40 Amp

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FPE Circuit Breaker Federal Pacific 40 Amp 220v Stab Lok Type NC Thick
FPE Circuit Breaker Federal Pacific 40 Amp 220v Stab Lok Type NC Thick
$40.00
quality
ZINSCO Sylvania 220v 40 Amp
ZINSCO Sylvania 220v 40 Amp
$30.00
quality
NEW SQUARE D QIL240 40 AMP 2 POLE PLUG IN BREAKER
NEW SQUARE D QIL240 40 AMP 2 POLE PLUG IN BREAKER
$49.88
quality
Siemens Q23040CT2 30 Amp Double Pole 40 Amp Double Pole 10 Kaic Circuit Breaker
Siemens Q23040CT2 30 Amp Double Pole 40 Amp Double Pole 10 Kaic Circuit Breaker
$31.97
quality
Cutler Hammer BR240 C240 40 Amp 2 Pole 120 240 VAC Circuit Breaker Westinghouse
Cutler Hammer BR240 C240 40 Amp 2 Pole 120 240 VAC Circuit Breaker Westinghouse
$3.99
quality
Cutler Hammer CH CH140 40 Amp 1 Pole 120 240V Vac Circuit Breaker PLASTIC FOOT
Cutler Hammer CH CH140 40 Amp 1 Pole 120 240V Vac Circuit Breaker PLASTIC FOOT
$7.57
quality
Eaton BR140 Plug On Circuit Breaker 40 Amp
Eaton BR140 Plug On Circuit Breaker 40 Amp
$9.93
quality
Cutler Hammer 40 Amp 1 Pole CH140 Circuit Breaker METAL FOOT
Cutler Hammer 40 Amp 1 Pole CH140 Circuit Breaker METAL FOOT
$7.78
quality
FPE BREAKER NEF214040 40A A AMP 277Vac 1 POLE
FPE BREAKER NEF214040 40A A AMP 277Vac 1 POLE
$23.20
quality
WESTINGHOUSE CIRCUIT BREAKER 40 AMP NEW 480VAC 3 POLE EHB3040
WESTINGHOUSE CIRCUIT BREAKER 40 AMP NEW 480VAC 3 POLE EHB3040
$11.99
quality
3 pole 40 amp 480 277 240 e11592
3 pole 40 amp 480 277 240 e11592
$45.00
quality
7 GENERAL ELECTRIC 40 AMP 120 VOLT BREAKERS THQL 1140
7 GENERAL ELECTRIC 40 AMP 120 VOLT BREAKERS THQL 1140
$15.00
quality
ITE BQ bq3b04000S01 40 amp 3 pole circuit breaker
ITE BQ bq3b04000S01 40 amp 3 pole circuit breaker
$73.00
quality
GE GENERAL ELECTRIC 40 Amp 1 Pole Type R Circuit Breaker R140
GE GENERAL ELECTRIC 40 Amp 1 Pole Type R Circuit Breaker R140
$6.99
quality
Square D PowerPact FJA34040 3 Pole 40 Amp 480 Volt I Line Circuit Breaker
Square D PowerPact FJA34040 3 Pole 40 Amp 480 Volt I Line Circuit Breaker
$495.00
quality
MURRAY LW3040B1200 LOAD CENTER 30 SPACES 40 CIRCUITS MAIN BREAKER 200 AMP
MURRAY LW3040B1200 LOAD CENTER 30 SPACES 40 CIRCUITS MAIN BREAKER 200 AMP
$310.35
quality
MURRAY LC4040L1200 LOAD CENTER 40 SPACES 40 CIRCUITS 200 AMP MAIN LUG COPPE
MURRAY LC4040L1200 LOAD CENTER 40 SPACES 40 CIRCUITS 200 AMP MAIN LUG COPPE
$170.65
quality
MURRAY LW2040L1125 LOAD CENTER 20 SPACES 40 CIRCUITS MAIN LUG 125 AMP
MURRAY LW2040L1125 LOAD CENTER 20 SPACES 40 CIRCUITS MAIN LUG 125 AMP
$130.19
quality
CLEAN WADSWORTH A140 CIRCUIT BREAKER 1 POLE 40 AMP 120 240 VAC TYPE A STYLE 1
CLEAN WADSWORTH A140 CIRCUIT BREAKER 1 POLE 40 AMP 120 240 VAC TYPE A STYLE 1
$16.99
quality
BR140 Cutler Hammer Type BR Circuit Breaker 1 Pole 40 Amp 240V
BR140 Cutler Hammer Type BR Circuit Breaker 1 Pole 40 Amp 240V
$12.40
quality
2 SQUARE D QO340 3 POLE 40 AMP 240 VOLT BREAKERS
2 SQUARE D QO340 3 POLE 40 AMP 240 VOLT BREAKERS
