.0 (8.64-13.0)

    and a Samsung rt20farvdsa Frost Free refrigerator with the following specs
    Rated power input: 100w
    Rated Voltage: 230V
    Rated Current 1.6A
    Rated frequency: 60Hz
    Energy Consumption: 0.77 kWh/24h

    Can you suggest what kind of AVR I can use separately for both items? Our area gets really bad fluctuations and power interruptions so I need help picking an AVR to use. Thanks in advance for your help.

    Reply
    • Panther Support

      Good day! Thank you for reaching out to us, and we’d be happy to help 🙂

      For your Midea Inverter Aircon: We would recommend the following AVR – the PVS 3000: https://panther.ph/product/pvs-3000-servo-motor-type-avr/
      However, take note that for high powered appliances such as these, we recommend you also check with the manufacturer/supplier as there is a possibility that the aircon has been designed to be power efficient, so you can potentially use a lower capacity AVR.

      For the Samsung Frost Free Refrigerator: We would recommend the following AVR given the 1.6A current and 230V rated voltage – PVE 1500 D: https://panther.ph/product/pve-1500-d-relay-type-avr/

      We hope this helps!

      Reply
  20. Isabel

    Hi what size AVR do I need for my refrigerator with the following details?

    230v~60Hz
    Rated current: 1.10A
    Input power: 110W
    Lamp rated power: 10W

    Reply
  21. Isabel

    Can you suggest the AVR I need for my massage chair and foot massager?

    Massage Chair
    Rate Input: 220-240V- 50/60Hz
    Power: 50w

    Foot Massager
    Input: 220-240V – 50/60 Hz
    Power: 50w

    Thank you

    Reply
    • Panther Support

      Good day! Given the specifications you have provided, we would suggest the PVE 500 for your massage chair and foot massager.
      Link: https://panther.ph/product/pve-500-relay-type-avr/
      However, we would suggest you check with your supplier as 50w power seems quite low for a massage chair and foot massager.
      We hope this helps!

      Reply
  22. Rob

    Hi, could you please advise what the most suitable AVR would be for an electric convection oven:

    Frequency : 60 Hz
    Voltage : 230V/60Hz/Single Phase
    Electrical Capacity : 3 kw

    This will be the only appliance connected to the AVR.

    Thank you!

    Reply
  23. Edwin Gocuan

    I have an LG 2.5hp split type AC where input is 1,490 watt and current 6.8 Amps while Max input is 2,300 watt and 9.9 Amps in 60Hz. What servo motor AVR do I need? 5000 w AVR? How much is this? This will be the only appliance used for the AVR. Thanks.

    Reply
  24. Edwin

    Hi Sir,
    Thanks for the prompt reply. You mean that a 3,000W AVR is suffice for my LG Split 2.5hp AC? If so, may I know the dimensions (height, length, width as well as weight) of both 3000W and 5,000W AVR so I can prepare a shelf for this? Also, may I know how much is the 3,000W and 5,000w AVR and how to order? Do you have stores here in Cebu City? Please advise.

    Reply
    • Panther Support

      Good day! Provided the maximum power consumption of your LG aircon is 2,300 watts, then yes. However, we would also advise you check with LG directly to be safe. We have sent a quotation with relevant details for PVS 3000 and PVS 5000 (Servo Motor AVR) to your email. To facilitate faster response, we will be responding to your queries via email instead. Thank you!

      Reply
  25. Rhen

    What size of AVR do i need for my bottom freezer inverter refrigerator?

    Rated Voltage: 220-240v
    Frequency: 60Hz
    Rated Current: 1.6 A
    Defrost Input: 150-178 watt
    Def Element Input: 150-178 watt

    Thank you!

    Reply
  26. Ana Gatmaitan

    Hi. Can you help me determine the right AVR size for a dishwasher with 1760 watts?

    Reply
  27. crister senapilo

    please help me choose avr with my aircon from u.s.
    110v
    465 watts
    60hz
    4.5amp
    1ph
    thanks in.advance

    Reply
  28. rdc

    for 2300 watts coffee machine…what is the best watts of avr we have to use for it

    Reply
  29. rdc

    Thank you so much for taking time to reply on my inquiry. I highly appreciate it. God bless you Panther 🙂

    Reply
    • Panther Support

      You’re very welcome! We look forward to serving you again in the future!

      Reply
  30. Cris D.

    Hi! What AVR would you recommend if I have a non-inverter aircon:
    230 v, 60Hz
    511 W
    Operating current: 2.3A
    Starting current: 6.3A
    Thanks!

