Wire Cost: Difference between revisions
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=About= | =About Service Entrance and SER Cable= | ||
*'''Aluminum | *'''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]''' | ||
*'''Copper Ampacity''' - 2AWG copper is rated for 95A at 60C, 1 AWG is rated for 110 at 60C [https://www.lapptannehill.com/resources/technical-information/ampacity-chart] | *'''Copper [[Ampacity]]''' - 2AWG copper is rated for 95A at 60C, 1 AWG is rated for 110 at 60C [https://www.lapptannehill.com/resources/technical-information/ampacity-chart] | ||
*NM-B house wire is specified for 60C by the NEC, but it can withstand 90C. [https://www.menards.com/main/electrical/electrical-wire-cable/indoor-electrical-cable/12-2-type-nm-b-cable-with-ground-wire/sku3691335/p-1474478926948-c-6441.htm] | *NM-B house wire is specified for 60C by the NEC, but it can withstand 90C. [https://www.menards.com/main/electrical/electrical-wire-cable/indoor-electrical-cable/12-2-type-nm-b-cable-with-ground-wire/sku3691335/p-1474478926948-c-6441.htm] | ||
*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).] | ||
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*Romex or BX wire can be run without conduit - [https://www.quora.com/Can-I-run-THHN-wires-through-an-attic-without-a-conduit] | *Romex or BX wire can be run without conduit - [https://www.quora.com/Can-I-run-THHN-wires-through-an-attic-without-a-conduit] | ||
**Romex goes up to 2 awg [https://wesbellwireandcable.com/blog/thhn-vs-romex/#:~:text=Romex%C2%AE%20wire%20is%20available,(AWG)%20to%202%20AWG.] | **Romex goes up to 2 awg [https://wesbellwireandcable.com/blog/thhn-vs-romex/#:~:text=Romex%C2%AE%20wire%20is%20available,(AWG)%20to%202%20AWG.] | ||
*1/0 is 0.32" diameter wire [https://www.google.com/search?sxsrf=ALeKk026QG9BbsZl0rNsBS9KmerMgczY_w%3A1602863734253&source=hp&ei=dsKJX6q8DJDYsAXHkpG4Cw&q=diameter+of+1%2F0+wire&btnK=Google+Search&oq=how+to+configure+nvidia+geforce+gtx+1650+super+on+linux+mint&gs_lcp=CgZwc3ktYWIQAzIFCCEQoAEyBQghEKsCMgUIIRCrAjoOCAAQ6gIQtAIQmgEQ5QI6DgguELEDEMcBEKMCEJMCOggILhDHARCvAToLCC4QsQMQxwEQowI6CAgAELEDEIMBOggILhCxAxCDAToFCAAQsQM6AggAOgQIABAKOgYIABAWEB46CAghEBYQHRAeOgcIIRAKEKABUMsQWOmzAWD8tAFoBnAAeACAAeQGiAGhS5IBDTExLjQ3LjMuMi42LTGYAQCgAQGqAQdnd3Mtd2l6sAEG&sclient=psy-ab&ved=0ahUKEwiqz4DcvLnsAhUQLKwKHUdJBLcQ4dUDCAk&uact=5] | |||
=Subpanels= | =Subpanels= | ||
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*1/0 aluminum URD is 100A and $2.50/ft [https://www.menards.com/main/electrical/electrical-wire-cable/electrical-service-wire-cable/1-0-1-0-2-al-urd-wire-per-foot/sku3692045/p-1444442902248-c-1525874617506.htm] | *1/0 aluminum URD is 100A and $2.50/ft [https://www.menards.com/main/electrical/electrical-wire-cable/electrical-service-wire-cable/1-0-1-0-2-al-urd-wire-per-foot/sku3692045/p-1444442902248-c-1525874617506.htm] | ||
