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#1115 - 04/28/01 12:12 AM Twist-Locks  
sparky66wv  Offline
Joined: Nov 2000
Posts: 2,236
West Virginia
Okay...doosey here...(this guy really has a license?)

When is it considered necessary to use twistlock type plugs and recepts?

I've got an ice cream machine installation, two 15A 230V circuits required, no plugs provided with the used unit. Nothing in the rest of the drive-in restaurant has twist-locks.

It's gonna be one of those "pull off a miracle" job with a full panel and a full sub panel. Guess I'll trace down some unused recepts, tie 'em together to free up some bus space, and go from there.

Another panel is out of the question at this point. Would open a whole can of worms involving the PoCo and Inspector. $$$$ out the yinyang.

The HVAC guy who referred me didn't want to tackle this one!

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#1116 - 04/28/01 06:31 AM Re: Twist-Locks  
sparky  Offline
Joined: Oct 2000
Posts: 5,311
The only twist lock , code wise, that i'm aware of is in 680, otherwise it's a matter of location, vibration, # of prongs.... [Linked Image]

The 'circuit that broke the panel's back' is much more interesting, seems like i'm always there myself, looking for non-coincidental loads,dead circuit runs, wondering if they can run it for 179 min's at a time,maybe a fancy T-switch,,,,etc.

[Linked Image]

#1117 - 04/28/01 08:28 AM Re: Twist-Locks  
Tom  Offline
Joined: Jan 2001
Posts: 1,044
Shinnston, WV USA

You've got to love those full panels.

I've been working on a large building (on a part time basis) where just about every panel is full. Every time some one added a light or receptacle, they just put it on its own circuit. That's fine, they rarely trip a breaker, but when I need a space, I have to do what Sparky does. Needless to say, there is no panel schedule to help me out.

Maybe I should'a been a piano player in a ...


Few things are harder to put up with than the annoyance of a good example.

#1118 - 04/28/01 03:02 PM Re: Twist-Locks  
golf junkie  Offline
Joined: Apr 2001
Posts: 507
York, NE
Hey...if it was easy you wouldn't be making all those $$$$$ [Linked Image]

#1119 - 04/28/01 06:29 PM Re: Twist-Locks  
Bill Addiss  Offline
Joined: Oct 2000
Posts: 3,878

I would use them if flexible drops are needed and, as Sparky says where there is vibration or possibility of plug getting knocked out easily.

[Linked Image]

#1120 - 04/28/01 09:01 PM Re: Twist-Locks  
sparky  Offline
Joined: Oct 2000
Posts: 5,311
well Virgil,
we're all anxious to hear how you pull this off!

[Linked Image]

#1121 - 04/29/01 01:27 AM Re: Twist-Locks  
sparky66wv  Offline
Joined: Nov 2000
Posts: 2,236
West Virginia
Boy did I luck out!

One unused duplex receptacle that was a candidate for "cannibalizing" into the new circuit was split wired and wired with #10-3-G.

It was dedicated and freed up the two spaces I needed for one of the circuits. Two more recepts that were used occaisionally for Xmas lights, etc. were combined into one circuit.

A final unused recept near the first one was also canniballized.

Invoice? $111.74 and all future work sent my way... There will be lots looking at the mess they have.

I even told the owner, very seriously, not to let the fire insurance premiums get behind. Or rewire the whole leased building.

The music biz is worse... I was a "legit" musician before I was a sparky. Had to get a day job! Complete with college time at Berklee and WVU...Music Theory, Arranging and Composition bull! I still make a little money in music, but I'll never recover what I've invested in time, schooling, and instuments/equipment...Even belonged to the AFM local in Morgantown once...

The spellchecker ain't workin'...

[This message has been edited by sparky66wv (edited 04-29-2001).]

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#1122 - 04/29/01 06:42 AM Re: Twist-Locks  
sparky  Offline
Joined: Oct 2000
Posts: 5,311
you lucked out! good for you!
I call those 'hero' or 'zero' jobs
it's one or the other, no inbettween...
[Linked Image]

#1123 - 05/01/01 11:32 PM Re: Twist-Locks  
therain4  Offline
Joined: Dec 2000
Posts: 38
Dunmore,Pa. U>S.A.
I ran across a permiseve rule in article 410-27 for locking type connecters.By the way I did a two week gig in Morgantown back in (76)? payed travelleng dues everywhere we played I was a pro for about five years.Whatever you do don't let it stop being fun playing.

[This message has been edited by therain4 (edited 05-01-2001).]

#1124 - 05/02/01 07:50 AM Re: Twist-Locks  
electure  Offline

Joined: Dec 2000
Posts: 4,260
Fullerton, CA USA
Hey Virgil,
Another place for twistems is on cord connected showcases (NEC410-29).
Sounds like your career change could be labeled as a humanitarian effort from the pics and tales you've got.
(I played lead guitar in a band-late'60s to early'70s,made some $, but became a spark so I could eat every day)

[This message has been edited by electure (edited 05-02-2001).]

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