4 نقاط مستطيلة التركيب القياسية النموذج المحدد, قوس مع طريقة تركيب الثقب

An_enclosure_which_includes_mounts,_and_protects_such_items_as_switches,_circuit_breakers,_jacks,_fuseholders,_connectors,_terminals_and/or_terminal_boards,_resistors,_capacitors,_transformers,_and_the_like._it_is_primarily_designed_to_distribution_electric_power_from_one_or_more_primary_power_source(s)_such_as_generator(s)_and_battery(ies)_to_one_or_more_electrical_and/or_electronic_item(s)._it_may_include_a_cover_or_door._for_enclosures_which_ include_only_circuit_breakers,_switches,_jacks,_fuseholders,_terminals_and/or_terminal_boards,_see_circuit_breaker_box;_switch_box;_jack_box;_fuse_box_and_terminal_box._for_enclosure_designed_informily_infirmed_to_interconnect_two_or_more_electrical_and/or_electronic_items,_except_primary_power_source(s)_see_interconnecting_box._for_empty boxes_التي_هي_مصممة_لتركيب,_but_do_not_include_electrical_devices_such_as_switches,_ الرافعات,_fuseholders,_terminals_and/or_terminal_boards,_see_junction_box._see_also_interconnecting_cabinet;_control_(as_modified);_panel_(1)_(as_modified);_relay_assembly;_panel,_power_distribution; لوحة المفاتيح (بصيغتها المعدلة) واللوحة ، الصمامات. يستبعد:مفتاح الموصل.