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# Feeders

* Use 15ft adders for site runs
  (primaries, secondaries, etc.),
  as opposed to standard 10ft adder,
  to account for variability.

## Cable Support

> [!quote] 300.19 Supporting Conductors in Vertical Raceways.
> **(A) Spacing Intervals -- Maximum.**
> Conductors in vertical raceways shall be supported
> if the vertical rise exceeds the values in Table 300.19(A).
> At least one support method shall be provided for each conductor
> at the top of the vertical raceway or as close to the top as practical.
> Intermediate supports shall be provided
> as necessary to limit supported conductor lengths
> to not greater than those values specified in Table 300.19(A).

> [!cite] Table 300.19(A) Spacings for Conductor Supports
>
> | Conductor Size                   | Aluminum or Copper-Clad Aluminum | Copper |
> | -------------------------------- | --------------------------------:| ------:|
> | 18 AWG through 8 AWG             |                            100ft |  100ft |
> | 6 AWG through 1/0 AWG            |                            200ft |  100ft |
> | 2/0 AWG through 4/0 AWG          |                            180ft |   80ft |
> | Over 4/0 AWG through 350 kcmil   |                            135ft |   60ft |
> | Over 350 kcmil through 500 kcmil |                            120ft |   50ft |
> | Over 500 kcmil through 750 kcmil |                             95ft |   40ft |
> | Over 750 kcmil                   |                             85ft |   35ft |

## Sleeving

Provide sleeves for all feeder conduits passing through floors.

* ID.31 Hilti
    * P = Plastic => Concrete
    * M = Metal => Wood Frame
    * Round 1" to 2"