    Reply
  31. Pedro E. Ybalane

    Hi, which AVR would you recomment for a two (2) powered speaker an Alto Professional TS 312, 2000-WATTS, 12″ 2-way powered loudspeaker, that is 50/60HZ, FUSE 220-240 V T5AL AC 250V, Powered Consumption of 800 W……..and 2 Alto Professional TS 212 S 1250-W 12″ Powered Subwoofer with an AC Input of 220-240V-50/60HZ, Fuse of 220-240V T3.15AL AC250V with a Power Consumption of 450W.?

    Reply
  32. Jojo

    Hi,

    Which AVR would you recommend for an inverter refrigerator with the following details:

    Rated power input: 100 watts
    Rated voltage: 230 V
    Rated current: 1.6 A
    Energy consumption: 0.77 kWh / 24 hours

    Appreciate your response. Thanks.

    Reply
    • Panther Support

      Good day! We would recommend the PVE 1501 D for your inverter refrigerator given the specifications you have provided.

      Reply
  33. Bong Masanque

    For my Portable aircon with 1.5 HP, can I use an extension instead of an AVR?
    Wattage: 1175 watts
    Voltage: 230 V?

    Reply
    • Panther Support

      Good day! Note that the extension cord and AVR provides different functions. The extension cord only serves to extend the outlet reach, so you can use your portable aircon even if it’s far from the wall outlet. On the other hand, the AVR provides 24/7 voltage fluctuation protection to protect your portable aircon from power issues such as overvoltage, undervoltage, and power surges. We hope this helps!

      Reply
  34. Auwie Faderanga

    Hi Sir please recommend the size of AVR if I will use 5 units of Dynatec D25 Adhesive Supply unit.

    Dynatec D25
    Rated Voltage:230AC / 3 Phase
    Freq:60HZ
    Current:30 Amp

    Whirlpool
    Rated Voltage:220V
    Freq:60HZ
    Current:0.8 Amp
    Power Input:120Watts

    Thank’s in advance sir

    Reply
    • Panther Support

      Good day!
      1) For your Whirlpool, we would recommend the PVE 1001 D AVR: https://panther.ph/product/pve-1000-d-relay-type-avr/
      2) For your Dynatec 25, kindly note that this would require a 3-phase AVR (Panther readily available AVRs are single phase only), and at a minimum would require a 7000 Watts AVR (if no motor) and potentially up to 20,000 Watts AVR (if with motor). Note that this is a rough estimate only. Given this is a high power consumption device, we highly recommend checking with the manufacturer/supplier to be sure.
      We hope this helps!

      Reply
  35. Rickson

    Hi Panther Team,

    I plan to purchase a 1000W servo-motor type AVR for my refrigerator rated at 253w (1.3A*230V) and for my smart TV rated at 155w. If I were to add the recommended buffer, the ref is calculated at 759W (253W*3 buffer) while the TV is calculated at 194W (155W*1.25 buffer), so a total of 953W. I wonder if I can pair both of these at the same 1000w AVR? Given that the TV is not a high-powered device.

    Thank you.

    Reply
    • Panther Support

      Good day! Thanks for reaching out to us! Yes, a 1000W AVR will suffice for both the refrigerator and the TV together. However, we would like to recommend the following points:
      1) A relay type AVR would suffice for a refrigerator and TV, given they are not sensitive equipment
      2) The refrigerator would require a power-on-delay protection, whereas the TV will not. However, if you plan to plug both in, then we would recommend going with an AVR with power-on-delay.
      The AVR we would recommend for your needs would be the PVE 1001 D: https://panther.ph/product/pve-1000-d-relay-type-avr/
      We hope this answers your question!

      Reply
  36. Tim Reyes

    Have a dual convection oven bought in the US and would like to ask what Panther product I need to buy to safely use it here in the Philippines. According to the specs wattage is 1800 watts. thank you in advance

    Reply
    • Panther Support

      Good day! Is the 1800 watts maximum power consumption? It would be better to provide us with the ampere and voltage information, as this would be a more accurate gauge of startup and continuous power consumption. From there, we can then recommend the appropriate transformer for you to purchase. We hope this helps!

      Reply
  37. Tim Reyes

    the oven is 110 volts. I can’t find the amperes but found in a site that the same model oven is 15 amps. for the purposes of computation using your formula, how do I know if this oven has a motor or not?

