Wire Cost: Difference between revisions
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*USE-2, RHW-2 and RHH - sunlight, heat, moisture resistant [https://www.performancewire.com/use-2-rhw-2-or-rhh/#:~:text=These%20wires%20are%20single%20conductor,%2Dlinked%20polyethylene%20(XLPE).] | *USE-2, RHW-2 and RHH - sunlight, heat, moisture resistant [https://www.performancewire.com/use-2-rhw-2-or-rhh/#:~:text=These%20wires%20are%20single%20conductor,%2Dlinked%20polyethylene%20(XLPE).] | ||
*Aluminum ampacity - 1/0 aluminum does 100A at 60C. '''Good chart of wire types and their T resistance [https://wire.buyawg.com/viewitems/all-categories-appendix-allowable-ampacities/sulated-aluminum-or-copperclad-aluminum-conductors]''' | *Aluminum ampacity - 1/0 aluminum does 100A at 60C. '''Good chart of wire types and their T resistance [https://wire.buyawg.com/viewitems/all-categories-appendix-allowable-ampacities/sulated-aluminum-or-copperclad-aluminum-conductors]''' | ||
*Terminations at panels must be rated at 60C - [https://diy.stackexchange.com/questions/212961/sub-panel-feeder-circuit-wire-sizing#:~:text=(1)%20Conductors%20rated%2060%C2%B0,C%20(140%C2%B0F).] - thus you must specify wire for 60C. For example, if you want 100A, oversize 100A 90C wire to something larger at whose 60C rating you get the required ampacity. | |||
=Cost= | =Cost= | ||
Revision as of 23:24, 15 May 2023
About
- NM-B house wire is specified for 60C by the NEC, but it can withstand 90C. [1]
- 2AWG is rated for 95A at 60C, 1 AWG is rated for 110 at 60C [2]
- USE-2, RHW-2 and RHH - sunlight, heat, moisture resistant [3]
- Aluminum ampacity - 1/0 aluminum does 100A at 60C. Good chart of wire types and their T resistance [4]
- Terminations at panels must be rated at 60C - [5] - thus you must specify wire for 60C. For example, if you want 100A, oversize 100A 90C wire to something larger at whose 60C rating you get the required ampacity.