Block heater trips GFCI - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Lounge (0) Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > Speciality Forums > Electrical
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Auto EscrowAuto LoansInsurance

Electrical Discuss anything related to OEM & aftermarket electrical devices including: stereos, speakers, video, batteries, starters, the body control module, lighting, etc.

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 02-09-2008, 11:32 PM   #1 (permalink)
jec
Diesel Enthusiast
 
Join Date: Jul 2005
Location: Cloudcroft, NM
Posts: 8
iTrader Score: 0 reviews

Block heater trips GFCI

The block heater on my 2005 LLY trips ground fault circuit interrupter outlets when plugged into them, but does not trip the circuit breaker on a conventional outlet. I measured the resistance at about 500,000 ohms from both hot to ground and neutral to ground. Anyone else have this problem?

Thanks,
John
__________________
2005 Chev XC K3500 SRW 4x4 D/A
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-10-2008, 12:48 AM   #2 (permalink)
jollyrogr
Diesel Specialist
 
jollyrogr's Avatar
 
Join Date: Dec 2006
Location: Iowa
Posts: 707
iTrader Score: 3 reviews

I think your GFCI simply can't handle the load. Use a non-GFCI outlet.
__________________
2004.5 Silverado 2500HD 4x4 EC/SB D/A LLY
Schaeffer or Mobil oil front to back / EGR blocked / 17x8 Ultra Rogue wheels / 265/70-17 Hankook RF10 rubber / LUX bose / Merchant Auto T-Case pump fix / EFI Live tuned by me / LBZ MP and RickDLance intake kit / Diamond Eye 4" quiet tone turbo back / ISSPRO EV2 pyro and boost in a Trippin mount/ Kennedy Diesel twin lift pumps / Nicktane fuel filter adapter with CAT 1R-0750
Offline   Reply With Quote Quick reply to this message
Old 02-10-2008, 12:49 AM   #3 (permalink)
Jeff9396
Diesel Technician
 
Join Date: Nov 2007
Posts: 372
iTrader Score: 0 reviews

Michigan Oil Burners Member

Very small amp draw on those gfci's, use non- gfci
__________________
2004.5 lly
-285's BFG's A/T's
-Autometer Phantom pyro/Boost gauges W/ Pillar
-4" MBRP turbo back
-EGR blocker plate
-MA pump rub installed
Offline   Reply With Quote Quick reply to this message
Old 02-10-2008, 12:58 AM   #4 (permalink)
Rob from BC Canada
Diesel Technician
 
Rob from BC Canada's Avatar
 
Join Date: Aug 2006
Posts: 230
iTrader Score: 0 reviews

Mine does it too,

For some time, I was thinking the block heater wasn't working, it never seemed to warm up.

Glad to hear its not just mine, but I wonder why. I regularly run a 1500 watt fan heater in my camper on the same GFCI outlet, and that doesn't kick it.

It is hooked to a thermostat, so it comes on whenever it gets cold in there. That is about 13 amps at 115 volts.

There must be some other reason.
__________________
2005 Silverado LLY 3500 CCLB 4X4 Silver Grey

2006 Okanagan 90w Camper
Offline   Reply With Quote Quick reply to this message
Old 02-10-2008, 02:40 AM   #5 (permalink)
trouttrooper
Diesel Technician
 
trouttrooper's Avatar
 
Join Date: Apr 2007
Location: N. Idaho
Posts: 288
iTrader Score: 0 reviews

how old is the outlet? could be going bad....oversensitive.
__________________
2005 Chevy K3500 SRW, 8.1/Allison, CCLB, 4:10's, G80

The few...the proud...the BIG BLOCKS

3500 SRW club member #002
Offline   Reply With Quote Quick reply to this message
Old 02-10-2008, 03:05 AM   #6 (permalink)
Big Red Chevy
Diesel Fanatic
 
Big Red Chevy's Avatar
 
Join Date: Jan 2008
Location: Greenville, KY
Posts: 52
iTrader Score: 0 reviews

KY Diesel place Club Member

I don't plug my truck up, but my CAT end loader at work is plugged up in a gfci and never trips it.
__________________
KYLE
05 Chevy LLY Crew Cab LT Dually 4x4, Crank it up Diesel Tie rod sleeves and centerlink, BD Diesel Remote Fuel Filter, EGR Blocked, TTS Dual Lift Pumps, FPRV Shim, Bullydog Outlook Monitor, AFE Stage 2 CAI, LBZ Turbo Mouthpiece, BD Diesel Manifold, Diamond Eye Turbo Direct Pipe, Diamond Eye 5" exhaust straight piped, Suncoast Stage IV w/ 1056 Torque Converter and Allison Deep pan

EFI Live Tuned!!!


