http://o141ca.livejournal.com/ ([identity profile] o141ca.livejournal.com) wrote in [community profile] useless_faq 2014-07-19 08:10 am (UTC)

цвета изолент - это "мощность" изолирующих свойств, для каждого напряжения свой цвет, желтый самый слабый, черная самая сильная, а синяя в районе 220 вольт, поэтому самая распространенная у нас
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