Wire Cost: Difference between revisions
Jump to navigation
Jump to search
(→Cost) |
m (Fixed a Category Link) |
||
| (22 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
=About= | =About Service Entrance and SER Cable= | ||
*'''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] | |||
*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).] | ||
*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. | *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. | ||
*THHN to subpanel - yes if in conduit - [https://www.reddit.com/r/electrical/comments/j0iks3/can_you_wire_thhn_direct_to_a_sub_panel/] | *THHN to subpanel - yes if in conduit - [https://www.reddit.com/r/electrical/comments/j0iks3/can_you_wire_thhn_direct_to_a_sub_panel/] | ||
| Line 9: | Line 9: | ||
*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= | |||
*Since 2008, 4-wire cable is required. [https://structuretech.com/subpanels-when-the-grounds-and-neutrals-should-be-separated/#:~:text=Another%20way%20to%20wire%20a,have%20to%20be%20connected%20together.] | |||
*SER cable is preferred, no conduit needed [https://nassaunationalcable.com/blogs/blog/how-to-wire-a-subpanel#:~:text=Since%20non%2Dmetallic%20sheathed%20cable,options%20when%20wiring%20a%20subpanel.]. XHHW and THHN can be used but require conduit. | |||
=Cost= | =Cost= | ||
| Line 15: | Line 20: | ||
*2/3 NM-B is $9/ft [https://www.amazon.com/Southwire-63970802-SIMpull-Non-Metallic-Sheathed/dp/B0B8JRCW9C/ref=sr_1_1_sspa?hvadid=580531116618&hvdev=c&hvlocphy=9023314&hvnetw=g&hvqmt=e&hvrand=15868051116876183214&hvtargid=kwd-296459843720&hydadcr=2400_13458187&keywords=2+wire+romex&qid=1684194391&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzTExDWFJGVUVTOE5GJmVuY3J5cHRlZElkPUEwMDgyNzE5MzhPS0VZRFVBOE03RCZlbmNyeXB0ZWRBZElkPUEwNjU0ODczMzc2QzkyUlk5MDJDSSZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=] | *2/3 NM-B is $9/ft [https://www.amazon.com/Southwire-63970802-SIMpull-Non-Metallic-Sheathed/dp/B0B8JRCW9C/ref=sr_1_1_sspa?hvadid=580531116618&hvdev=c&hvlocphy=9023314&hvnetw=g&hvqmt=e&hvrand=15868051116876183214&hvtargid=kwd-296459843720&hydadcr=2400_13458187&keywords=2+wire+romex&qid=1684194391&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzTExDWFJGVUVTOE5GJmVuY3J5cHRlZElkPUEwMDgyNzE5MzhPS0VZRFVBOE03RCZlbmNyeXB0ZWRBZElkPUEwNjU0ODczMzc2QzkyUlk5MDJDSSZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=] | ||
*4/0 is same price - [https://www.menards.com/main/electrical/electrical-wire-cable/electrical-service-wire-cable/4-0-4-0-2-0-aluminum-urd-cable-per-foot/3692101/p-1473854610606-c-1525874617506.htm] or [https://www.wireandcableyourway.com/4-0-4-0-2-0-sweetbriar-underground-secondary-distribution-cable] | *4/0 is same price - [https://www.menards.com/main/electrical/electrical-wire-cable/electrical-service-wire-cable/4-0-4-0-2-0-aluminum-urd-cable-per-foot/3692101/p-1473854610606-c-1525874617506.htm] or [https://www.wireandcableyourway.com/4-0-4-0-2-0-sweetbriar-underground-secondary-distribution-cable] | ||
*1/0 aluminum 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] | |||
*{{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] | |||
=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]