$24.00
quality
NIB SIEMENS ITE CIRCUIT BREAKER EE3 B040 40 AMP 3 POLE 240 VAC EE3 B040 NEW
NIB SIEMENS ITE CIRCUIT BREAKER EE3 B040 40 AMP 3 POLE 240 VAC EE3 B040 NEW
$249.99
quality
FUJI ELECTRIC BU ESB3040 3 POLE CIRCUIT BREAKER 600 VAC 40 AMP
FUJI ELECTRIC BU ESB3040 3 POLE CIRCUIT BREAKER 600 VAC 40 AMP
$49.99
quality
Mar Lan 40 Amp Circuit Breaker 759350
Mar Lan 40 Amp Circuit Breaker 759350
$19.99
quality
SQUARE D QO340 3 POLE 40 AMP 240 VOLT BREAKER
SQUARE D QO340 3 POLE 40 AMP 240 VOLT BREAKER
$15.00
quality
x Siemens ITE 40 amp circuit breaker BQ2B040
x Siemens ITE 40 amp circuit breaker BQ2B040
$10.50
quality
Cutler Hammer HKD3400F Circuit Breaker400 Amp 3 Pole 600 V 40 DEGC USED
Cutler Hammer HKD3400F Circuit Breaker400 Amp 3 Pole 600 V 40 DEGC USED
$399.95
quality
FA34040 Square D SQD Type FA Gray Label Circuit Breaker 3 Pole 40 Amp 480V
FA34040 Square D SQD Type FA Gray Label Circuit Breaker 3 Pole 40 Amp 480V
$129.99
quality
SIEMENS ED4 3 pole 40 amp 480v ED43B040 Gray Blue Label Circuit Breaker ED
SIEMENS ED4 3 pole 40 amp 480v ED43B040 Gray Blue Label Circuit Breaker ED
$85.00
quality
THOMAS  BETTS 600 VAC 40 Amp 3 POLE CIRCUIT BREAKER FS360040A PULLOUTS Used
THOMAS BETTS 600 VAC 40 Amp 3 POLE CIRCUIT BREAKER FS360040A PULLOUTS Used
$55.95
quality
EATON CUTLER HAMMER CIRCUIT BREAKER FS340040A 40A 40 AMP A 3 POLE 480VAC
EATON CUTLER HAMMER CIRCUIT BREAKER FS340040A 40A 40 AMP A 3 POLE 480VAC
$52.00
quality
SQUARE D FDA FDA34040 3 POLE 40 AMP 480V CIRCUIT BREAKER
SQUARE D FDA FDA34040 3 POLE 40 AMP 480V CIRCUIT BREAKER
$195.00
quality
Square D by Schneider Electric HOM240GFIC Homeline 40 Amp Two Pole GFCI Circu
Square D by Schneider Electric HOM240GFIC Homeline 40 Amp Two Pole GFCI Circu
$128.88
quality
Square D Circuit Breaker 40 Amp 240 VAC
Square D Circuit Breaker 40 Amp 240 VAC
$20.00
quality
 SQUARE D 15 AMP 3 POLE CIRCUIT BREAKER CAT No 992315 WI 40
SQUARE D 15 AMP 3 POLE CIRCUIT BREAKER CAT No 992315 WI 40
$22.50
quality
Square D QO240 40 Amp 2 Pole 240 Volt Circuit Breaker Yellow NEW
Square D QO240 40 Amp 2 Pole 240 Volt Circuit Breaker Yellow NEW
$18.00
quality
FPE NA140 NA40 1 Pole 40 Amp Stablok Circuit Breaker WARRANTY
FPE NA140 NA40 1 Pole 40 Amp Stablok Circuit Breaker WARRANTY
$3.00
quality
GE THQB1140 40 AMP 120 VOLT 1 POLE Circuit Breaker WARRANTY
GE THQB1140 40 AMP 120 VOLT 1 POLE Circuit Breaker WARRANTY
$3.00
quality
LOT OF 2 Westinghouse BR240 2 Pole 40 Amp Common Trip Circuit Breaker
LOT OF 2 Westinghouse BR240 2 Pole 40 Amp Common Trip Circuit Breaker
$21.99
quality
SQUARE D HL 060 3 pole 40 amp 600v HLL36040LV PowerPact Circuit Breaker HLL
SQUARE D HL 060 3 pole 40 amp 600v HLL36040LV PowerPact Circuit Breaker HLL
$200.00
quality
PUSHMATIC ITE Bulldog 2 Pole 120 240V 40 Amp P240 Circuit Breaker
PUSHMATIC ITE Bulldog 2 Pole 120 240V 40 Amp P240 Circuit Breaker
$18.00
quality
