{"id":58,"date":"2020-01-13T13:40:34","date_gmt":"2020-01-13T18:40:34","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/basicmotorcontrol\/?post_type=chapter&p=58"},"modified":"2022-02-08T11:28:37","modified_gmt":"2022-02-08T16:28:37","slug":"conduit-fill","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/basicmotorcontrol\/chapter\/conduit-fill\/","title":{"raw":"Conduit Fill","rendered":"Conduit Fill"},"content":{"raw":"The [pb_glossary id=\"828\"]numbering system<\/strong>[\/pb_glossary] can also be used to determine how many wires will need to be pulled through the conduit to connect each device properly.\r\n\r\nConsider the following [pb_glossary id=\"796\"]control circuit<\/strong>[\/pb_glossary] and proposed conduit layout:\r\n\r\n[caption id=\"attachment_288\" align=\"aligncenter\" width=\"1024\"]\"\" A schematic diagram of a jog circuit utilizing a control relay and the proposed layout of the installation[\/caption]\r\n\r\nIf this is the proposed physical layout of the equipment, how many wires must be pulled through each piece of conduit?\r\n\r\nConduits \u201cA\u201d and \u201cE\u201d will have only the 3-phase power conductors in them. Conduit \u201cD\u201d will have the three power conductors as well as several control conductors. It is permissible for control conductors to share a conduit with power conductors provided their insulations share the same [pb_glossary id=\"718\"]voltage<\/strong>[\/pb_glossary] and temperature ratings.\r\n\r\nTo determine how many control circuit conductors will need to be pulled through each conduit, we apply the numbering system.\r\n\r\nFirst, number the wires in the [pb_glossary id=\"808\"]schematic<\/strong>[\/pb_glossary]. Each point that is [pb_glossary id=\"815\"]electrically common<\/strong>[\/pb_glossary] gets the same number. Jump up to the next number each time you go through a device or load.\r\n\r\n[caption id=\"attachment_287\" align=\"aligncenter\" width=\"1024\"]\"\" A numbered schematic diagram[\/caption]\r\n\r\nOnce the schematic diagram is complete, transfer the numbers of each device to their corresponding location in the [pb_glossary id=\"810\"]wiring diagram<\/strong>[\/pb_glossary]. Each point that has the same number needs a wire connecting them.\r\n\r\n\"\"\r\n\r\nKnowing the total number of wires to pull through a complicated run of the conduit is critical because adding wires afterwards can be impractical and difficult.","rendered":"

The numbering system<\/strong><\/a> can also be used to determine how many wires will need to be pulled through the conduit to connect each device properly.<\/p>\n

Consider the following control circuit<\/strong><\/a> and proposed conduit layout:<\/p>\n

\"\"
A schematic diagram of a jog circuit utilizing a control relay and the proposed layout of the installation<\/figcaption><\/figure>\n

If this is the proposed physical layout of the equipment, how many wires must be pulled through each piece of conduit?<\/p>\n

Conduits \u201cA\u201d and \u201cE\u201d will have only the 3-phase power conductors in them. Conduit \u201cD\u201d will have the three power conductors as well as several control conductors. It is permissible for control conductors to share a conduit with power conductors provided their insulations share the same voltage<\/strong><\/a> and temperature ratings.<\/p>\n

To determine how many control circuit conductors will need to be pulled through each conduit, we apply the numbering system.<\/p>\n

First, number the wires in the schematic<\/strong><\/a>. Each point that is electrically common<\/strong><\/a> gets the same number. Jump up to the next number each time you go through a device or load.<\/p>\n

\"\"
A numbered schematic diagram<\/figcaption><\/figure>\n

Once the schematic diagram is complete, transfer the numbers of each device to their corresponding location in the wiring diagram<\/strong><\/a>. Each point that has the same number needs a wire connecting them.<\/p>\n

\"\"<\/p>\n

Knowing the total number of wires to pull through a complicated run of the conduit is critical because adding wires afterwards can be impractical and difficult.<\/p>\n

definition<\/span>