CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!
Go Back   Electrician Talk - Professional Electrical Contractors Forum > Electrical Forum > General Electrical Discussion

Reply
 
Thread Tools Search this Thread Display Modes
Old 12-20-2013, 12:11 PM   #1
Member
 
Join Date: Nov 2013
Location: massachusetts
Posts: 99
Rewards Points: 75
Default engine block heater trips gfi

A customer of mine at his shop is tripping gfis with his diesel engine block heater. Plugged into a non gfi outlet it works fine. The heater is for a 2000 f-450. Anyone experience this before?

finster is offline   Reply With Quote
Join Contractor Talk

Join the #1 Electrician Forum Today - It's Totally Free!

ElectricianTalk.com - Are you a Professional Electrical Contractor? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's the leading place for electricians to meet online. No homeowners asking DIY questions. Just fellow tradesmen who enjoy talking about their business, their trade, and anything else that comes up. No matter what your specialty is you'll find that ElectricianTalk.com is a great community to join. Best of all it's totally free!

Join ElectricianTalk.com - Click Here JOIN FOR FREE


Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ElectricianTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Old 12-20-2013, 12:26 PM   #2
Senior Member
 
Join Date: Feb 2013
Location: BC, Canada
Posts: 246
Rewards Points: 150
Default

Heater coil may have a little leakage causing gfi to trip

BlackHowling is offline   Reply With Quote
The Following User Says Thank You to BlackHowling For This Useful Post:
BBQ (12-20-2013)
Old 12-20-2013, 12:29 PM   #3
Member
 
Join Date: Nov 2013
Location: massachusetts
Posts: 99
Rewards Points: 75
Default

Quote:
Originally Posted by BlackHowling View Post
Heater coil may have a little leakage causing gfi to trip
Its brand new though. And its been a pattern with his other trucks.
finster is offline   Reply With Quote
Old 12-20-2013, 12:37 PM   #4
Donuts > Fried Eggs
 
Big John's Avatar
 
Join Date: May 2010
Location: Portland
Posts: 15,076
Rewards Points: 2,366
Default

If you've got a good GFCI tester, confirm the proper trip point of the GFCI:



Or else, just move to a different GFCI and see if the problem follows it. It if it does, the block heater has a >4mA ground fault.
__________________
Spend $86 to keep yourself safe. Always wear your gloves.
Big John is offline   Reply With Quote
The Following 3 Users Say Thank You to Big John For This Useful Post:
BBQ (12-20-2013), bruce6670 (12-20-2013), Semi-Ret Electrician (12-22-2013)
Old 12-20-2013, 12:38 PM   #5
Senior Member
 
Join Date: Jan 2011
Location: canada
Posts: 697
Rewards Points: 512
Default

check resistance with meter between hot and ground on heater, you should get infinite, even if it is brand new it can be defective
oliquir is offline   Reply With Quote
Old 12-20-2013, 01:02 PM   #6
Coffee drinking member
 
Wirenuting's Avatar
 
Join Date: Sep 2010
Location: IL
Posts: 8,710
Rewards Points: 2,070
Default

We had them here years ago. When the block heaters went bad it hurt like a mother some mornings until we installed GFCI's.
You can guess what was wrong.
__________________
Teacher, my brain is full... Can I go home now?
Wirenuting is offline   Reply With Quote
Old 12-20-2013, 01:48 PM   #7
Ambassador of Amps
 
TOOL_5150's Avatar
 
Join Date: Aug 2007
Location: sf bay area, CA
Posts: 9,321
Rewards Points: 2,028
Default

Quote:
Originally Posted by Wirenuting View Post
We had them here years ago. When the block heaters went bad it hurt like a mother some mornings until we installed GFCI's.
You can guess what was wrong.
You didnt have shoes on.
__________________
I HAVE THE RIGHT TO OFFEND ANYONE I PLEASE. YOU HAVE THE RIGHT TO BE OFFENDED, YOU DO NOT HAVE THE RIGHT TO SHUT ME UP.

Advertising space available. Inquire within.
TOOL_5150 is online now   Reply With Quote
Old 12-20-2013, 02:06 PM   #8
Coffee drinking member
 
Wirenuting's Avatar
 
Join Date: Sep 2010
Location: IL
Posts: 8,710
Rewards Points: 2,070
Default

Quote:
Originally Posted by TOOL_5150
You didnt have shoes on.
We parked the trucked nose to tail and touching 2 was shocking at times. The guy in the garage who made the cords for the plugs was nice enough to solidly ground the trucks frame. The bad part was the conduit that ran down the walls and loading dock was rotted and falling apart in spots. There was no ground wire run back to the panel.
__________________
Teacher, my brain is full... Can I go home now?
Wirenuting is offline   Reply With Quote
Old 12-20-2013, 02:09 PM   #9
Ambassador of Amps
 
TOOL_5150's Avatar
 
Join Date: Aug 2007
Location: sf bay area, CA
Posts: 9,321
Rewards Points: 2,028
Default

thats really not a good situation right there.
__________________
I HAVE THE RIGHT TO OFFEND ANYONE I PLEASE. YOU HAVE THE RIGHT TO BE OFFENDED, YOU DO NOT HAVE THE RIGHT TO SHUT ME UP.