 CROUSE HINDS 40 AMP 2 POLE CIRCUIT BREAKER TYPE MP MP240  AA 92C
CROUSE HINDS 40 AMP 2 POLE CIRCUIT BREAKER TYPE MP MP240 AA 92C
$5.99
quality
Eaton Cutler Hammer CL240CS Double Pole UL Class Circuit Breaker 40 Amp NEW
Eaton Cutler Hammer CL240CS Double Pole UL Class Circuit Breaker 40 Amp NEW
$9.99
quality
BR240 Cutler Hammer Type BR Circuit Breaker 2 Pole 40 Amp 240V
BR240 Cutler Hammer Type BR Circuit Breaker 2 Pole 40 Amp 240V
$8.99
quality
x Siemens ITE 40 amp circuit breaker BQD340 480 277 VAC
x Siemens ITE 40 amp circuit breaker BQD340 480 277 VAC
$84.00
quality
2pole 40amp shunt trip Cutler hammer circuit breaker BAB20408 2 yr warranty
2pole 40amp shunt trip Cutler hammer circuit breaker BAB20408 2 yr warranty
$59.00
quality
CUTLER HAMMER BAB1040S 40 AMP 1 POLE BOLT IN SHUNT TRIP BREAKER 2 yr warranty
CUTLER HAMMER BAB1040S 40 AMP 1 POLE BOLT IN SHUNT TRIP BREAKER 2 yr warranty
$79.00
quality
 CHALLENGER 40 AMP 2 POLE CIRCUIT BREAKER C240  YI 704
CHALLENGER 40 AMP 2 POLE CIRCUIT BREAKER C240 YI 704
$6.88
quality
EHD2040 Cutler Hammer Circuit Breaker 2 Pole 40 Amp 480V New In Box
EHD2040 Cutler Hammer Circuit Breaker 2 Pole 40 Amp 480V New In Box
$208.01
quality
SIEMENS 40 AMP 2 POLE CIRCUIT BREAKER D240
SIEMENS 40 AMP 2 POLE CIRCUIT BREAKER D240
$11.00
quality
40 Amp General Electric TED113040 Circuit Breaker 277VAC 1 Pole GE Nice Shape
40 Amp General Electric TED113040 Circuit Breaker 277VAC 1 Pole GE Nice Shape
$28.45
quality
GE 1 Pole 40 Amp Circuit Breaker M 1068
GE 1 Pole 40 Amp Circuit Breaker M 1068
$20.00
quality
Siemens Q240 40 Amp 2 Pole Circuit Breaker Type QP 240
Siemens Q240 40 Amp 2 Pole Circuit Breaker Type QP 240
$10.00
quality
Westinghouse 40 Amp Circuit Breaker Cat EB3040 240 V
Westinghouse 40 Amp Circuit Breaker Cat EB3040 240 V
$70.00
quality
GE THED124040 CIRCUIT BREAKER 40 AMP 480 VOLT 2 POLE FACTORY RECONDITIONED
GE THED124040 CIRCUIT BREAKER 40 AMP 480 VOLT 2 POLE FACTORY RECONDITIONED
$29.88
quality
Zinsco 40 amp RC3840 2p 40a 120 240v Circuit Breaker Used 1 year Warranty
Zinsco 40 amp RC3840 2p 40a 120 240v Circuit Breaker Used 1 year Warranty
$30.60
quality
FAZ CIRCUIT BREAKER G 40 A 3 POLE 40A 40 A AMP 220 380 AC
FAZ CIRCUIT BREAKER G 40 A 3 POLE 40A 40 A AMP 220 380 AC
$15.00
quality
NEW EATON CUTLER HAMMER CIRCUIT BREAKER JW3125V 3P 125A AMP SERIES C
NEW EATON CUTLER HAMMER CIRCUIT BREAKER JW3125V 3P 125A AMP SERIES C
$500.00
quality
WESTINGHOUSE QBH QBH3040 3 POLE 40 AMP BREAKER
WESTINGHOUSE QBH QBH3040 3 POLE 40 AMP BREAKER
$45.00
quality
Siemens ED43B040 40 Amp 3 Pole Circuit Breaker New In Box
Siemens ED43B040 40 Amp 3 Pole Circuit Breaker New In Box
$157.95
quality
General Electric TED124040 CIRCUIT BREAKER 40AMP 2POLE 480VAC
General Electric TED124040 CIRCUIT BREAKER 40AMP 2POLE 480VAC
$69.99
quality
Lot of 3 New Cerus Mini Circuit Breaker 1 Pole 40 Amp Din Rail Mountable
Lot of 3 New Cerus Mini Circuit Breaker 1 Pole 40 Amp Din Rail Mountable
