Another twist on Spot the Violations!

[480sparky]

We've all seen the photos of a fused disconnect where a short piece of wire, a peice of pipe or EMT or whatever being used in place of the fuse. Here's a new twist:

Anyone got an idea why the twist?

 

[iwire]

It looks better?

I belive 14 AWG becomes a fuse at 200 amps, that looks larger.

 

[paul]

I think that in the larger scheme of things, the twist is irrelevant.

 

[wewirepgh]

Its a finger loop for to remove the wire .:grin:

 

[360Youth]

Apparently the ampacity difference between copper and alluminum is gretaer than I thought. :grin:

 

[ultramegabob]

they didnt use the proper color wire:grin:

 

[Twoskinsoneman]

Apparently the ampacity difference between copper and alluminum is gretaer than I thought. :grin:

Wow has anyone here ever done something like that?

 

[augie47]

We've all seen the photos of a fused disconnect where a short piece of wire, a peice of pipe or EMT or whatever being used in place of the fuse. Here's a new twist:

Anyone got an idea why the twist?

I thought EVERBODY with fuse knowledge knew that. A "jumper" with a twist is a "current limiting" :grin: jumper, as opposed to a straight wire jumper. I'm certain the twist greatly reduces the "let thru" current :smile:

 

[mpd]

maybe this is an old series rated combination, maybe the downstream fuses are 18 guage with no twist

 

[iaov]

The twist provides inductive reactence wich slows the splattering copper when it blows!:grin:

 

[celtic]

Anyone got an idea why the twist?

It's for expansion/contraction as the load cycles on/off.

Is there also an issue w/line - load being in the same conduit there?

 

[iwire]

It's for expansion/contraction as the load cycles on/off.

Is there also an issue w/line - load being in the same conduit there?

Not unless this is a service disconecting means

 

[celtic]

Not unless this is a service disconecting means

Can you give me the article number on that....I know it's there - just can't remember the exact number.

 

[don_resqcapt19]

Can you give me the article number on that....I know it's there - just can't remember the exact number.

The restriction on line and load in the same raceway is found in 230.7.

 

[LarryFine]

You guys are all wrong. The twists are always provided in one-size-fits-all links.

I belive 14 AWG becomes a fuse at 200 amps, that looks larger.

I would think #14 would become an incandescent filament at 200a.

 

[480sparky]

....I would think #14 would become an incandescent filament at 200a.

I would think it depends on the length of the 14 what it does at what amperage.....

 

[celtic]

The restriction on line and load in the same raceway is found in 230.7.

Thanks don...gotta highlight that so I can find it for future reference.

 

[iwire]

You guys are all wrong. The twists are always provided in one-size-fits-all links.

I would think #14 would become an incandescent filament at 200a.

At roughly 200 amp it melts out, say 150 - 175 if you want a filament.

 

[electricmanscott]

Wow has anyone here ever done something like that?

Has anyone NOT?

 

[iwire]

Has anyone NOT?

I will fess up, I have done things like that for temporary periods of time.