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We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 102 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 234 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 234 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 238 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 238 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/functions.php on line 106 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 443 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 443 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Критерии выбора кабеля для электропроводки или удлинителя » Статьи по строительству, ремонту, дизайну, интерьеру. Советы по стройматериалам

Критерии выбора кабеля для электропроводки или удлинителя Электроооборудование и электрика
Автор: admin | 11 апреля 2009 | Просмотров: 1270

Критерии выбора кабеля для электропроводки или удлинителя

Подвод электроэнергии к нужному месту в доме, на участке, а также использование переносных электроприборов, требует приобретения электрического кабеля, а к его выбору нужно отнестись серьезно во избежание опасных последствий.

Большое количество предлагаемых кабелей и разнообразие цен заставляет задуматься над тем, что же все-таки приобрести. Эта статья поможет Вам разобраться с техническими параметрами кабеля и избежать неприятных последствий его использования.

Прежде всего, нужно рассчитать допустимый ток по приведенному алгоритму.

1. Определите все самые мощные потребители, которые Вы будете одновременно подключать к этому кабелю (обычно, что-то одно).

Пример: К кабелю подачи электроэнергии в хозпостройку одновременно могут подключаться, водяной насос и электрорубанок (единичные лампы не учитывают ввиду их малой мощности см. Приложение 1).

2. Подсчитайте суммарную мощность этих электроприборов (она указана в техпаспорте и на наклейке).

Пример:

  • водяной насос – 0,6 кВт = 600 Вт
  • электрорубанок – 800 Вт
  • суммарная мощность = 600 + 800 = 1400 Вт (мощность измеряется в Ваттах)

3. Определите предполагаемый ток, разделив суммарную мощность на напряжение( 220 Вольт. По значению тока подбирается сечение жилы кабеля (см. Приложение 2).

Пример:

Предполагаемый ток = 1400/220 = 6,4 Ампера

Согласно Приложению 2. требуется кабель с сечением жилы не менее 0,75мм^2.

Но на этом выбор не заканчивается. Дело в том что электрические сетевые кабели характеризуются многими признаками.

У них бывает разное количество токоведущих проводников. Кабели из двух проводников используются в быту. Наличие третьего проводника обуславливается необходимостью заземления ряда электроприборов (компьютер, стиральная машина и др.). Остальные кабели требуются на производстве или имеют спецназначение.

По ряду использующихся материалов выделим медные и алюминиевые кабели. Проводник у медных может быть многожильным, что необходимо для переносок - он мягок и не переламывается при многократных деформациях. Алюминиевые кабели чаще одножильные, и подходят только для фиксированной проводки.

Кабели также подразделяют по количеству слоев изоляции.

Однослойные используют в сухих местах с невысокой температурой и располагают их на негорючей основе. Изолированные двумя слоями, подойдут даже для расположения на улице, под землей и т.п.

Приложение 1. Примерная мощность некоторых потребителей.

  • Электроплитка – 2000 Вт
  • Электрочайник – 1000 Вт
  • Микроволновая печь – 800-2000 Вт
  • Стиральная машина – до 2000 Вт
  • Электродрель – 800 Вт
  • Холодильник – 150 Вт
  • Телевизор – 100 Вт
  • Лампа – 100 Вт

Приложение 2. Стандартные кабели и их номинальный ток.

Сечение проводника (жилы) кабеля Ток
0,75мм^2 10 A
1,5мм^2 20 A
2,5мм^2 30 A
4мм^2 40 A
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