12V transformers - life
- Thread starter frediaz
- Start date
0.5mm is only rated 3A, but to do the math for the volt drop anyway 0.5mm from table 4H3B for a 60ºC flexiable cord gives a mV/A/m of 93.
0.093 x 4.17 x 2 = 0.78v. Taken as a % of 12v gives 6.5% which is too great.
0.093 x 4.17 x 2 = 0.78v. Taken as a % of 12v gives 6.5% which is too great.
1.0mm has a ccc of 10A not taking into account correction factors. It has a mV/A/m of 46.
0.046 x 4.17 x 2 = 0.38v. This gives a 3.2% drop which is acceptable (providing the circuit you are feeding the transformer from doesn't have an excessive volt drop.)
0.046 x 4.17 x 2 = 0.38v. This gives a 3.2% drop which is acceptable (providing the circuit you are feeding the transformer from doesn't have an excessive volt drop.)
RF Lighting said:
What amused me was the idea that it is necessary to put the transformer the same physical distance from each of the fittings to achieve equal brightness, when only the length of the cables need to be the same. The transformer can be left next to one of the fittings with the same length cables to each fitting.
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