Advertising space available. Inquire within.
TOOL_5150 is online now   Reply With Quote
The Following User Says Thank You to TOOL_5150 For This Useful Post:
Wirenuting (12-20-2013)
Old 12-20-2013, 02:21 PM   #10
toothless peckerhead
 
chicken steve's Avatar
 
Join Date: Mar 2011
Location: cooped up
Posts: 22,762
Rewards Points: 2,852
Default

95% of my 'gfci tripping' calls are simply due to them doing their job

in fact, i really think there should be a 'thank your gfci day' for all the incessant complainers out there to realize they may not have been around to beeeaatch w/o them


~CS~
__________________
And it's all because..
chicken steve is offline   Reply With Quote
The Following 5 Users Say Thank You to chicken steve For This Useful Post:
Big John (12-20-2013), dthurmond (12-20-2013), Semi-Ret Electrician (12-22-2013), wildleg (12-21-2013), Wirenuting (12-20-2013)
Old 12-20-2013, 02:24 PM   #11
Donuts > Fried Eggs
 
Big John's Avatar
 
Join Date: May 2010
Location: Portland
Posts: 15,076
Rewards Points: 2,366
Default

Quote:
Originally Posted by chicken steve View Post
95% of my 'gfci tripping' calls are simply due to them doing their job.
True of virtually every protection scheme I can think of: GFCIs, fuses, motor overloads, breakers, protective relays, you name it. Rule #1: It's most likely not a problem with the protective device.
__________________
Spend $86 to keep yourself safe. Always wear your gloves.
Big John is offline   Reply With Quote
The Following 5 Users Say Thank You to Big John For This Useful Post:
chicken steve (12-20-2013), jrclen (12-21-2013), Semi-Ret Electrician (12-22-2013), wendon (12-20-2013), Wirenuting (12-20-2013)
Old 12-20-2013, 03:04 PM   #12
BBQ
Salty Member
 
BBQ's Avatar
 
Join Date: Nov 2010
Location: New England
Posts: 31,029
Rewards Points: 2,000
Default

Quote:
Originally Posted by Big John View Post
True of virtually every protection scheme I can think of: GFCIs, fuses, motor overloads, breakers, protective relays, you name it. Rule #1: It's most likely not a problem with the protective device.
But what is depressing is that often the same people who would never even consider doing away with any of those items have no problem with getting rid of the GFCI.
BBQ is offline   Reply With Quote
Old 12-20-2013, 03:24 PM   #13
Ambassador of Amps
 
TOOL_5150's Avatar
 
Join Date: Aug 2007
Location: sf bay area, CA
Posts: 9,321
Rewards Points: 2,028
Default

Quote:
Originally Posted by BBQ View Post
But what is depressing is that often the same people who would never even consider doing away with any of those items have no problem with getting rid of the GFCI.
Thats not depressing, thats natural selection.
__________________
I HAVE THE RIGHT TO OFFEND ANYONE I PLEASE. YOU HAVE THE RIGHT TO BE OFFENDED, YOU DO NOT HAVE THE RIGHT TO SHUT ME UP.

Advertising space available. Inquire within.
TOOL_5150 is online now   Reply With Quote
Old 12-20-2013, 03:33 PM   #14
Senior Member
 
Deep Cover's Avatar
 
Join Date: Dec 2012
Location: SE WI
Posts: 2,909
Rewards Points: 2,000
Default

I installed an outside GFI for a block heater a couple years back. Months after, our office person called me and asked why I put a GFI in for the block heater. I said, well, because it's required to be a GFI. She told me that I had to go back and change it out to a regular receptacle because most block heaters will trip a GFI. She also told me that an inspector told them it was OK.

