Yes 480 volt electric wiring can be run in emt conduit.
When exist a junction box EMT, conduit must be supported within 18 inches.
Yes it should be grounded
1/2 inch emt
EMT is electrical metallic tubing. In the electrical trade there are nominal sizes expressed as a standard size. To answer your question you must state the conduit size in either electrical terms or in standard size terms to get a conversion size.For example standard size 1/2" EMT has an actual diameter size of 3/4" and the 1/2"EMT connector for the 1/2" EMT conduit needs a 7/8" hole.Likewise with 3/4" EMT the actual outside diameter is 15/16" and the 3/4" EMT connector needs a 1-1/8" hole.
Another name for thin wall conduit is EMT (Electrical Metallic Tubing). It is a type of conduit made of steel that is commonly used for protecting and routing electrical wiring in commercial and industrial construction.
I always put the first EMT clip/strap 1 foot or 12 inches away from the junction box, then every 5 feet or so after that.
PVC is cheaper but is used differently. PVC is usually baried in ground and emt usually runs exposed. You can use PVC exposed if it is schedule 80 gray PVC electrical conduit. Schedule 40 is for under ground
Another name for thin wall conduit is EMT and stands for Electrical Metallic Tubing. The term thin wall is used to differentiate between two conduit systems, thin wall and rigid conduit systems.
It depends upon the construction of the building as to what type of electrical system is used. If the building is of a wood frame then ordinary home wiring system can be used. If the use of steel studs is involved then BX has to be used for the internal wiring. Where the cables come out of the walls to equipment, they have to be mechanically protected with conduit or flexible conduit. If the building is block or brick and the wiring system has to be installed on the surface, the system has to be conduit. If the installation is not engineered and no stipulation as to what type of conduit system has to be used, then go with EMT. EMT systems are labour and material wise cheaper than a threaded rigid system. To make the job look professional you need to hire someone that is good at bending EMT conduit. Ask to see other jobs that the contractor has done before letting out the contract.
Depends on the size of the conduit and the size of the wire.Allowable Conduit Fill CapacitiesSize and Type Of Conduit #14 Wire #12 Wire #10 Wire 1/2" EMT 12 9 5 3/4" EMT 22 16 10 1" EMT 35 26 16 1 1/2" EMT 84 61 38 1/2" PVC 10 7 4 3/4" PVC 18 13 8 1" PVC 32 23 15 1 1/2" PVC 80 58 36
In electrical terms it represents Rigid Steel Conduit. It is also known as Rigid Metal Conduit (RMC).This is not to be confused with Electrical Metallic Tubing (EMT) also known in the trade as thin wall conduit.