vault backup: 2025-08-26 16:44:37

feeder-sizing.md

@@ -18,3 +18,32 @@ Code Making Panel 5 clarified that the equipment grounding conductor (EGC)
 never needs to be larger than the largest ungrounded conductor in any raceway
 when installed in parallel.
 I can not find a source to verify this.
+Statements from other reputable sources including Mike Holt
+are in contradiction to this idea.
+
+***
+
+Given a minimum ampacity, find all valid configurations.
+
+> [!cite] 310.10(H) Conductors in Parallel.
+> **(1) General.** Aluminum, copper-clad aluminum, or copper conductors,
+> for each phase, polarity, neutral, or grounded circuit
+> shall be permitted to be connected in parallel
+> (electrically joined at both ends)
+> *only in sizes 1/0 AWG and larger*
+> where installed in accordance with 310.10(H)(2) through (H)(6).
+
+Rank by total cost of install.
+
+## Complexity to Ignore
+
+### Conductor Material
+
+Tinned copper and copper-clad aluminum conductors
+can be assumed out of scope.
+
+## Complexity to Respect
+
+Wire and EGC conductors are usually assumed to match,
+but it is sometimes preferable to use a copper EGC
+with high-amp aluminum parallel feeds.