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Oilfield work #172159 12/14/07 07:48 PM
Joined: Feb 2004
Posts: 1,437
Lostazhell Offline OP
I finally took a camera with me out to work... Here's a bit of the fun I came across....

I was requested to replace the light fixture here... it keeps cycling off/on all night and they say it's cheaper to buy a new fixture than a ballast kit (I've already relamped it once a week ago)
[Linked Image from]

After that I swung around to the front to see the light fixture and noticed there wasn't much keeping the 15KVA transformer in the air!
[Linked Image from]

transformer name and data plate.... I've never heard of this brand before, but I like the spaceship smile

[Linked Image from]

Just because, I decided to take a peek in the disconnect for the light... Ugh! fused neutral! among other things!

[Linked Image from]

Well... Now I decide to take a peek in the disco for the control building, and lo and behold..... (The #12 double taps go to the previous disco)

[Linked Image from]

Really good (errr, BAD!) place to keep a spare fuse!

[Linked Image from]

more to come!


2017 / 2014 NEC & Related Books and Study Guides
Re: Oilfield work [Re: Lostazhell] #172160 12/14/07 07:55 PM
Joined: Jul 2007
Posts: 1,335
sparkyinak Offline
You think that the someone would be more serious with their electrical especially at a facility like that. Go figure.

"Live Awesome!" - Kevin Carosa
Re: Oilfield work [Re: sparkyinak] #172240 12/16/07 03:42 PM
Joined: Feb 2004
Posts: 1,437
Lostazhell Offline OP
In actuality, they are pretty serious about things out here... This (along with alot of other leases owned by the company we're working for) have been passed from owner to owner many times, starting life as Unocal Oil. As alot of the Midway Sunset leases were developed between the 40's - 70's, we come across all kinds of strange ideas. This facility is from the 60's, and has likely been operating like this since then. The current lease owner has had possession for about 3 years now and is steadily coming across these things and cleaning them up as they show.... After alerting them to the fused neutrals and the barely up there transformer, I'm told we'll be addressing them this coming week. smile (Oil is about $90/barrel... it's not like they're broke or something!)

Re: Oilfield work [Re: Lostazhell] #172246 12/16/07 08:00 PM
Joined: Feb 2003
Posts: 939
frenchelectrican Offline
Randy .,,

What the 15 KVA transformer feeding for?? for the parking lot luminares only ???

IMO only for parking lot luminaires you can get rid of those 15 KVA pots


Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

Re: Oilfield work [Re: frenchelectrican] #172297 12/17/07 07:39 PM
Joined: Feb 2004
Posts: 1,437
Lostazhell Offline OP
Marc, the 15KVA is also feeding a control building for the water plant (you can see part of it in the 1st pic, the last disco with the 80A fuses is for the control building subpanel! PLC's and computers on a fused neutral crazy

Re: Oilfield work [Re: Lostazhell] #172521 12/20/07 04:54 PM
Joined: Oct 2007
Posts: 6
jrclen Offline
New Member
That spare fuse in the disconnect gives me the willies. I guess in phase to phase short, it would blow. Nice pictures.

Re: Oilfield work [Re: jrclen] #172537 12/20/07 08:59 PM
Joined: Mar 2007
Posts: 404
noderaser Offline
The white tape on the neutral fuse doesn't make it code complaint?

Re: Oilfield work [Re: noderaser] #172551 12/21/07 12:34 AM
Joined: Jul 2007
Posts: 1,335
sparkyinak Offline
It is to. The tape holds the fuse together so it will not blow. Duuuh! crazy

"Live Awesome!" - Kevin Carosa
Re: Oilfield work [Re: sparkyinak] #172575 12/21/07 12:38 PM
Joined: Jun 2006
Posts: 613
mikesh Offline
I am very concerned that a 120 or 240 volt light is mounted above the HV conductors. My overhead standards book requires around 3 or more meters vertical separation. Anyone servicing that fixture has to break a lot of rules to work there. Close limits of approach, Hot stick work and line trucks to change light bulbs.
The main switch should be rated or equiped with a neutral block and should be marked for use as a service entry.

Re: Oilfield work [Re: mikesh] #172592 12/21/07 08:33 PM
Joined: Mar 2004
Posts: 391
BigJohn Offline
Originally Posted by mikesh
I am very concerned that a 120 or 240 volt light is mounted above the HV conductors.
I initially thought the same thing, but looking at the first picture more closely it looks like those overheads are actually the 480 feeds to the transformer primary. I've never seen cutouts in low-voltage distribution but, then again, what I know about O/H I could write on a matchbook.


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