To avoid these ads, REGISTER NOW!

FIRE! What was supposed to protect me from this?

DGersic

Well-known member
Joined
Mar 12, 2017
Messages
6,290
Location
DeKalb, IL
It’s been a long day.

I arrived at my beach cottage in NJ about 11pm Thursday night, basically just made the bed, turned on the baseboard heaters, and went to bed. This morning (Friday), I woke up about 7:15am, made a mug of tea (electric stove), and was contemplating life when about 7:45am there was a loud Bang! Bang! Bang Bang Bang Bang Bang! from outside the house. Sounded like somebody trying to start an unmuffled badly tuned lawnmower.

Except there are no lawns here. It’s all rocks and sand.

Opening the door and looking out to see what was going on, I found my meter pan actively throwing flames and sparks, and smoke pouring out of the mast. Sorry, no pictures or video, it was a bit hectic. Neighbor called 911 while I grabbed a set of pliers to remove the do-not-disturb tag, opened the meter pan, and hit it with fire extinguisher #1.

Emptying #1 in to the box mostly stopped the fire there. It did not stop the burning wire. We watched as it burned from mast to over head wires, and dropped the burning wire on the roof. Fire extinguisher #2 saved the roof. We then watched as the wire burned all the way to the pole. At that point, the transformer down the street finally blew its “fuses”, and shut down the block.

Heres the meter pan, before the power company showed up and pulled the meter.

IMG_9162.jpeg

Old asbestos & concrete siding for the win. It has some scorch / smoke damage, but it didn’t burn.

Inside what’s left of the meter pan.

IMG_9171.jpegIMG_9172.jpeg

Inside the breaker panel.

IMG_9173.jpeg

Inside, there is melted Romex from the heat of the ground wire.

IMG_9178.jpegIMG_9184.jpeg

Electricians will be fixing this. Today, I had police, fire department, power company, electrical inspector, fire inspector, building inspector all here. The meter is gone, and the service is cut off at the pole. After electricians, and inspection, power company will reconnect. We need at least a new meter pan, mast, some wiring, and whatever else, plus new service lines and a meter.

Here is what didn’t happen. Two blocks over, a couple weeks ago, basically the same thing happened. But they didn’t catch it fast enough and the house is a total loss.

IMG_9190.jpeg

So, extinguishers work. Have several on hand, as one may not be enough. I just bought two new ones.

The initial opinion from the fire department is that salt air (beach cottage) and time caused corrosion in the wires at the meter panel, eventually leading to failure. One of the hots met the neutral, and (literally) Bang! The failure seems to be on the power company side, so not caused by anything in the house.

The electric was inspected post Sandy (2012) and the meter is new. They were all replaced after Sandy blew through. I don’t know how old the service wire is, probably is newer than 1990. A neighbor claims to be the first (1990) house to have to add a mast, previously the service wire ran to a fascia mounted bracket, and often was just laying on the roof.

From what I can see, there is a ground rod ~5’ from the panel, though I don’t know how deep it goes. It is tied to the neutral at the panel. Then there is a neutral / ground that runs across the house and is tied to the (copper) plumbing, going in to the ground. The in-house ground wire heated up to the point of melting its own sheath and the nearby Romex.

If the failure is, in fact, on the power company side of the meter, was something supposed to stop the in-house side of this from melting down? It seems like this shouldn’t have been this bad, with up to code wiring, grounding, and a modern breaker panel.

It seems that I am incredibly lucky. If this had cooked off 12 hours earlier, I would likely be filing an insurance claim for “destroyed house”. An hour later, I would have been food shopping, and it would have gone up. It picked exactly the time when I was there, quiet, and heard it go. The extinguishers worked, though they taste horrible.
 
To avoid these ads, REGISTER NOW!

wyliesdiesels

Well-known member
Joined
Aug 14, 2012
Messages
19,994
Location
Modesto, CA
line to neutral short

If the failure is, in fact, on the power company side of the meter, was something supposed to stop the in-house side of this from melting down? It seems like this shouldn’t have been this bad, with up to code wiring, grounding, and a modern breaker panel.

nope. there is no protection on the line side of main breaker in the panel, that would stop that.
 