*2/0 aluminum SER is $4/ft [https://nassaunationalcable.com/products/2-0-2-0-2-0-1-ser?variant=27475844694116¤cy=USD&utm_medium=product_sync&utm_source=google&utm_content=siraj&utm_campaign=siraj&gclid=Cj0KCQjwsIejBhDOARIsANYqkD2eLYP2KtAdbZ-OxBSDF5PEKag2APydjMDCHfaAI4rdHmVbHWr7IM0aAjltEALw_wcB] | *2/0 aluminum SER is $4/ft [https://nassaunationalcable.com/products/2-0-2-0-2-0-1-ser?variant=27475844694116¤cy=USD&utm_medium=product_sync&utm_source=google&utm_content=siraj&utm_campaign=siraj&gclid=Cj0KCQjwsIejBhDOARIsANYqkD2eLYP2KtAdbZ-OxBSDF5PEKag2APydjMDCHfaAI4rdHmVbHWr7IM0aAjltEALw_wcB] | ||
*{{check}}1/0 aluminum SER is 1.1" OD + $3/ft [https://nassaunationalcable.com/products/1-0-1-0-1-0-2-ser?_pos=2&_sid=f5b6d4b3b&_ss=r]. $4/ft after shipping for 32'. | *{{check}}Lowest cost option, easiest to install (holes, no conduit): 1/0 aluminum SER is 1.1" OD + $3/ft [https://nassaunationalcable.com/products/1-0-1-0-1-0-2-ser?_pos=2&_sid=f5b6d4b3b&_ss=r]. $4/ft after shipping for 32'. | ||
**$5/ft at Platt [https://www.platt.com/p/0069542/ser-service-entrance-cable-1-0-3-aluminum-1000/662927235561/1a3sergx1000] | **$5/ft at Platt [https://www.platt.com/p/0069542/ser-service-entrance-cable-1-0-3-aluminum-1000/662927235561/1a3sergx1000] | ||
=Breaker Integration= | |||
*We would like to use a 100A breaker for the [[Subpanel]]. Can the 100A handle 1/0 Aluminum? | |||
**Breaker: LB200 [https://www.leviton.com/en/products/lb200] | |||
**1/0 should fit [https://www.quora.com/Will-1-0-aluminum-wire-fit-in-a-100-amp-breaker] | |||
*2 hots+ neutral; ground runs from subpanel to main panel and is separate from neutral wire. Neutral to ground bonding occurs at the main breaker panel. | |||
[[Category: Energy]] [[Category: Housing and construction]] [[Category: Materials]] [[Category: Calculators, Quick References, and Tables]] | |||
Latest revision as of 21:22, 24 May 2023
About Service Entrance and SER Cable
- Aluminum Ampacity - 1/0 aluminum does 100A at 60C. Good chart of wire types and their T resistance [1]
- Copper Ampacity - 2AWG copper is rated for 95A at 60C, 1 AWG is rated for 110 at 60C [2]
- NM-B house wire is specified for 60C by the NEC, but it can withstand 90C. [3]
- USE-2, RHW-2 and RHH - sunlight, heat, moisture resistant [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.
- THHN to subpanel - yes if in conduit - [6]
- Standard practice - individual THHN through conduit or NM-B through stud holes [7]
- Romex or BX wire can be run without conduit - [8]
- Romex goes up to 2 awg [9]
- 1/0 is 0.32" diameter wire [10]
Subpanels
- Since 2008, 4-wire cable is required. [11]
- SER cable is preferred, no conduit needed [12]. XHHW and THHN can be used but require conduit.
Cost
- THHN 6 ga copper - $1/ft [13]
- 6/3 NM-B is $5/ft [14] or [15]
- 2/3 NM-B is $9/ft [16]
- 4/0 is same price - [17] or [18]
- 1/0 aluminum URD is 100A and $2.50/ft [19]
- 2/0 aluminum SER is $4/ft [20]
Lowest cost option, easiest to install (holes, no conduit): 1/0 aluminum SER is 1.1" OD + $3/ft [21]. $4/ft after shipping for 32'.
- $5/ft at Platt [22]
