USE, USE-2, and UF
Armoured cable is not rated for underground installations. You have to use a cable with a designation for direct burial or wet and damp locations.
This is a voltage drop question. A 300 MCM copper or a 500 MCM aluminium conductor will limit the voltage drop to 3% or less when supplying 200 amps for 450 feet on a 240 volt system. The cheapest of the two conductors would be the aluminium conductor. For direct burial is will have a ACWU 90 designation.
12/3 will work.
In conduit? direct burial? distance?
Answer for USA, Canada and countries running a 60 Hz supply service.Termination of direct burial wire is done as you would terminate any other set of wires. However, direct burial does not mean you can direct bury the terminations. The wire must be brought into a building by an approved method; or the wire must be brought into a box designed for burial, with the box accessible from the surface of the ground; or the wire must be brought into a piece of equipment that is partially buried and designed for that purpose.In no case should the wire reach a depth of less than the minimum required depth for the installation without being protected by conduit. And in no case should the wire enter a building without conduit unless installing UF cable is allowed without conduit in the installation.As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.Before you do any work yourself,on electrical circuits, equipment or appliances,always use a test meter to ensure the circuit is, in fact, de-energized.IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
wires with a U on them
Armoured cable is not rated for underground installations. You have to use a cable with a designation for direct burial or wet and damp locations.
This is a voltage drop question. A 300 MCM copper or a 500 MCM aluminium conductor will limit the voltage drop to 3% or less when supplying 200 amps for 450 feet on a 240 volt system. The cheapest of the two conductors would be the aluminium conductor. For direct burial is will have a ACWU 90 designation.
Sorry no, you need to look for "Direct burial/Outdoor" in the description.
There are cables approved for direct burial. These will have markings on them like USE or URD. There is no way to answer your question without knowing the specific type of cable you have. If it is not approved for direct burial and you decide to put it inside an underground conduit there are still regulations that apply. Underground conduit is classified as a 'wet' location, so the wire still must have the rating for wet locations. Not all types of wire do. If you are concerned that you may not have the correct wire, have a qualified electrician look at it. Don't try to dig it up to look yourself, especially if it is live! If the wire is not approved for direct burial, it will eventually corrode and fail. Since it is underground, there is little likelyhood someone will be hurt, but you will certainly be left in the dark!
Is30awg_wire_ok_for_direct_burial
UF cable(underground Feeder) Looks like romex, gray jacket. usually approved for direct burial. Check local electrical codes for burial depths, or if conduit is required. if conduit is required use THHN or THHN-2
Yes but not completely exposed to the elements. Look for Direct Burial/outdoor rated if it will be completely exposed to rain and sunlight.
Yes, conductors can be compression connected underground but under select circumstances. This process is used when direct burial conductors inadvertently get dug up by machinery You must use an approved splice kit for underground connections. These kits usually contain butt splice crimp connectors and an insulation package. The overall splice is then covered by a heat-shrink material that makes the whole splice waterproof. The electrical code does not allow butt splice connections in conduit runs. Direct burial of conductors in concrete is not allowed except for ufer grounding. No, you cannot use EMT and compression fittings, they'll corrode. You need to use electrical PVC underground and in concrete per the Code. As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.Before you do any work yourself,on electrical circuits, equipment or appliances,always use a test meter to ensure the circuit is, in fact, de-energized.IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
The conductor can be pulled into conduit and then buried but it is not certified for direct earth burial.
Conductors
Somewhere in California. Direct address is not approved for WikiAnswers.