$45.00
quality
NEW 100 Amp 20 Space 40 Circuit Indoor Main Plug On Neutral Breaker Load Center
NEW 100 Amp 20 Space 40 Circuit Indoor Main Plug On Neutral Breaker Load Center
$76.50
quality
Square D 40 amp Circuit Breaker FAL 34040 Used T O
Square D 40 amp Circuit Breaker FAL 34040 Used T O
$32.50
quality
SQUARE D FAL24040 2 P 40 AMP 240 VOLT CIRCUIT BREAKER
SQUARE D FAL24040 2 P 40 AMP 240 VOLT CIRCUIT BREAKER
$60.00
quality
LMLB1 1 51 40 0 1 01 V 40 AMP BREAKER CSI 470 407 10 NEW
LMLB1 1 51 40 0 1 01 V 40 AMP BREAKER CSI 470 407 10 NEW
$35.00
quality
Square D Cat QO340 3 Pole 40 Amp 240 Volt Circuit Breaker
Square D Cat QO340 3 Pole 40 Amp 240 Volt Circuit Breaker
$30.50
quality
Cutler Westinghouse BQC BRD BQ2402120 1 pole 20 amp 2 pole 40 amp quad breaker
Cutler Westinghouse BQC BRD BQ2402120 1 pole 20 amp 2 pole 40 amp quad breaker
$30.00
quality
Square D Homline 15  20  40 and 50 amp Breaker Lot All New
Square D Homline 15 20 40 and 50 amp Breaker Lot All New
$40.00
quality
Cutler Hammer CH240 Circuit Breaker 2 Pole 40 Amp 120 240V
Cutler Hammer CH240 Circuit Breaker 2 Pole 40 Amp 120 240V
$15.00
quality
Siemens 5SJ4118 7HG40 15 Amp 240 Vac 60 Vdc Circuit Breaker
Siemens 5SJ4118 7HG40 15 Amp 240 Vac 60 Vdc Circuit Breaker
$15.00
quality
SIEMENS ITE QT2 4040 EQ T 40 Amp Quad Breaker 120 240 V
SIEMENS ITE QT2 4040 EQ T 40 Amp Quad Breaker 120 240 V
$50.00
quality
1 NEW SIEMENS I T E BQ BQ3B040 CIRCUIT BREAKER 40A 40 AMP 3P 3 POLE 240V
1 NEW SIEMENS I T E BQ BQ3B040 CIRCUIT BREAKER 40A 40 AMP 3P 3 POLE 240V
$28.50
quality
GENERAL ELECTRIC GE CIRCUIT BREAKER TED136040 40A AMP 3 POLE
GENERAL ELECTRIC GE CIRCUIT BREAKER TED136040 40A AMP 3 POLE
$40.00
quality
GE Circuit Breaker Thin Double Pole 40AMPS 10 each
GE Circuit Breaker Thin Double Pole 40AMPS 10 each
$59.99
quality
1 NEW SIEMENS BQ BQ3B040 CIRCUIT BREAKER 40A 40 AMP 3P 3 POLE 240V 240 VOLT
1 NEW SIEMENS BQ BQ3B040 CIRCUIT BREAKER 40A 40 AMP 3P 3 POLE 240V 240 VOLT
$25.50
quality
Argus CBI DA3CA1 ND1ZXBL CS4000X 1 DDA130059 40Amp Circuit Breaker 1 pole
Argus CBI DA3CA1 ND1ZXBL CS4000X 1 DDA130059 40Amp Circuit Breaker 1 pole
$9.99
quality
Cutler Hammer FD3040 3 POLE 40 AMP 600 VOLT Circuit Breaker WARRANTY
Cutler Hammer FD3040 3 POLE 40 AMP 600 VOLT Circuit Breaker WARRANTY
$100.00
quality
ITE BQCH3B040 40 Amp3 pole 480 volt Circuit Breaker warranty
ITE BQCH3B040 40 Amp3 pole 480 volt Circuit Breaker warranty
$70.00
quality
Siemens ITE HED43B040 3 POLE 40 AMP 480 Circuit BreakerWARRANTY
Siemens ITE HED43B040 3 POLE 40 AMP 480 Circuit BreakerWARRANTY
$90.00
quality
Federal Pacific 40 Amp 2 Pole NC NC240 Stab Lok Circuit Breaker FPE Mini Twin
Federal Pacific 40 Amp 2 Pole NC NC240 Stab Lok Circuit Breaker FPE Mini Twin
$14.99
quality
GE THQL 2140 THQL2140 40 AMP 2 POLE 120 240 VAC CIRCUIT BREAKER SNAP CLIP IN
GE THQL 2140 THQL2140 40 AMP 2 POLE 120 240 VAC CIRCUIT BREAKER SNAP CLIP IN
