240V circuit fuses

Originally Posted By: Greg Fretwell
This post was automatically imported from our archived forum.



NFPA had a chance to fix this in the 99 ROP but they let the intent of the 96 exception stand (see 10-101) Borethick did express his concern about line to line loads but the proposal went ahead 11:1


Originally Posted By: jtedesco
This post was automatically imported from our archived forum.



Jeff: Your pictures show different connections where the wires are reversed?


I get it now, new door unit!! ![icon_rolleyes.gif](upload://iqxt7ABYC2TEBomNkCmZARIrQr6.gif)





--
Joe Tedesco, NEC Consultant

www.nachi.org/tedescobook.htm

Originally Posted By: Greg Fretwell
This post was automatically imported from our archived forum.



I bet it is 2 different safety switches.


Niether installer knew about reidentifying the white wire in that cable.


Originally Posted By: jpope
This post was automatically imported from our archived forum.



Greg Fretwell wrote:
Niether installer knew about reidentifying the white wire in that cable.


I called that out on an 11 month warranty inspection and was "jacked" by the builder. The only code reference I could think of at the time was 200.7C

Was I close? Is there a more applicable reference for "permanent re-identification?"

He left me alone after that ![icon_biggrin.gif](upload://iKNGSw3qcRIEmXySa8gItY6Gczg.gif)


--
Jeff Pope
JPI Home Inspection Service
"At JPI, we'll help you look better"
(661) 212-0738

Originally Posted By: jpeck
This post was automatically imported from our archived forum.



200.7©


That's it.


--
Jerry Peck
South Florida

Originally Posted By: jpope
This post was automatically imported from our archived forum.



Guess you guys a rubbing off on me icon_cool.gif


I think I'll go take a shower


--
Jeff Pope
JPI Home Inspection Service
"At JPI, we'll help you look better"
(661) 212-0738

Originally Posted By: John M Borchers
This post was automatically imported from our archived forum.



Since there are 125V fuses in the panel and the white isn’t remarked are you sure its not a 120V circuit?


Originally Posted By: jpope
This post was automatically imported from our archived forum.



The appliance was a 120/240V appliance. . . you tell me.



Jeff Pope


JPI Home Inspection Service


“At JPI, we’ll help you look better”


(661) 212-0738

Originally Posted By: John M Borchers
This post was automatically imported from our archived forum.



Have to measure the voltage going into the disconnect or trace it back to the main panel.


OR

At 30 Amp 120 V that would be a 3.6 kW compressor. = 4.8 HP (2-3 BR Home?)
At 30 Amp 240 V that would be a 7.2 kW compressor. = 9.7 HP = about a 5 Ton Compressor (55000 BTU) @ 10 SEER (4-5 BR Home Avg Sized?)

Does the label on the compressor state the wattage or horsepower?


Originally Posted By: jpope
This post was automatically imported from our archived forum.



It may have at one time. It had been painted over many times so I had a difficult time getting the information that I did.


Besides, this was only a $275 inspection. What you described sound too much like work ![icon_wink.gif](upload://ssT9V5t45yjlgXqiFRXL04eXtqw.gif)


--
Jeff Pope
JPI Home Inspection Service
"At JPI, we'll help you look better"
(661) 212-0738

Originally Posted By: bbadger
This post was automatically imported from our archived forum.



This one kept bothering me so I had to ask for other opinions. I got one from an Electrical Engineer that seems IMO to have a firm handle on it.


The question I asked was this

Bob Badger wrote:
Can we feed a 30 amp 240 volt dryer from two plug type fuses.

Here is the relevant code section, what I do not understand is if we need to meet both requirements of 1 and 2 or do we only have to meet 1 or 2.


240.50 General.
(A) Maximum Voltage. Plug fuses shall be permitted to be used in the following circuits:

(1)Circuits not exceeding 125 volts between conductors

(2)Circuits supplied by a system having a grounded neutral where the line-to-neutral voltage does not exceed 150 volts



And the response.

Charlie B wrote:
It is an ?or,? and the language leaves no doubt or room for interpretation. Why say I so? Because of the single letter ?s? that appears at the end of the word ?circuit,? causing the word to change into its plural form, ?circuits.?

That use of the language tells us that the two things that follow, thing 1 and thing 2, are different circuits.


So I will stick with my opening post and say this is compliant, ![icon_smile.gif](upload://b6iczyK1ETUUqRUc4PAkX83GF2O.gif) however I will admit that I was unaware of this code section until Jerry P. brought it up.

Bob


Originally Posted By: bbadger
This post was automatically imported from our archived forum.



jpope wrote:
Guess you guys a rubbing off on me ![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif)

I think I'll go take a shower


Yuck.

I think I need to shower now.