25A breaker on #12 Romex?
#1
Member
Thread Starter
25A breaker on #12 Romex?
Can I use a 25A breaker on #12 wire in my workshop to power a 4.8hp jointer/Planer? The planer says that it runs at 16-17 amps depending on how big a cut you are making I guess. I told the rep for the equipment that I have a 20A 240V circuit. He said that I could get a 25A breaker for #12 wire and that would handle the load for starting up the machine, then the current draw would go down to 16 or 17amps.
Is this safe and allowed by code?
Otherwise can I add a 30amp circuit in my Utility room across the hallway and run a #10 extension cord when the jointer/planer is in use. This is a basement shop, not a commercial shop. And I only periodically use the jointer/planer. Normally the extension cord would be coiled and hung on the wall.
Thanks,
Is this safe and allowed by code?
Otherwise can I add a 30amp circuit in my Utility room across the hallway and run a #10 extension cord when the jointer/planer is in use. This is a basement shop, not a commercial shop. And I only periodically use the jointer/planer. Normally the extension cord would be coiled and hung on the wall.
Thanks,
#3
Member
Thread Starter
It’s a dedicated circuit for my table saw and would be for my planer as well. I only use the circuit for 220v tools in the shop.
Thank you!
Thank you!
#5
Member
Because motors have starting current much higher than continuous running current, you are allowed to use larger sized breaker.
I think it was 250% of motor's FLC (full load current). I don't deal with motors often, so I'm not sure of exact code but I'm sure 25A breaker on 12AWG is fine as that is just a next size up. It might still trip the breaker if the motor starts with a load, but you shouldn't be starting jointer/planer with a load in the first place.
I think it was 250% of motor's FLC (full load current). I don't deal with motors often, so I'm not sure of exact code but I'm sure 25A breaker on 12AWG is fine as that is just a next size up. It might still trip the breaker if the motor starts with a load, but you shouldn't be starting jointer/planer with a load in the first place.
#9
Member
Thread Starter
I’ll find out the question about the cord and plug. And ask about the. HACR breaker and if that would work. (I don’t know what that is, but I assume its a breaker with a delayed trip for startup).
The tool spec call for a 30A breaker.
If the tool runs on a 20A HACR is it dangerous to use it since it calls for a 30A? Or will I just run into it tripping the breaker?
The tool spec call for a 30A breaker.
If the tool runs on a 20A HACR is it dangerous to use it since it calls for a 30A? Or will I just run into it tripping the breaker?
#10
Member
The tool spec call for a 30A breaker.
#13
Member
Thread Starter
Learned from the manufacturer that the planer comes without any cord attached. Owner needs to install their own cord and plug. Does that change anything??
thank you.
thank you.
#14
Member
Doesn't change the fact that you need to follow manufacturer's instructions. If they say install on a 30 amp circuit, then by code you must install on 30 amp circuit.
CasualJoe
voted this post useful.
#16
Member
Thread Starter
I finally pulled the trigger on this jointer/planer combo.
I spoke with the mfr rep and he reiterated that 25amp breaker has been used on 12/2. Maybe illegally/improperly?
I looked up the specs for Romex Simpull 12/2 wire and it states the max Ampacity is 20 amps so I think the 25 amp breaker is out.
What if I used a High Initial Demand 20 amp dual pole breaker on the 12/2 circuit and plug the jointer in and see if it trips the breaker or not? Would it be reasonable to assume that if it doesnt trip the breaker that I would not be damaging the wiring?
The breaker I’m talking about is a GE THQL2120HID
alternatively, I would Install a proper 30 amp outlet with 10/2 Romex in my utility room and run a 50’ extension cord which is 10/3 SOOW with L6-30 locking connectors for when I use the Jointer/Planer.
I spoke with the mfr rep and he reiterated that 25amp breaker has been used on 12/2. Maybe illegally/improperly?
I looked up the specs for Romex Simpull 12/2 wire and it states the max Ampacity is 20 amps so I think the 25 amp breaker is out.
What if I used a High Initial Demand 20 amp dual pole breaker on the 12/2 circuit and plug the jointer in and see if it trips the breaker or not? Would it be reasonable to assume that if it doesnt trip the breaker that I would not be damaging the wiring?
The breaker I’m talking about is a GE THQL2120HID
alternatively, I would Install a proper 30 amp outlet with 10/2 Romex in my utility room and run a 50’ extension cord which is 10/3 SOOW with L6-30 locking connectors for when I use the Jointer/Planer.
#17
High Initial Demand 20 amp dual pole breaker