Anyone know the codes that govern accepted breaker ties. I've seen nails, 12g wire, etc. I know those aren't right.
I thought i remembered a code description of "common trip" for 220V breakers ?Some (I won't say who) have suggested the only reason for a breaker handle tie is to make manual tripping of both ungrounded connectors necessary. They go on to say that because the nail, wire, whatever identifies the two legs of the circuit a manufacturer's tie isn't needed. Overload tripping of both circuits will not occur but that's OK.
I agree but sometimes you get stuck on a job and you must improvise. New but defective breaker. Unexpected brand breaker. etc.... How many breakers can one keep in the truck? I try to keep 2 - double poles of the popular brands and sizes.I don't think we need them period. If the job can't afford a 2-pole breaker, there's something wrong.
You hate to hear it but it happens a lot. Obviously you did your employer right, **** that contractor.This account is a bit of the opposite.
A couple of years ago I started with this company and the Maintenance supervisor is the only one that really knew my background.
Our Maintenance supervisor was out because he tested postive to the virus.
The Plant Manager is now "supervising".
Walked up on a conversation between the Plant manager and an electrical contractor they had used previously.
The only space left in the panel had a two pole 20 amp bolt-in breaker in it.
The contractor was explaining he would have to remove the 2 pole breaker and install two 1 pole breakers.
If he did it live, he would have to use arc flash gear and have to charge extra for "hazardous work".
If the panel was shutdown it would be safer and cost less.
OK, I'll agree with shutting down, but now you would need the production lines to be shutdown.
Both methods cost money.
I was asked what would I recommend?
This I said, and took out my tweeker screw driver, and popped the breaker tie piece off, there you are....2-1 pole breakers.
Contractor was PO'ed.
I really didn’t want this guy back in "MY" plant, he took advantage of the plant with some of his previous work, prior to my arrival.
He was hired to run power to five new exhaust fans in a warehouse expansion.
Five conduit runs, five roof disconnects, five 3 pole breakers.
What did he not install?
Five motor starters with overload protection.
I figure he took the company for about $5000.00 for the starters he didn't install.
Now after a storm that caused a loss of a phase, we have 5 rooftop exhaust fans with burnt out motors.
Also discovered the firestats were not wired up correctly, of course without a starter to wire them to, what do you do?
I know what you don't do.
He ran one phase of the 480 through the firestat which is only rated for 120.
Did I do the contractor wrong or did I do my employer right?
Plant manager was happy.
I agree, the tie handle should have stayed on, unless you needed to be switching either one without the other.The 2 pole breaker with the factory installed handle tie is almost certainly common trip. If one pole trips, the other will also trip.
But I think you did the right thing.
Most 2 pole breakers, depending on the design, with the handle tie removed will act as two separate breakers and will trip separately from one another.The 2 pole breaker with the factory installed handle tie is almost certainly common trip. If one pole trips, the other will also trip.
But I think you did the right thing.
My experience has been that just about every factory made 2 pole is common trip, meaning that if one pole trips, the other will also.Most 2 pole breakers, depending on the design, with the handle tie removed will act as two separate breakers and will trip separately from one another.
A multi pole breaker with a single handle cannot be seperated.
I did not think that they were tied inside until I drilled the rivets and saw the trip mechanism between the two.My experience has been that just about every factory made 2 pole is common trip, meaning that if one pole trips, the other will also.
It's not the handle tie that connects the 2 poles, it's an internal bar that you can't see.
With the handle tie removed, each pole can be manually turned on and off independent of the other but tripping is different.