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Wiring

A presupposition for effectiveness of the below instructions is the good screwing of the cables into the transformers.
Long wiring to the secondary of the transformers cause voltage drops because of big amount of current and the low voltage. The above
is absent if the cross section of the cable is right. The voltage drop and the estimation of the right cross section is estimated as :

 

metasx_sindes

U = output voltage
L = cable length in meters m
P = power load in Watts
Xx = cable inductance in m/Ω . mm² (meters/resistance . cable cross-section)
ΔU=Voltage drop
Α=cable cross-section

x = 57   m /Ωmm²  BRASS
x = 36  m/Ωmm² ALUMINIUM
x = 6   m / Ωmm² STEEL  

  

• For a 2m long cable and voltage drop less than 3%(0,36V) the recommended brass cable cross-section is:

 

metasx_paradeigma

• For 5m long, with cross-section of 1.5mm² cable and 50W load the voltage drop will be:

metasx_paradeigma2

• In case of conductors made of other material such as aluminum or iron as easily seen from the above formulas the voltage drop is increased and greater cable cross-section is required for the phenomenon prevention.

 
 
 
 
 
 

   

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