Fire alarm conductor color

[panhandle444]

For a initiating loop, a signaling loop.

The black is negative and the red or white is positive?

Where does it say that in the FA code?

 

[gadfly56]

For a initiating loop, a signaling loop.

The black is negative and the red or white is positive?

Where does it say that in the FA code?

You won't find it there, or anywhere, because it doesn't exist in the codes and standards, AFAIK. Local amendments may change that (Rhode Island is one particular example of insanity), or there may be a project specification spelling it out. It is a common industry practice, but not a requirement otherwise.

 

[peter d]

You won't find it there, or anywhere, because it doesn't exist in the codes and standards, AFAIK. Local amendments may change that (Rhode Island is one particular example of insanity), or there may be a project specification spelling it out. It is a common industry practice, but not a requirement otherwise.

:happyyes::thumbsup:

Having worked extensively under RI fire alarm code rules, I can say all of them are a pointless waste of time.

 

[shputnik]

:happyyes::thumbsup:

Having worked extensively under RI fire alarm code rules, I can say all of them are a pointless waste of time.

But in Massachusetts and Rhode island

Black is negative red/white is positive.
Generally?

 

[gadfly56]

But in Massachusetts and Rhode island

Black is negative red/white is positive.
Generally?

Do you mean as a matter of practice or a matter of code?

 

[jumper]

Do you mean as a matter of practice or a matter of code?

What about local/state amendment? Just curious.

 

[gadfly56]

What about local/state amendment? Just curious.

For MA and RI I'd have to look that up. I've got more than enough to keep me busy at the moment.

 

[jumper]

For MA and RI I'd have to look that up. I've got more than enough to keep me busy at the moment.

Are you saying that you making a living is more important than answering my silly questions?

Well....

 

[infinity]

We always use the black as the negative which is common for DC circuits. Why would you use anything different?

 

[peter d]

But in Massachusetts and Rhode island

Black is negative red/white is positive.
Generally?

In the RI code:
SLC - red is positive, black is negative

NAC - blue is positive, white is negative

There are other codes for speakers, door holding circuits, 24 volt aux power, etc but those are the main ones.

 

[juz4kix]

In MD the common LV rule of thumb is the darker wire is the negative. I have had situations where I have splices black to red and red to white in the same box. I try to stay consistant with wire suppliers for the entire job but on a retro fit, you gotta do what you gotta do.

 

[Strathead]

In MD the common LV rule of thumb is the darker wire is the negative. I have had situations where I have splices black to red and red to white in the same box. I try to stay consistant with wire suppliers for the entire job but on a retro fit, you gotta do what you gotta do.

That is generally what we try to do on the jobs I work. The darker color is negative. So, brown orange, brown negative, blue yellow, blue negative, etc.