    Reply
    • Panther Support

      Good day! From our knowledge, most convection ovens would have motors. As such, we would calculate it as 15amps x 110 volts x 3 (accounting for startup) = 4950 Watts. Keeping this in mind, we would recommend the PT 5000 stepdown transformer so you can safely use your oven here in the Philippines: https://panther.ph/product/pt-5000w-110v-step-down-transformer/
      To be 100% sure though, we would also recommend checking with your supplier to understand (a) the actual ampere consumption, (b) if the design has a motor inside, and (c) if they have a recommended transformer capacity to ensure safe use.
      We hope this helps!

      Reply
  38. Victor H Ramos

    Hello! What would you recommend for my Peloton Tread. 120v, 60 Hz, 12 amps?

    Reply
  39. Victor H Ramos

    Hello! Thanks for the info on getting the right product. I have a stepdown with a 3 prong adapter and was told that in the Philippines it is completely safe to break off the ground prong to use it with our 2 prong outlet. Should I be concerned that our Peloton is a 3 prong going into the 110V of the stepdown with no ground from stepdown to plug?

    Reply
  40. Jhonas

    i have pve 1001 panther relay type. is it safe to use to my laptop with a charger of 300w 4.5A?

    Reply
    • Panther Support

      Good day, for a standard computer/laptop setup, the PVE 1001 should work well with it. However, the 4.5A rating seems very high for a laptop. Kindly check and make sure these specifications are correct, just so we can be sure with our recommendation as well. Thank you!

      Reply
  41. Pete

    Hello! Can I get a quick recommendation for our LG inverter refrigerator?

    230V/60Hz
    Rated current: 2.0A

    I’m a bit confused at it also included a few wattage in the specs:
    Defrosting input: 325W
    Rated input of lamp: 6.1W
    Rated input of heater sheath: 210W
    Rated input of L- cord heater: 105W

    Should I compute Watts as Amperes x Voltage, or should I sum up the listed Wattage?

    Reply
  42. Miles

    Hi! Goid day! My friend from US sent me a 110V /60 Hz / 1500 watts. garment steamer. What transformer should I purchase to be able to use it here in the PH? Also, should the transformer be with AVR also as there may be prolonged use of the steamer like up to 3 hrs?

    Appreciate your response. Thanks.

    Reply
  43. Erwin Malimban

    I have a PC with a 700w PSU and a 24 inch led ips monitor. What AVR would you recommend? Relay or servo type? Is 1000va enough?

    Reply
  44. Unknown Fat Person Who Want to Know Something!

    hello, want to ask what is recommended avr treadmill the specification of the treadmill is The T540’s motor power is 1.25 continuous-duty HP and 932 watts. Its average energy consumption is 395 Watts. do i need a servo panther avr 3000watts to run it with no problem? thanks in advance

    Reply
  45. Jeff De Leon

    is 1000w AVR good for below appliances?

    55 inches LED 155watts 1.25 193.75
    5.1 amplifier 165watts 1.25 206.25
    subwoofer 185watts 1.25 231.25
    sum 631.25

    Reply
    • panther admin

      Good day! Based on the wattage info, PVE 1001 D (provided these are 220-230V appliances) should be sufficient. However, best to check the ampere info to be 100% sure as those are typically more accurate when used in calculation. We hope this helps!

      Reply
  46. Dhex

    Good day sir!

    What Recommend AVR for Non Inverter Aircon 0.5 HP

    Reply
  47. Danny

    What AVR can you recommend or how many watts do I need for refrigerator with the following details:

    Fujidenzo
    Voltage:230v
    Freq:60HZ
    Climate Class: T
    Rated Current:1.9A
    Rated Defrost Power: 250W
    Refrigerant: R600a, 77g
    Storage Volume: 544L
    Lamp Rated Power: MAX 4W

    Reply
    • panther admin

      Good day Danny! Based on your given specifications, please consider at least 1500 watts AVR or higher, for sufficient allowance.
      Model: PVE 1501 D
      Price: P4,800.00
      Select Panther products are available in Handyman, True Value, All Home, Ace Hardware, DIY Hardware, MC Home Depot, Welcome Home Depot, Hardware Depot, Hardware Exchange, Workstation, Landmark, Metro Gaisano, Gaisano Malls, NCCC, and other retail stores nationwide.
      Lazada and Shopee official Panther Mall Stores.
      Shopee: https://shp.ee/4is2ysd
      Lazada: https://tinyurl.com/PantherLazada
      Hope it helps,

      Reply

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