$6.00
quality
 NEW SIEMENS 40 AMP 2 POLE CIRCUIT BREAKER D240  TYPE QO  US 25
NEW SIEMENS 40 AMP 2 POLE CIRCUIT BREAKER D240 TYPE QO US 25
$12.50
quality
Cutler Hammer Breaker Type BA 40A 40 A Amp 1 POLE Lot of 2 Used
Cutler Hammer Breaker Type BA 40A 40 A Amp 1 POLE Lot of 2 Used
$5.00
quality
MO 1908 GE TED134040 CIRCUIT BREAKER 40 AMP 480 VAC 3 POLE
MO 1908 GE TED134040 CIRCUIT BREAKER 40 AMP 480 VAC 3 POLE
$15.00
quality
Siemens BE240 40 Amp 2 Pole Equipment Ground Fault Circuit Breaker NEW
Siemens BE240 40 Amp 2 Pole Equipment Ground Fault Circuit Breaker NEW
$135.00
quality
SQD FA32040 3 POLE 40 AMP 240 VOLT I LINE Circuit Breaker
SQD FA32040 3 POLE 40 AMP 240 VOLT I LINE Circuit Breaker
$59.00
quality
MO 1909 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1909 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
MO 1910 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1910 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
LOT OF 2 FUJI ELECTRIC EG53FC CIRCUIT BREAKERS 1 40 AMP  1 50 AMP
LOT OF 2 FUJI ELECTRIC EG53FC CIRCUIT BREAKERS 1 40 AMP 1 50 AMP
$45.00
quality
 Westinghouse 40AMP 3 POLE BREAKER F FRAME  WA 59
Westinghouse 40AMP 3 POLE BREAKER F FRAME WA 59
$24.99
quality
SIEMENS 5SJ4140 7HG40 CIRCUIT BREAKER 40 AMP 240VAC 60VDC 235264
SIEMENS 5SJ4140 7HG40 CIRCUIT BREAKER 40 AMP 240VAC 60VDC 235264
$16.50
quality
MO 1911 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1911 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
MO 1912 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1912 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
MO 1913 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
MO 1913 GE TE122040 CIRCUIT BREAKER 40 AMP 240 VAC 125 250 VDC 2 POLE
$15.00
quality
 GE 40 AMP CIRCUIT BREAKER TED136040 3 POLE VB 91C
GE 40 AMP CIRCUIT BREAKER TED136040 3 POLE VB 91C
$74.99
quality
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40 Amp

40+Amp

Frequently Asked Questions...

How do I determine what gauge wire is attached to one of my breakers?

My central air unit requires 35 AMPs, an inspector said I have 10 gauge wire attached to a 40 AMP breaker and is making me replace the wire. The house is 8 years old, and the breaker has never been changed and has passed inspection when the house was built. My basement has been finished and to run a new wire from the breaker box to the unit is going to be nearly impossible. Any help would be great. I want to make sure the inspector is sure its 10 gauge...thanks


Best Answer...

Answer:

The nat elec code lists the wire gaufae for amps as follows
12 ga is to 20 amps
10 ga is it 30 amps
8 ga is to 40 amps
6 ga is to 65 amps

The inspector may have made a mistake but i doubt it. the current 8 ga wire is stranded because it is so thick While 10 ga is a single strand. It may have been wired wrong all along.


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