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Zane Meyers
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nfpa-70_310_conductors_for_general_wiring.md
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@@ -70,11 +70,11 @@ Insulated conductors shall comply with
> Thermoplastic insulation may also be deformed at normal temperatures
> where subjected to pressure, such as at points of support.
#### Table 310.4(A) Conductor Applications and Insulations Rated 600 Volts ^t310-4a
#### Table 310.4(A) Conductor Applications and Insulations Rated 600 Volts
%% TABLE OMITTED %%
#### Table 310.4(B) Thickness of Insulation for Nonshielded Types RHH and RHW Solid Dielectric Insulated Conductors Rated 2000 Volts ^t310-4b
#### Table 310.4(B) Thickness of Insulation for Nonshielded Types RHH and RHW Solid Dielectric Insulated Conductors Rated 2000 Volts
%% TABLE OMITTED %%
@@ -84,7 +84,7 @@ Insulated or covered grounded conductors shall be identified in accordance with
#### 310.6(B) Equipment Grounding Conductors.
Equipment grounding conductors shall be identified in accordance with 250.119.
Equipment grounding conductors shall be identified in accordance with [[nfpa-70_250_grounding#250.119 Identification of Equipment Grounding Conductors.|250.119]].
#### 310.6(C) Ungrounded Conductors.
@@ -314,23 +314,33 @@ Where correction or adjustment factors are required by 310.15(B) or (C), they sh
#### Table 310.12 Single-Phase Dwelling Services and Feeders
%% TODO: unpivot %%
Conductor (AWG or kcmil)
| Service or Feeder Rating (Amperes) | Copper | Aluminum or Copper-Clad Aluminum |
| ---------------------------------- | ------ | -------------------------------- |
| 100 | 4 | 2 |
| 110 | 3 | 1 |
| 125 | 2 | 1/0 |
| 150 | 1 | 2/0 |
| 175 | 1/0 | 3/0 |
| 200 | 2/0 | 4/0 |
| 225 | 3/0 | 250 |
| 250 | 4/0 | 300 |
| 300 | 250 | 350 |
| 350 | 350 | 500 |
| 400 | 400 | 600 |
| Service or Feeder Rating (Amperes) | Conductor (AWG or kcmil) |
| ------------------------------------ | ------------------------ |
| **Copper** | |
| 100 | 4 |
| 110 | 3 |
| 125 | 2 |
| 150 | 1 |
| 175 | 1/0 |
| 200 | 2/0 |
| 225 | 3/0 |
| 250 | 4/0 |
| 300 | 250 |
| 350 | 350 |
| 400 | 400 |
| | |
| **Aluminum or Copper-Clad Aluminum** | |
| 100 | 2 |
| 110 | 1 |
| 125 | 1/0 |
| 150 | 2/0 |
| 175 | 3/0 |
| 200 | 4/0 |
| 225 | 250 |
| 250 | 300 |
| 300 | 350 |
| 350 | 500 |
| 400 | 600 |
Note: If no adjustment or correction factors are required, this table shall be permitted to be applied.
@@ -398,7 +408,7 @@ Under engineering supervision, conductor ampacities shall be permitted to be cal
##### Equation 310.14(B)
$$
I = \sqrt{ \frac{T_{c} - T_{a}}{R_{dc}(1+Y_{c})R_{ca}} }
I = \sqrt{ \frac{T_{c} - T_{a}}{R_{dc}(1+Y_{c})R_{ca}} } \times 10^3~\text{amperes}
$$
where:
@@ -452,13 +462,14 @@ in accordance with the provisions of 110.14(C).
> [!info] Informational Note No. 4:
> For explanation of type letters used in tables
> and for recognized sizes of conductors for the various conductor insulations,
> see Table 310.4(A)
> and Table 310.4(B).
> see [[#Table 310.4(A) Conductor Applications and Insulations Rated 600 Volts|Table 310.4(A)]]
> and [[#Table 310.4(B) Thickness of Insulation for Nonshielded Types RHH and RHW Solid Dielectric Insulated Conductors Rated 2000 Volts|Table 310.4(B)]].
> For installation requirements,
> see 310.1 through 310.14
> see 310.1
> through 310.14
> and the various articles of this Code.
> For flexible cords,
> see Table 400.4,
> see Table 400.4,[[nfpa-70_400_flexible-cords]]
> Table 400.5(A)(1),
> and Table 400.5(A)(2).