What size wire do I buy for my electrical service panel? The NEC answers...

This video shows what size wire to buy when installing or upgrading an electric service panel.

The type of wire to use in most instances is service entrance cable (SEC).

Since residential dwellings (houses) only use a single phase service, adjustment factors for more than 3 current carrying conductors should be ignored (unless you have more than 3 hot conductors in a raceway or conduit which is more than likely you don’t). If you feel as if ambient temperature may apply in your case, then you will have to perform a residential load calculation and apply the ambient temperature correction to your final tally. (Load calculations are not discussed on this video). Chances are this chart will apply to you unless you live in the south or southwest.

[Sparky-wwre]

For very high amp services, typically 400 amps and above, at least in the area I work in, it's fairly common to run parallel conductors instead of one very heavy cable especially if conduit is required.

[elwood_flip]

Hey brother nice vid.. I want to add that this table is with a 83% allowance factor 310.15(B)(7)(1) is the allowance... an if the service drop or service lateral takes the entire load of the dwelling from 100-400A then you may use the allowance..like you mentioned it was in 310.15 in previous cycles now in the 2020 it's back..✌🙏

[AWGCalculatorApp]

This is the table 310.12(A) for services above 100A

[get-the-lead-out.]

How do we know what size and type of conduit to use with each type of wire....I'm putting in an under ground service feed from the pole to the meter on the house and using 2awg for our 100amp panel. Anyone know if all states allow the homeowner to dig his own ditch from near the telephone pole to their electrical meter, lay their own conduit and electrical from their meter to the base of the pole, and then have the electrical company just connect power to the meter and then finish connecting the service from the base of the pole up to the power lines on it. I've seen recent videos of people doing it but they didn't say what state they're from for me to know if Ohio allows it

[tedlahm]

kcMil. Learned a new word ( acronym) with this information.

[Chrissers]

Is there derating if the cable runs through insulation?

[tejindersingh]

200 A panel using Rigid PVC conduit
Total area of the conductors- ?
Metric trade size Raceway/Conduit- ?
Imperial Trade size Raceway/conduit- ?

[Boogle]

Careful folks watching. This is old code.

[binks]

Question: can # 4 SOOW 600V rated be used for a 100amp sub panel? Thanks !

[pressurewashingandhoodcleaning]

Can i use 2 2 2 4 to run 125 amp from meter to service box?