mm08822

Well-known member
Joined
Jan 13, 2012
Messages
5,890
Location
NJ
Some pics are hard to see additional detail to fully follow the path of destruction, but it looks to me:
  • The right side meter lug broke off of its insulator and touched the meter enclosure.
  • That wire grounded out to the meter enclosure.
  • The grounding electrode and ground rod may or may not have conducted some of the ground current back through the sand up to the transformer on the pole.
  • The ground wire to the house water pipe however carried a very high current as evidenced by the melted insulation on it. It also looks to be a #4 copper wire. To melt the insulation on that, it had a good 100+ amps on it I believe. Hard to say how long this was happening for. Once it reaches enough insulation breakdown, the rest goes quickly.
  • The water service to the house significantly completed the circuit back towards the pole. Salty sand and water helped complete the circuit back to the pole ground wire.
You are lucky in many aspects. Good thing you didn't sleep late! That water pipe ground wire could have lit the entire length of the roof up.

So to answer your question, nothing other than visual inspection may have stopped this. It is unlikely anyone would have been looking into the meter pan unless there was an external concern observed - physical external damage. Maybe a meter changeout could have flagged it or even been the final action to create the actual contact to enclosure.

The fuses at the pole transformer are sized so several houses are fed from it. Also probably time delay fuses to handle the hot, full blast ac sweltering days.
 

rsanter

Well-known member
Joined
Dec 22, 2007
Messages
18,505
Location
visalia ca
Well good thing thats all the happened

may not be connected, but

when I was in charge of the facility, any time electrical work was done I required a thermal camera inspection of any panels that were worked on.
the electricians always said it was not needed but I insisted (and we had a thermal camera on site). It’s amazing how often they found hot spots and ended up tightening lugs
 

cgrutt

Well-known member
Joined
Mar 4, 2016
Messages
8,203
Wow glad you were there and prepared to handle it and didn't get hurt in the process. Could have been much worse. Good luck getting it all sorted out.

ETA friend of mine has four houses at NJ shore three of them look similar to yours. I'm going to send him your pics in am and give him a heads-up about what happened and how you saved your place.
 
Last edited:
OP
D

DGersic

Well-known member
Joined
Mar 12, 2017
Messages
6,290
Location
DeKalb, IL
Some pics are hard to see additional detail to fully follow the path of destruction, but it looks to me:
  • The right side meter lug broke off of its insulator and touched the meter enclosure.
  • That wire grounded out to the meter enclosure.
  • The grounding electrode and ground rod may or may not have conducted some of the ground current back through the sand up to the transformer on the pole.
  • The ground wire to the house water pipe however carried a very high current as evidenced by the melted insulation on it. It also looks to be a #4 copper wire. To melt the insulation on that, it had a good 100+ amps on it I believe. Hard to say how long this was happening for. Once it reaches enough insulation breakdown, the rest goes quickly.
  • The water service to the house significantly completed the circuit back towards the pole. Salty sand and water helped complete the circuit back to the pole ground wire.
You are lucky in many aspects. Good thing you didn't sleep late! That water pipe ground wire could have lit the entire length of the roof up.

So to answer your question, nothing other than visual inspection may have stopped this. It is unlikely anyone would have been looking into the meter pan unless there was an external concern observed - physical external damage. Maybe a meter changeout could have flagged it or even been the final action to create the actual contact to enclosure.

The fuses at the pole transformer are sized so several houses are fed from it. Also probably time delay fuses to handle the hot, full blast ac sweltering days.

Thanks. It’s weird to me that there’s no protection to stop this. So, I learned something today, and it didn’t even hurt.

Yes, I’m very lucky. This could have gotten a lot worse.

It doesn’t look to me like the ground rod did anything. The wire from the ground lug in the panel is present and looks un-damaged. I’ll have to check that too.
 

mm08822

Well-known member
Joined
Jan 13, 2012
Messages
5,890
Location
NJ
The grd rod is more for lightning strikes and elimination of static electricity.

Since ground conductivity is so variable and seasonal, grd rods are not considered a return path. (I know you're a believer of that now.)

Also look at the grd rods and connection. Has it degraded/damaged? Was the rod used 8' or a little 2'?

A new service will be installing 2 8' rods.

Im also wondering if there was any high resistance neutral connection(s) present that could have lowered the initial fault current enabling a lot more time for the path to cook away.

This could increase the amount of current on the water meter ground wire path.
 
Last edited:

njride

Well-known member
Joined
Sep 1, 2011
Messages
646
The grd rod is more for lightning strikes and elimination of static electricity.

Since ground conductivity is so variable and seasonal, grd rods are not considered a return path. (I know you're a believer of that now.)

