Sizing of fuses in service disconnect

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david luchini said:
Yes, perhaps, but people share additional information in other posts. This one...



made it clear that the taps were feeder taps.
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It's probably implied, but "400A Disconnect" does not necessarily mean OCPD; that could be a 400A knife-switch.

Mark
 
WarrMann said:
...but let me unbuckle my belt anyways.


We're all big boys here. No need to use platitudes with me. Its like saying "no offense", than offending. Nobody needs that in their life.

But I see and understand everyone's point. It's well recieved. I wouldn't be on this forum if i wasn't interested "learning experiences". I'll be having a few discussions about this tomorrow.

Worst case Ontario ill be buying a 1,000 bucks worth of sqaure d main breakers and making the rounds. As you alluded to, my liability insurance will only cover so much stupid




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This is similar to certain other issues I have seen in various locations over the years. In Oakland CA in the early 1990's and before they didn't enforce the # of current carrying conductors in a conduit. How ever many you could fit per tables was it. San Francisco, across the bay started enforcing this rule. I had personal discussions with the Oakland inspectors every morning over coffee and I was part of the discussion that lead to this being enforced in Oakland.

Here in Florida, through at least the 70's it was common practice in several different jurisdictions I have worked, to put a meter (no disconnect) on the outside of a house and run 3 conductors through the attic for 20-40 feet to the main panel location. Neutral and ground bonded together in the panel. These have not been allowed by code for many decades at least.

I have seen you express the word "opinion". This issue isn't an opinion, nor is it a grey area subject to AHJ approval. It is a clear rule that is just currently being overlooked in your jurisdiction. It is easily corrected in future installations by including a main breaker. It is likely that pointing it out to your inspector the first time you comply with it will result in your competition learning the lesson a harder way.:p:angel:
 
WarrMann said:
Ok. Tap rule states RATING of EQUIPMENT containing an over current device(S). My panel is the equipment that is rated, and i have overcurrent devices. My 400 amp is a single point of disconnect, so no more than 6 disconnects.

You've got me a little on the 225 mlo when i use 3/0, and on a 400 amp disco. But that's just what came from the supply house when i ordered a 200 MLO.

As i said, i understand your concern in regards to 408, and i respect your opinion. You give good advice on this forum. But for this one, you can tell me im wrong till your blue in the face. Ill keep doing it till they take the (S) out of the 10ft tap rule

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You may not be in violation of 10 foot tap rule, I would think you must still have situation that won't allow more than 200 amps (based on having 200 amp feeder tap conductor). This likely means a 42 circuit panel filled with 20 amp breakers likely isn't ordinarily going to assure you can't overload the feeder tap conductor.

Then on top of that you still don't have proper OCP on the panelboard as others have been mentioning.
david said:
Lets keep in mind the OP question has to do with service entrance conductors.

Now the other parallel discussion seems to be dealing with article 240/ There are no Tap rules when it comes to service entrance conductors
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OP question is about feeder/feeder tap conductors between the service disconnect and some main lug panelboards.
 
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