1981 VW Rabbit Pickup, 1.6L Diesel, 4 Speed Manual, 35 MPGs
Offline   Reply With Quote Quick reply to this message
Old 02-10-2008, 11:32 AM   #7 (permalink)
rjm022
Diesel Technician
 
Join Date: Dec 2004
Posts: 207
iTrader Score: 0 reviews

my block heater is also plugged into a gfci outlet- no problems here.
Offline   Reply With Quote Quick reply to this message
Old 02-10-2008, 11:48 AM   #8 (permalink)
ZF6 MAN
Diesel Specialist
 
Join Date: Jan 2006
Location: Maine
Posts: 703
iTrader Score: 0 reviews

Same here, I plug mine in at work during the day and it is a GFCI Outlet. I have clamped an amprobe on while it was running and it only pulls anout 7.5 A I would guess you have something wrong if the GFCI is tripping.

A GFCI Senses voltage return on the neultral side of the load and if there is an imbalance detected it will trip the GFI most of them are set at 3-5 mA to trip.
__________________
2008 GMC Crew SLT LMM
Turbo Back SS 4"
EFI Live
Offline   Reply With Quote Quick reply to this message
Old 02-10-2008, 11:50 AM   #9 (permalink)
Chromer
Diesel Master
 
Chromer's Avatar
 
Join Date: Dec 2007
Location: Northern IL
Posts: 1,303
iTrader Score: 0 reviews

Illinois Diesel Power (IDP) Member

How 'bout a bad extension cord? Maybe try a different one...
__________________
2008 LMM Silverado 2500HD Z71 4x4 EC/LB
Black, LTZ w/Black Leather, power rear slider, clearance lights
Transgo Jr. & Transynd
running Mobil Delvac 1 ESP 5w40 in the engine and Mobil 1 75w90 Gear Oil in the screws
LineX Spray-in Bedliner
Raptor Stainless Steel Oval Tube steps
TracRac System w/Weatherguard tool box
Hella 4000k 80w H11 Low Beams - Hella 4000k 100w 9005 High Beams
Offline   Reply With Quote Quick reply to this message
Old 02-10-2008, 12:03 PM   #10 (permalink)
modified
Diesel Master
 
Join Date: Oct 2003
Location: NE Wisconsin
Posts: 3,126
iTrader Score: 0 reviews

Quote:
Originally Posted by jollyrogr View Post
I think your GFCI simply can't handle the load. Use a non-GFCI outlet.
The GFI will not trip on an over-current, it's not a circuit breaker.
My defective cord would trip a GFI with 200K ohms Hot or Neutral to Grd.
The GFI is probably working, and your heater cord probably has issues.
__________________
Modified

2002 Chev 2500HD Dmax/Allison X-Cab LB 4WD, B&W Goose Hitch with Companion 5th Wheel, Highway Products Tool Chest, Jordan Ultima 2020, Frederico sway bars front & rear, Air Lift SD Bags
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Anyone use SSdiesel block heater cord or lower radiator block heater aquaman 6.5L Diesel Engine 3 12-16-2010 07:34 PM
Block Heater/Coolant Heater part number foxcub Duramax First Generation: 2001-2004 (LB7) 5 01-17-2009 02:36 PM
GFCI and block heaters Diceman Electrical 5 01-15-2009 09:59 AM
Engine Heater Trips house breaker??? sirrobinhood Duramax First Generation: 2001-2004 (LB7) 16 02-16-2007 12:48 AM
Will Oil Pan Heater throw a code on 07' LBZ like Block Heater checkmate Duramax Third Generation: 2006-2007.5 (LBZ & LLY) 14 12-26-2006 02:06 PM


All times are GMT -4. The time now is 02:24 PM.


Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide

SEO by vBSEO 3.6.0