I will be remodeling our home in Philippines which uses 220v (two wire) service. I have purchased a 10,000 amp AVR transformer that will be hard wired into panel. On the back are lugs for input of 220v with two more sets of lugs one 110v and one 220v. I plan on installing three panels. First the main 220v panel - this would carry lights & outlets for two baths and 5 rooms. There will be 5 ceiling fans/w lights, led pot lights. The second panel will only be 110v circuits - two double outlets in kitchen, one outlet each bath, one in living room. Nothing continuous load or very high amps, biggest would be a blender in kitchen. The third panel would be separate of AVR for AC units only. My main question is the AVR heavy enough to carry the load of the house as planned?

Can you provide the make and model number of the transformer you mention? I need to see the specfications, as 10,000 amp AVR does not make any sense to me.

The transformer is a Multistar model V-AR 10000. Any help that you can provide will really help me. I have an idea of what I want to do but this is out of my field.

I am unable to find anything on the net for that brand and/or model #, can you find and send link?

I have another question for you. If I drew out and emailed you a floor plan and diagram of the wiring would you be willing to evaluate it and make suggestions for me? I would be willing to compensate you for your time. This is one area that I want to make sure it is right. My main goal is the regulate the power mostly to Fridge, fans (ceiling/bath), TV, and computers. The rest could be un-regulated.
Thank you for your prompt reply
My email: [email protected]

Transformers & Voltage Regulators : Step Up and Step Down Transformers (110Volt<==>220Volt)


view larger image
Seven Star THG10000
Input 110-220 Volt AC, Output 110-220 Volt AC, 10000 WATTS - Heavy duty type Step up & down transformer can be used anywhere in the world. This transformer is big & heavy in size and requires hard wiring, Power Transformers are used when an electrical device or appliance is taken from one country to another country with different power line voltage; they are designed with Heavy Duty voltage transformers for Continuous Use. These Models have been opened, thoroughly inspected mechanically and electrically to assure a quality product. Ideal for use with Copiers, Television Kitchen appliances Office machines & equipment also Refrigerators & Air conditioners (Be Sure to select Correct Amps/Watts) before using.

Product Specification:

Unit Dimension: 10.5”H x 10”W x 14”D
Unit Weight: 74 Lb.
Shipping Weight: 78 Lb.
Capacity: 10000 Watts
Product Type: Stepup Stepdown Transformer

This is on the Seven Star model but is the same. The one that I got is a AVR also and better quality.

10,000 watts should be enough capacity for the kitchen, bath, and living room outlets, but, why for AC units?

Why not just get 220 volt AC units?

Depending on the size AC, you may need a larger KVA, or watts, transformer.

Just post your sketch here, so we all can review and help.

Here is a floor plan with some notes on it. I want a separate panel for AC and Hot water heaters that does NOT go through AVR/transformer. The main circuits I want regulated are the ceiling fans, TVs, 110V outlets, lights, and 220V outlets.
The water heaters 2ea can draw up to 3.5kw each. This is why I'll put these and AC units on non regulated circuits.

Attached Images

Electrial system floor plan.pdf (697.3 KB, 116 views)

Ele. Panels IN.pdf (439.9 KB, 141 views)

I thought the AC units would be 110 volts by this statement you made: "The third panel would be separate of AVR for AC units only."

Since the standard voltage there is 220, why the need for 110 ? Is the voltage and reliability that bad there?

The plans look fine, but why over the fridge? Here in the US, panels need clear access.

Thank you for looking over my plans. The voltage is that bad with lots of outages. Most ceiling fans/bath fans last only a year if lucky. We will have some 110V kitchen items (much better quality and cheaper) and maybe audio/TV equipment. Since I'm renewing the house and can wire for it why not? As for the panel placement I do not want them outside (my first thought) because of the very damp weather (raining season) and if it is done properly I hope not to need to access them that often. The AC and shower hot water units are high load and will be 220V.

OK now I understand the situation. Seems we in the USA take our power for granted. I hope we have helped you.