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Practical guides

Choosing, sizing and installing the right transformer: step-by-step guides with the calculations and the mistakes to avoid.

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  • September 2026latest article

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  • Guides8 min read

    Isolation transformer for boilers: the complete guide

    An isolation transformer for boilers gives the boiler a clean neutral and, with its tappings, brings a high supply back to about 230 V. How it works, which VA rating to choose, how to wire…

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