Also look at the grd rods and connection. Has it degraded/damaged? Was the rod used 8' or a little 2'?

A new service will be installing 2 8' rods.

Im also wondering if there was any high resistance neutral connection(s) present that could have lowered the initial fault current enabling a lot more time for the path to cook away.

This could increase the amount of current on the water meter ground wire path.
I did my cousins service after sandy in Ocean Beach, I started hammering the first ground rod in and it literally fell into the ground, to the point I almost lost it lol. Glad everyone is OK and the house wasn't lost. Make sure they use noalox on the terminations in the new meter pan.
 
Last edited:

captain14

Well-known member
Joined
Dec 19, 2012
Messages
7,032
Location
Near College Park Maryland 20740
You said the same extinguishers tasted horrible.

How much of the powder did you inhale/ingest? Yiu should probably get checked by a physician if you did.

Just be glad you were there when it happened.
 
  • Like
Reactions: JRP

mm08822

Well-known member
Joined
Jan 13, 2012
Messages
5,890
Location
NJ
I did my cousins service after sandy in Ocean Beach, I started hammering the first ground rod in and it literally fell into the ground, to the point I almost lost it lol. Glad everyone is OK and the house wasn't lost. Make sure they use noalox on the terminations in the new meter pan.
Yeah, I've lucked out a few times like that but it makes you ask yourself how useless this may be. Usually it's clay/shale☹️.
 

35Ford

Well-known member
Joined
Apr 4, 2020
Messages
140
Location
Central MA
Interesting that it appears a lot of the fault current went to the water main and not back on the power co neutral. Ground rods in sandy soil won’t do much unless it’s wet.
Fault did occur on the service side of the main breaker. As others have said, no protection other than the fuse at the transformer. Except for the ground wire, the equipment did a fair job of containing it. But yes, you were lucky. Just as a side note, around here, the power co is only responsible up to the point of attachment. Anything below that, mast, wires, meter socket etc., with the exception of the meter its self, belongs, is maintained and is the responsibility of the owner. Not sure if it’s the same where you are.
 
To avoid these ads, REGISTER NOW!

Carchie

Active member
Joined
Apr 24, 2018
Messages
26
It’s been a long day.

I arrived at my beach cottage in NJ about 11pm Thursday night, basically just made the bed, turned on the baseboard heaters, and went to bed. This morning (Friday), I woke up about 7:15am, made a mug of tea (electric stove), and was contemplating life when about 7:45am there was a loud Bang! Bang! Bang Bang Bang Bang Bang! from outside the house. Sounded like somebody trying to start an unmuffled badly tuned lawnmower.

Except there are no lawns here. It’s all rocks and sand.

Opening the door and looking out to see what was going on, I found my meter pan actively throwing flames and sparks, and smoke pouring out of the mast. Sorry, no pictures or video, it was a bit hectic. Neighbor called 911 while I grabbed a set of pliers to remove the do-not-disturb tag, opened the meter pan, and hit it with fire extinguisher #1.

Emptying #1 in to the box mostly stopped the fire there. It did not stop the burning wire. We watched as it burned from mast to over head wires, and dropped the burning wire on the roof. Fire extinguisher #2 saved the roof. We then watched as the wire burned all the way to the pole. At that point, the transformer down the street finally blew its “fuses”, and shut down the block.

Heres the meter pan, before the power company showed up and pulled the meter.

IMG_9162.jpeg

Old asbestos & concrete siding for the win. It has some scorch / smoke damage, but it didn’t burn.

Inside what’s left of the meter pan.

IMG_9171.jpegIMG_9172.jpeg

Inside the breaker panel.

IMG_9173.jpeg

Inside, there is melted Romex from the heat of the ground wire.

IMG_9178.jpegIMG_9184.jpeg

Electricians will be fixing this. Today, I had police, fire department, power company, electrical inspector, fire inspector, building inspector all here. The meter is gone, and the service is cut off at the pole. After electricians, and inspection, power company will reconnect. We need at least a new meter pan, mast, some wiring, and whatever else, plus new service lines and a meter.

Here is what didn’t happen. Two blocks over, a couple weeks ago, basically the same thing happened. But they didn’t catch it fast enough and the house is a total loss.

IMG_9190.jpeg

So, extinguishers work. Have several on hand, as one may not be enough. I just bought two new ones.

