new garage

[Robert V]

this is the third and last time i will try to post in this sight . i have a new garage built onto my camp 24x24 with a attached breeze way. camp is finished . so i will have to run for sub panel under ground 2" conduit 2224 ser or mhf wire 90 amp breaker in my 200 amp main panel with a 80 amp breaker in my sub panel. 80' feet under ground with approximately 100 'feet of run. lights and out lets . 240 volt air compressor not sure of the amperage. welder miller xl ac/dc amperage rating ac low 30-150 a ac high 40-235 dc 30-160 . table saw ,grinder . any help would be appreciated bob

 

[sberry]

What is it you want to know? Use MHF

 

[pattenp]

Any wire rated for a wet location can go underground in conduit, such as MHF, THWN, XHHW. SER is only allowed above ground. If using conduit from panel to panel you can use MHF but it is direct bury rated so you may pay a tad bit more for it compared to XHHW. XHHW will be purchased as individual wires in the sizes needed where as MHF comes as a preassembled cable.

Use a 100A main breaker panel for the sub, cheapest way to go. You may find just using a 60A breaker for the feeder breaker will be plenty. 60A breaker is cheap compared to a 80A or 90A.

 

[raco232]

What is it you want to know? Use MHF

I agree, kind of confusing to read.

 

[Robert V]

it took 3x to post what I did. I could post in the forum get to know you . but in this electrical forum I could not post with the default browser that I used from my msn web page tried Google chrome on third time and it went through it keep telling me that I was not logged in. Lowes south wire 2-2-2-4caluminum ser service entrance wire suitable for burial thank you bob PS $1.78 per foot

 

[Robert V]

I sure was wrong on the wire please disregard . you are right on the wire . you need a whole separate computer just to look up the descriptions mhf. mobile home feeder. my bad. thank you it looks like the big box stores do not carry it . I guess I need to go to a electrical supply store pay the big price . will keep looking on line . thank you bob

 

[david1122]

Thanks for sharing such helpful reason for electrical criteria, i am building new now a days, and it would help me out further, this is helpful and informative, keep sharing...






Get busy living or get busy dying

 

[pattenp]

Some Lowes and also Home Depot carry Mobile Home Feeder (MHF) in store, it may be 2-2-2-4 or 2-2-4-6. Do not buy URD it will be three black wires with one black having a yellow stripe. URD is only allowed for outside use, it is not to be run inside of a structure because it does not have a fire rating. MHF consist of 2 blacks, one black with white stripe and a green.

 

[Robert V]

ok . I talked to 2 electrical supply houses this morning . they both said to use 2-2-2-4 urd underground residential distribution. I asked them if it was ok to put in ground in conduit. they said yes .this wire will come out of my main panel and pass through my wall approx. 12 feet before it travels out side. then In conduit for approx. 80 feet to the back of the sub panel leaving the earth in conduit and up the back of wall to the back of the sub panel. outside .should I have told them that this wire will be in my house for approx12 feet before it goes out side . thank you bob

 

[Robert V]

ok talked to the electrical supply house again . and no you can not run urd in doors it is not jacketed but he said use liquid tight in the wall space and that would take care of the problem . you would just need a transition box from the liquid tight to the pvc pipe. thank you bob

 

[pattenp]

No, No, and NO. URD is not allowed inside per the NEC even if in conduit. You need to verify that the wire the supply house is talking about is just rated USE-2, which most URD is. If it also carries the RHH/RHW-2 rating then it can go inside. Neither URD or MHF has a jacket so it must be installed in conduit where inside a structure or exposed above ground.

Edit: You can use SER for the inside run and transition outside via a junction box to URD.

Read.... Look at ratings.
https://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheet15
https://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheet40

 

[Robert V]

ok so urd has to be in rigid conduit. not liquid tight right . No, No, and NO. URD is not allowed inside per the NEC even if in conduit. Neither URD or MHF has a jacket so it must be installed in conduit where inside a structure or exposed above ground. If it also carries the RHH/RHW-2 rating then it can go inside. so only if it carries the RHH/RHW-2 rating then it can go inside. so what is it.

 

[pattenp]

Sorry I'm not following what you are posting. URD is not allowed inside. Being in conduit Vs. liquid tight is not the issue. URD can be put in liquid tight or conduit but only if outdoors. If you want one solid piece of cable/wire to go from panel to panel in conduit or liquid tight or a combination of the two your choice of wires are MHF(USE-2/RHH/RHW-2), THWN-2, or XHHW-2.

Edit: For the sake of conversation, liquid tight is a type of conduit. I did not specify rigid conduit.

 

[Robert V]

Southwire 4/0-4/0-4/0-2/0 Aluminum Mobile Home Feeder Service Entrance Cable (By-the-Foot) Lowes $3.40 per foot no -2 listed. did not find any thing at home depot . just for spits and giggles . there is no building inspector where my house / camp is . could use 12-2 and no body would be the wiser.

 

[Robert V]

home depot. 500 ft. 2 Black Stranded AL XHHW Wire. $151.20 /each does not say-2

 

[pattenp]

Do you have a local Lowes or HD to go into and check what they have? You can also order it from here.... https://www.wireandcableyourway.com...e%20your%20way&utm_content=Wire%20and%20Cable

 

[Robert V]

yes . but you have to purchase it by the roll . both places within 1/2 hr.

 

[pattenp]

So you physically went to the stores? My local Lowes and HD sell the #2 MHF by the foot. Don't go by what you see on their website for in store if that's what you are doing.

 

[Robert V]

MHF consist of 2 blacks, one black with white stripe and a green. this can be run in conduit .and in a house/garage/building. but this URD with three black wires with one black having a yellow stripe. this URD is only allowed for outside use. I am heading north this evening and will go to home depot/Lowes. to buy conduit. if I see this mhf with 2 blacks and 1 black with white stripe and a green wire it is safe to use in conduit and indoors . thank you bob

 

[pattenp]

Yes, MHF with 2 blacks and 1 black with white stripe and a green wire is safe to use in conduit and indoors. To verify it's safe for inside use look for the markings on the cable as "USE-2/RHH/RHW-2".

 

[Robert V]

thank you

 

[Robert V]

ok so this is what I did. no mhf at my local Lowes ,home depot and two electrical supply stores would have to order . one electrical supply store did order it and when I went to pick up it was urd wire. so this is what I did. ser wire by south wire striped out side jacket of and removed the non jacked ground . 3 wires left all have a fire rating and moister proof according to the electric supply store and mike holt nec. the reason it can not be buried and in conduit is the ground. they consider the conduit to be a wet space. bought 1 wire at 100 feet and taped it with green tape to represent ground and taped it to the other 3 wires. now have 4 wires 1 with red stripe 1 black 1 with white stripe and 1 to be new ground all moister proof and with a fire rating . had to get this done so the job could continue. it is what it is no inspectors up there. its probably wrong. thank you for all the help bob .