kwired
Electron manager
- Location
- NE Nebraska
That makes the 6AWG portion a feeder. The branch circuit(s) is after the final overcurrent device.
insulated grounding conductor in hottub installation
- Thread starter liquidtite
- Start date
- Status
That makes the 6AWG portion a feeder. The branch circuit(s) is after the final overcurrent device.
K8MHZ
Senior Member
- Occupation
- Electrician
So that makes the conductors from the breaker panel to a furnace that has an SSU 'feeders'?
View attachment 6594
- Location
- Massachusetts
I would love to see a packaged hot tub that requires a 50 amp circuit and does not have any additional OCP in it.
- Location
- Massachusetts
Why not?
curt swartz
Electrical Contractor - San Jose, CA
- Location
- San Jose, CA
- Occupation
- Electrical Contractor
Bob, I don't have time to look it up right now since I'm already late to an appointment but there is an exception that allows any chapter 3 wiring method with an insulated or covered EGC to supply a packaged hot tub. Since the OP is supplying a panel that is not part of the hot tub this exception would not apply and NM cable would not be permitted.
K8MHZ
Senior Member
- Occupation
- Electrician
Hmm......
What about the conductors to a power strip with a circuit breaker in it? Are they feeders, too?
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I think he was saying that the disconnect does not need OCPD. The GFCI can be in the main panel. I often just put in an unfused pullout with a 50 amp GFCI in the panel.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
That is not an NEC application. I agree with the fact that the wire to a furnace is a feeder if there is a fuse at the disconnect. Unless it is considered a supplemental OCPD then the branch circuit goes from the fuse to the furnace. The other part is the feeder.
I tried to get this changed but I somehow I wrote the proposal and never sent it in.:dunce:
kwired
Electron manager
- Location
- NE Nebraska
I know I have hooked up hot tubs that needed a single 50 amp circuit before. There may have been additional fuses within the control unit, but as far as NEC goes this unit is fed with a 50 amp branch circuit and not a 50 amp feeder.
dana1028
Senior Member
- Location
- San Francisco Bay area
Then what?? We'd have to come up with a different subject to debate?:blink:
dana1028
Senior Member
- Location
- San Francisco Bay area
ummm - you don't need to install SSUs anymore [for about 15-20 yrs now]. Furnaces are now [and have been for quite a while] internally protected with a fuse [and reset button...kind of like the overload protection on a garbage disposal].
- Location
- Massachusetts
I know that.
I am saying there is OCPDs in the unit and as clear as some seem to feel it is it is not that clear to me.
- Location
- Massachusetts
Hmm ... we were not talking about plug in devices were we?
- Location
- Massachusetts
And that is the point that we disagree.
- Location
- Massachusetts
That exception applies to branch circuits, it is not as clear to me as the others that a 50 amp circuit to a hot tub with built in OCPDs is a branch circuit.
kwired
Electron manager
- Location
- NE Nebraska
ART 100 definitions (2008 NEC):
Branch Circuit. The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).
Feeder. All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device.
Outlet. A point on the wiring system at which current is taken to supply utilization equipment.
Not saying you are necessarily wrong but where is the outlet(s) located for a 50 amp single supply hot tub? If there is fuses in the control panel for the tub is outlet(s) somewhere within the unit or is the outlet(s) where field wiring ends?
From the way I read it the branch circuit is between wherever the outlet(s) is located and the last overcurrent device ahead of it.
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