I told her to have someone else do it. She did. Not for this reason in particular, but I do not work there anymore.
Deep Cover is offline   Reply With Quote
Old 12-20-2013, 05:35 PM   #15
my first time
 
Join Date: Jul 2012
Location: mi
Posts: 713
Rewards Points: 528
Default

i know its off subject a bit, but in my house my garage door openers, my basement freezer, and sump pump are not on gfi's. to me, i want all these systems to work. i have heard that newer motors aren't supposed to nuisance trip. why chance it. whether it being a buttload of spoiled meat, or having to get out of my car when its snowing to beat hell, to come home to a flooded basement. i liked the old ways. have a single outlet for each. maybe i will do assured grounding quarterly on all these...
cl219um is offline   Reply With Quote
Old 12-20-2013, 07:11 PM   #16
Electrical Contractor
 
wendon's Avatar
 
Join Date: Sep 2010
Location: Wisconsin
Posts: 5,603
Rewards Points: 2,346
Default

Quote:
Originally Posted by cl219um View Post
i know its off subject a bit, but in my house my garage door openers, my basement freezer, and sump pump are not on gfi's. to me, i want all these systems to work. i have heard that newer motors aren't supposed to nuisance trip. why chance it. whether it being a buttload of spoiled meat, or having to get out of my car when its snowing to beat hell, to come home to a flooded basement. i liked the old ways. have a single outlet for each. maybe i will do assured grounding quarterly on all these...
Does your state have an exception for that?
__________________
The difference between genius and stupidity is that genius has it's limits.
Albert Einstein
wendon is offline   Reply With Quote
Old 12-21-2013, 01:28 AM   #17
Senior Member
 
Dan Wheeler's Avatar
 
Join Date: Nov 2013
Location: BC, Canada
Posts: 109
Rewards Points: 75
Default

I just had a call about a month ago or so saying their outside receptacle was not working.
Went there and found the hot wire was corroded.
Told them I had to put in a gfci and did.
Got call next day, saying their block heater was tripping it, they said anything they plug in would not work.

Went back thinking maybe faulty gfci, pressed reset and plugged stuff in, all worked fine, even ran my heat gun.

Told caretaker what was happening and they said to leave it, renter probably had their cord sitting in water, or block heater, was old diesel truck.
Dan Wheeler is offline   Reply With Quote
The Following User Says Thank You to Dan Wheeler For This Useful Post:
BBQ (12-21-2013)
Old 12-21-2013, 02:31 AM   #18
Senior Member
 
five.five-six's Avatar
 
Join Date: Apr 2013
Location: So Cal
Posts: 2,819
Rewards Points: 2,034
Default

Quote:
Originally Posted by chicken steve View Post
95% of my 'gfci tripping' calls are simply due to them doing their job

in fact, i really think there should be a 'thank your gfci day' for all the incessant complainers out there to realize they may not have been around to beeeaatch w/o them


~CS~
When I was in the aquarium hobby I had some very long winded inter-webs arguments with people that hated GFIC, every now and then one of them would stop posting here or there. No obituary or nothing, they just stopped posting.
five.five-six is online now   Reply With Quote
Old 12-21-2013, 05:07 AM   #19
BBQ
Salty Member
 
BBQ's Avatar
 
Join Date: Nov 2010
Location: New England
Posts: 31,029
Rewards Points: 2,000
Default

Quote:
Originally Posted by cl219um View Post
i know its off subject a bit, but in my house my garage door openers, my basement freezer, and sump pump are not on gfi's. to me, i want all these systems to work. i have heard that newer motors aren't supposed to nuisance trip. why chance it. whether it being a buttload of spoiled meat, or having to get out of my car when its snowing to beat hell, to come home to a flooded basement. i liked the old ways. have a single outlet for each. maybe i will do assured grounding quarterly on all these...
Yeah, for sure.

It would be much better for you or a family member to get a shock or even killed vs replacing some spoiled meat or the hell of stepping out of the car in the snow.

I am sure you have the sump pump on battery back up and auto generator as well in case of utility failure.
BBQ is offline   Reply With Quote
The Following User Says Thank You to BBQ For This Useful Post:
MTW (12-21-2013)
Old 12-21-2013, 06:52 AM   #20
BBQ
Salty Member
 
BBQ's Avatar
 
Join Date: Nov 2010
Location: New England
Posts: 31,029
Rewards Points: 2,000
Default

Quote:
Originally Posted by TOOL_5150 View Post
Thats not depressing, thats natural selection.
As long as it happens to the person who takes out the GFCI I agree with you.








BBQ is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Replace Engine VS ...Not Deep Cover Off Topic 43 11-25-2013 08:20 AM
Kohler engine RIVETER Off Topic 4 11-09-2013 08:48 AM
New/Better Search Engine A Little Short Off Topic 15 01-23-2013 04:55 PM
Engine heater receptacles MadDawg Canadian Electrical Code Forum 24 12-01-2012 07:12 PM
SPA Jets Work, Heater Trips Breaker daviddeke Residential Electrical Forum 2 02-12-2011 09:31 PM


All times are GMT -4. The time now is 04:05 AM.


Copyright 2006-2014 Escalate Media LP. All Rights Reserved
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | HVACSite.com | PaintTalk.com | PlumbingZone.com | RoofingTalk.com