# Is there any empirical formula for calculation of the size of a single phase power transformer

 Just for design purpose! asked 11/23/2011 leo3421

 I was talking about the dimensions of the transformer! answered 11/30/2011 leo342 1 You just need to estimate how much power you will need to supply by adding up each load connected to the transformer. I would then use a 70% load factor (i.e. required size = estimated load / 0.7). Updated: 2 December 2011 Sorry, assumed you were talking about capacity. When I need physical dimensions I tend to look up on a manufacturers website or in their catalogue. I'm not sure there is an empirical formulae. Hopefully someone into transformer design may see the question and give a better answer. answered 11/30/2011 Steven McFadyen 246

In order to provide an answer to this question, you must Login

## I am flagging this question because...

10 inform moderator flags remaining

## I am flagging this answer because...

10 inform moderator flags remaining

## Flagging a Post

You have already flagged this post. Clicking "Remove Flag" below will remove your flag, thus reducing the count by one as well.

## I am deleting this answer because...

IEC 60287 Current Capacity of Cables - Rated Current

In the previous note we looked at the approach taken by the standard to the sizing of cables and illustrated this with an example.  We then looked at one...

Three phase systems are derived from three separate windings, either connected in delta or star (wye). Each winding can be treated separately, leading...

UPS Battery Sizing

Various techniques exist to enable the correct selection of batteries for UPS applications.  The procedure described below is one of the more common. ...

Induction Motor Equivalent Circuit

Induction motors are frequently used in both industrial and domestic applications.  Within the induction motor, an electrical current in the rotor is induced...

Hazardous Areas – IEC and NEC/CEC Comparison

Depending where in the world you work, you are likely following one of two standards International Electrotechnical Commission (IEC) National...

Electromagnetic Compatibility (EMC)

Electromagnetic compatibility (EMC) is the study of coordinating electromagnetic fields give off equipment, with the withstand (compatibility) of other...

What does N+1 mean?

The term 'N+1' relates to redundancy and simply means that if you required 'N' items of equipment for something to work, you would have one additional...

Understanding Circuit Breaker Markings

IEC 60947 is the circuit breaker standard and covers the marking of breakers in detail. Any manufacturer following this standard should comply with the...

Harmonised Cable Codes and Colours

Within Europe the European Committee for Electrotechnical Standardization (CENELEC) has standardised the both the designation and colour of cables.   ...

How D.C. to A.C. Inverters Work

Traditionally generation of electricity has involved rotating machines to produce alternating sinusoidal voltage and current (a.c. systems). With the development...

Our website uses cookies so that we can provide a better experience.