The initial opinion from the fire department is that salt air (beach cottage) and time caused corrosion in the wires at the meter panel, eventually leading to failure. One of the hots met the neutral, and (literally) Bang! The failure seems to be on the power company side, so not caused by anything in the house.

The electric was inspected post Sandy (2012) and the meter is new. They were all replaced after Sandy blew through. I don’t know how old the service wire is, probably is newer than 1990. A neighbor claims to be the first (1990) house to have to add a mast, previously the service wire ran to a fascia mounted bracket, and often was just laying on the roof.

From what I can see, there is a ground rod ~5’ from the panel, though I don’t know how deep it goes. It is tied to the neutral at the panel. Then there is a neutral / ground that runs across the house and is tied to the (copper) plumbing, going in to the ground. The in-house ground wire heated up to the point of melting its own sheath and the nearby Romex.

If the failure is, in fact, on the power company side of the meter, was something supposed to stop the in-house side of this from melting down? It seems like this shouldn’t have been this bad, with up to code wiring, grounding, and a modern breaker panel.

It seems that I am incredibly lucky. If this had cooked off 12 hours earlier, I would likely be filing an insurance claim for “destroyed house”. An hour later, I would have been food shopping, and it would have gone up. It picked exactly the time when I was there, quiet, and heard it go. The extinguishers worked, though they taste horrible.
Man, that's terrifying. Glad you were there to hit it with the extinguishers before it took the whole house down. It's crazy how fast those service entrance fires can escalate.
 

wyliesdiesels

Well-known member
Joined
Aug 14, 2012
Messages
19,994
Location
Modesto, CA
It’s amazing how often they found hot spots and ended up tightening lugs

merely tightening the lugs is the wrong method. that can actually cause the connection to loosen

the proper method is to loosen the lug, cutoff the smashed conductors, and torque the lug to spec using a calibrated torque wrench and the listed torque specs.
 

wyliesdiesels

Well-known member
Joined
Aug 14, 2012
Messages
19,994
Location
Modesto, CA
Thanks. It’s weird to me that there’s no protection to stop this. So, I learned something today, and it didn’t even hurt.

only way to have that kind of protection would be to put breakers on the poles for individual service drops. would cost a fortune
 

PCustoms

Well-known member
Joined
Jul 23, 2011
Messages
22,569
Location
VT
only way to have that kind of protection would be to put breakers on the poles for individual service drops. would cost a fortune

Around here they've started doing cutouts not sure why. When they did my new pole last year the replacement got one, and as far as I've seen all new services get a fuse.


I’ve heard of this happening with aluminum service wire, but not copper. Yes, you are very lucky it happened when it did.

John

I don't think this has anything to do with aluminum wire...
 

dave*99

Well-known member
Joined
May 5, 2009
Messages
4,259
Location
Coastal NJ
Glad you are OK. I believe JCP&L is your POCO. I'm just a bit south of you on ACE for power.
I Googled the ownership question and much like where I live, the equipment is customer owned.

"No, JCP&L does not supply or own the meter pan (meter socket/box). According to FirstEnergy's Customer Guide (pg. 11) and user discussions on Facebook groups like this one, the property owner is responsible for the maintenance, repair, and installation of the meter pan, weather head, and service mast. "
 

PCustoms

Well-known member
Joined
Jul 23, 2011
Messages
22,569
Location
VT
cutouts on each service drop? have a pic? that would take up a lot of room on the crossbars...

Stolen pic, mine is similar. Can try for pic when I go back out

Pic deleted see new post below
 
Last edited:

Jagmandave

Well-known member
Joined
Nov 6, 2011
Messages
6,302
Location
Overland Park, Ks.
I lost power to one side of my 240 service in my breaker panel, POCO came out and pulled the meter and found the lug had melted, they replaced it and all's good now. My house was built in 1964 and I'm sure all the electrical service, panels etc are original to the build. Might be time to invest in some new stuff and maybe up the service from the 100amp it is now.....
 

Skiff Builder

Well-known member
Joined
Jun 7, 2016
Messages
1,782
Location
Southern NJ Coast
Glad to hear you got it contained quickly!

Can't beat the asbestos siding when it comes to fire and paint retention.

I'm just a bit south of you. I've got a spare Meter/Main enclosure Let me know if you need it or anything else in the way of tools or temp equipment to see you through the repairs.
 
To avoid these ads, REGISTER NOW!
Top Bottom