Wrong Wires Spec'ed

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mstrlucky74

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Location
NJ
Came across this on drawing. Obviously 2 phase conductors is wrong. Am I missing something?


Furnish and install 2#8 THWN in 3/4" RGS to the west and east chiller plants. Shall include new 30A-2pole GFEPD breaker
with 30mA trip.

BTW I think this is for heat trace
 
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infinity

infinity

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Location
New Jersey
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I don't see anything wrong, you have a 1Ø circuit with a 2-pole OCPD which uses 2 condcutors. The metallic conduit is the EGC.
 
jumper

jumper

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3 Hr 2 Min from Winged Horses
roger said:
I don't think that is the case but, considering heat trace where would the electronics be in the circuit?



Roger
Click to expand...

I was spacing out.:slaphead:
The line side neutral is the pigtail off the breaker. It must be hooked up, but a load neutral is not needed.
The electronics I was referring to we're the internal parts of breaker.
 
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mstrlucky74

Senior Member
Location
NJ
jumper said:
I was spacing out.:slaphead:
The line side neutral is the pigtail off the breaker. It must be hooked up, but a load neutral is not needed.
The electronics I was referring to we're the internal parts of breaker.
Click to expand...

Thanks everyone. Can you explain a little more about the neutral. I'd like to be clear so I understand and can explain myself. Not clear on how your saying the neutral is "derived". Thanks.
 
jumper

jumper

Senior Member
Location
3 Hr 2 Min from Winged Horses
mstrlucky74 said:
Thanks everyone. Can you explain a little more about the neutral. I'd like to be clear so I understand and can explain myself. Not clear on how your saying the neutral is "derived". Thanks.
Click to expand...

I never mentioned " derived". I was saying that the white pigtail on the breaker must be hooked up to the neutral bar for the breaker to work, but a neutral conductor does not need to be ran to the load.

I erred earlier by saying to run a line side neutral, when that is what the white pigtail is.
 
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mstrlucky74

Senior Member
Location
NJ
jumper said:
I never mentioned " derived". I was saying that the white pigtail on the breaker must be hooked up to the neutral bar for the breaker to work, but a neutral conductor does not need to be ran to the load.

I erred earlier by saying to run a line side neutral, when that is what the white pigtail is.
Click to expand...


Thanks. Just not familiar with the white pigtail on breaker. Never heard of that. Thanks again.
 
kwired

kwired

Electron manager
Location
NE Nebraska
jumper said:
I never mentioned " derived". I was saying that the white pigtail on the breaker must be hooked up to the neutral bar for the breaker to work, but a neutral conductor does not need to be ran to the load.

I erred earlier by saying to run a line side neutral, when that is what the white pigtail is.
Click to expand...
Unless you have a plug on neutral style;)
Thoughn EPD's may not be available in plug on neutral.

OP didn't make it clear if the EPD is at the supply or load end of the conductors in question. If EPD is on the supply end no neutral is needed if the load doesn't utilize a neutral. If the EPD has a "line side neutral connection" then it likely needs a neutral supplied to it because the electronics within operate at 120 volts. Don't know what is common for EPD's but there are GFCI breakers that are straight 240 volts with no neutral terminal or pigtail.
 
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