|
1 members (Scott35),
235
guests, and
27
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
|
Joined: Oct 2000
Posts: 2,749
Member
|
Here's a reply I received from Bussmann: Hi Joe,
It appears one of the members properly identified the product which we offer.
We offer "dummy" fuses or neutrals for Class H/R, Class CC, midgets (13/32" X 1-1/2") and small dimension (1/4" X 1-1/4") fuses.
These fuses can only be utilized where overcurrent protection is not required by the code, such as for neutrals.
For example, let's say you have a 120/240V system and use a 3 pole 240V switch.
You could run the two hot phases through two of the poles with protection by a fuse and install the "dummy" fuse in one pole, and run the neutral through.
They also use these allot in lighting circuits for the neutral conductor.
Bussmann
Joe Tedesco, NEC Consultant
|
|
|
|
|
Joined: Oct 2000
Posts: 2,749
Member
|
Here are those "Dummy Fuses" ![[Linked Image from bussmann.com]](http://www.bussmann.com/products/Accessories/images/DummyFuse.gif)
Joe Tedesco, NEC Consultant
|
|
|
|
|
Joined: Aug 2002
Posts: 1,081
Member
|
So, joemar4, to clarify:
This install did, in fact, require fuses, and somebody (previously) had deliberately eliminated them?
Even if the fuses were not required, obviously copper tubing is not listed for such a use.
Does "dummy" refer to the fuses, or...never mind...
P. S. Under the voltages/amps in this case, would said copper tubing act as a fuse or would it survive a short?
P. P. S. Is the tubing the same as what appears at the bottom-left of the top photo?
|
|
|
|
|
Joined: Jun 2003
Posts: 1,143
Member
|
Obviously, the plumber has been scabbing electrical work again! ![[Linked Image]](https://www.electrical-contractor.net/ubb/biggrin.gif)
|
|
|
|
|
Joined: Aug 2002
Posts: 1,081
Member
|
DougW: Obviously, the plumber has been scabbing electrical work again! I didn't want to "go there..." That sure would explain it, though. The fuses blew and the plumber needed to get the thing working again, and...
|
|
|
|
|
Joined: Apr 2001
Posts: 518
Member
|
I cannot determine if it is required that this disconnect be fused; there may be fuses at the starter.
IF it is not required, then the use of manufactured "blanks" is OK.
|
|
|
|
Posts: 57
Joined: August 2003
|
|
|
|
