What size drill bit do you need for a piece of conduit?
Depends on the diameter of the conduit. Try for 1/4" larger diameter drill bit.
How do you put a 2 inch piece of condiut inside a half inch piece of conduit without altering the size of the conduit in any way?
Answer If you want to just make a hole for a screw in a piece of wood or metal all you need to is use a drill with a drill bit that is slightly smaller than the screw. If you make the hole the same size the screw will just pull out of the hole. Now if you want to make a hole in a piece of metal so that it has threads in it…
How much larger than the pipe size should the drill bit being used to drill holes in the floor joist be?
Wrong Question... You first determine the hole size required for the mine plan and then based on the air capacity and pulldown capacity of the drill rig you can determine the optimal drill pipe diameter to achieve productivity from the drill. What size is your drill? Air Capacity in CFM, Pulldown Capacity. What size does your drilled hole (diameter and depth) need to be to suit the mine plan (for the drill & blast process)?
When do you derate wires in conduit I know the code says more than 3 current carrying conductors but is there a length of conduit run when you should start to derate?
There are two things here to keep in mind. If you are trying to add more conductors to an existing conduit run use the cross sectional area of the conduit to see if more wires can be fitted. The second thing that's relates to length is the voltage drop at the load. To size the conduit work backwards from the load amperage to size the wires. If a long distance is involved a voltage drop…
The sizing of conduit systems that wire has to be pulled into is dependant on the physical size of the conductor being drawn into the conduit. The second governing factor is the conductor count of the specific conductor that is needed. A 500 MCM copper conductor with an insulation factor of 90 degrees C is rated at 430 amps. This is where the conductor count is need by the service, as to whether the service…
Is there a drill bit that can be used to cut sideways. I need to make a slot in a piece of metal that you could put a piece of flat stock 14 x 1 through?
no, drill bits do not have shear strength, so that technique would snap them. An end mill could do the job, or more practically, use a drill press, and plunge cut many holes, causing a slot in the material. Other option is use abrasives. A grinders, a cut off wheel, a carbide grinding bit etc to open the slot up to size
This depends on how many wires you need to put through the conduit. Typically you would figure out what size wire you need to handle a given load, and then find the smallest conduit you could possibly put those wires in. I'd actually need to know what type of conduit, also. Size your wire first, then your conduit. If you don't know how to size your wire, call an electrician. If you do it wrong…
What percentage is the maximum allowable conductor fill of any trade size conduit used as a raceway?
You could go to your local auto parts store and purchase a thread repair kit the correct size you are looking for. The kit will supply you with directions and what you need to replace the damaged threads with an insert of correct size for aprox $20. All you should need is an electric drill and drill bits.
You need to find out the size of drill bit you need - put the screw into a screw-bit rack and (going from the smallest to largest), the first one it fits in will be the right bit Then rill the hole, using a scrap piece of material (if appropriate) Then countersink the hole Finally, fit Hope this helped, I've got to do this for DT homework