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#1
03-14-2015, 07:41 PM
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9b-st and GFCI
I have a 9B-ST and when I plug it into a GFCI plug it immediately trips the breaker. Even before I press the power switch. When I plug it into a non-GFCI circuit, no problem. Anyone seen this before? I have had a 3b-st and 4b-sst2 on the same GFCI circuit with no problem.
In my area, when my house was built GFCI were newly required for bed/ bath. Maybe I just need a new GFCI in the breaker box that isn't so sensitive. It's just a minor convenience issue for me. I'm more curious to see if anyone has had this problem and found a solution. AQ. 
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#2
03-14-2015, 08:12 PM
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Sorry no help, as I don't use any GFCI outlets for my audio gear.
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Ivan FLORIDA MX136, MC1.2KW(10) MC2KW(2), MCD1100, MS750(2) MVP881, C1000C/P/T, MPC1500, HT-2 SUBS(2) HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) JL GOTHAM v2 SUBS(2) SILENZIO MUSIC SERVER, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" MOTORIZED SCREEN, CINEMA-TECH SEATING, WW PLATINUM CABLES Reference System: ACCUPHASE A300 AMPS, C3900 PRE-AMP, DP1000 CD/SACD TRANSPORT, DC1000 DIGITAL PROCESSOR, DG-68 DIGITAL EQUALIZER, T1200 FM STEREO TUNER, PS1230 POWER SUPPLY, HRS-SXR CUSTOM RACK w/ M3X SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WW PLATINUM CABLES CAPE COD MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K-01X 30th ANNIVERSARY (BLACK) SACD/CD PLAYER, G02-X CLOCK, HT3F(2) XRT2K, XCS2K, XR27(2) JL GOTHAM v2 SUBS(2) JL FATHOM F113v2 SUBS(4) SOUND ANCHOR STANDS(2) KALEIDESCAPE STRATO & TERRA SERVERS 80-TB, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO MUSIC SERVER, FORTRESS SEATING, WW PLATINUM CABLES Analog Rig: CLEARAUDIO INNOVATION WOOD, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, HRS-MXR REFERENCE RACK-GLOSS BLACK w/ M3X SHELVES, AESTHETIX RHEA SIG PHONO-PRE, BRYSTON BHA-1 HEADPHONE AMP, WW PLATINUM CABLES Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP, 948 POWER CONDITIONER, ACCUPHASE DG-68 VOICING EQUALIZER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, GRANDIOSO P1X/D1X STACK, G1X RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO MUSIC SERVER, HRS-SXR CUSTOM RACK w/ M3X SHELVES, SONUS FABER AIDA SPEAKERS, JL FATHOM F113v2 SUBS(2) SOUND ANCHOR STANDS(2) WW PLATINUM CABLES Library System: GRANDIOSO M1 MONOBLOCK AMPS, C1 LINESTAGE PRE-AMP, K1X CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E02 PHONO-PRE, SILENZIO MUSIC SERVER, AERIAL ACOUSTICS 20T V2, AERIAL SW12 SUBS(2), CANTON REF K1’s, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, KLAUDIO RCM, SHUNYATA DENALI 6000/S v2, SHUNYATA OMEGA QR’s, WW PLATINUM CABLES Esoteric/Bryston System: ESOTERIC C02-X PRE-AMP, P-02X TRANSPORT, D02-X DAC, G02-X CLOCK, BRYSTON 28B3 CUBED MONOBLOCK AMPS(4), BRYSTON BHA-1 HEADPHONE AMP, SHUNYATA DENALI 6000/S v2(2) EVEREST 8000 POWER CONDITIONER(2) ALTAIRA CG & SG HUBS, AMR-DP777-SE DAC, SILENZIO MUSIC SERVER, TAD REFERENCE ONE MK2 LOUDSPEAKERS, QUADRASPIRE RACK, WW PLATINUM CABLES Accuphase/Canton System: ACCUPHASE E800 INTEGRATED, DP570 CD/SACD PLAYER, T1200 FM STEREO TUNER, DG-68 VOICING EQUALIZER, PS530 POWER SUPPLY, CANTON REF K3’s, CANTON REF K5’s, SILENZIO MUSIC SERVER, HRS MXR REFERENCE MAHOGHANY RACK w/ M3X2 SHELVES, WW GOLD CABLES
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#3
03-14-2015, 08:58 PM
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aqman.......Ground Fault Circuit Interrupters (GFCI) are required on any outlet within 3 feet of a sink, tub or shower and any outlet in a damp or wet location such as outside or garages. The circuit breakers required by code within the past recent years for bedrooms is called an Arc-fault circuit breaker. These circuit breakers detect the presence of an arcing situation, often produced at an outlet when plugging in or unplugging a device under load. This circumstance causes an arc at the receptacle and triggers the Arc-fault circuit breaker to open.
My assumption from your description is that the circuit breaker is performing its designed task properly if it is an Arc-fault breaker. When you plug the 9B amp into the outlet it is most likely drawing current for the power supply transformers even though the power switch is off, although without a schematic for the power amp I am only guessing about that. It appears there is an arc being generated when you plug the amplifier into the outlet and the circuit breaker is performing properly. Check that the circuit breaker is an Arc-fault breaker and not a GFCI breaker. The work around is to turn off the circuit breaker, plug the amplifier into the outlet, then reset the circuit breaker. Let me know which circuit breakers we are actually taking about and their rating (15A / 20A).
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Dan  STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A Last edited by jdandy; 03-14-2015 at 11:24 PM.
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#4
03-15-2015, 02:05 PM
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Jdandy, you are right, it is a arc fault interrupt not GFCI and it is a circuit shared with a bedroom. Resetting the breaker while pugged in causes and immediate trip of breaker. Think there is any chance a different arc fault breaker would be less sensitive? Great reply BTW.
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#5
03-15-2015, 02:13 PM
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#6
03-15-2015, 02:39 PM
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Quote:
The 9BST amplifier has five separate power supply transformers. It will draw a substantial amount of current when first energized. If the circuit you are using has additional connected loads, there is a possibility you are drawing more current than the circuit breaker is rated to handle. It may be tripping the circuit breaker due to an overload and not an arc fault situation. Randy's suggestion is also worthwhile. Turn the circuit off, remove the trim plate on the receptacle where the amp is plugged, unscrew the top and bottom screws that hold the receptacle to the box, pull it out and double check that the screws where the wires are terminated to the receptacle are tight and also make sure any wirenut connections in the junction box are tight. You might also want to check that the two screws on the Arc-fault breaker where the hot wire and the neutral wires are terminate are tight. Be certain the circuit breaker is off when you check the tightness of these two screws.
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Dan STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A Last edited by jdandy; 03-15-2015 at 02:56 PM.
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#7
03-15-2015, 02:43 PM
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#8
03-15-2015, 02:59 PM
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__________________
Dan STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A
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#9
03-15-2015, 05:02 PM
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This is a 120 V unit. The AFCI is 15 amp. Same problem when I try a nearby receptacle on the same circuit. Nothing else is drawing load when I plug it in. On a non-AFCI 15 amp circuit, no problem. Right now I'm running to that with a high-current extension cord. The 9b power switch doesn't click in and out. When you you press it, it toggles. It starts in 'off' mode when you plug in.
I've also run it with just 3 channels and same issue. I'll save checking the receptacle for a rainy day since its behind various things. AQ
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