Separate structure with existing 3 wire 240v service

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Dzboyce said:
I hadn't thought of using a step-down transformer to eliminate the need for the neutral wire from the main panel to the sub panel. I'll have to remember this.

Of course on new installations, I'm going to pull both an equipment grounding conductor and a neutral wire, along with the electrical conductors.

However my State Electrical Inspector is also going to require the following:

1. a 125 V single phase recepticle outlet, 210.50G2 or 210.64
2. Interior and exterior lighting outlets 210.70
3. Metallic well casing grounded 250.52A8

I WILL get a correction notice if I don't do all the above.
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Though on a new install I would likely be putting a 15/20 amp 120 volt receptacle there anyway, when is this well house a dwelling accessory building vs just a closure for housing the equipment for the well?

Same goes for when is lighting outlet required.

210.64 IMO doesn't apply unless there is service equipment involved.

Metal well casing is outside the scope of this discussion, but needs to be bonded.
 
iwire said:
Ah .. SE cables are in chapter 3 and they have bare neutrals in some cases ....
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Yes, but only grounded current carrying conductors.
The fact that special recognition is given to uninsulated grounded conductors again implies indirectly that uninsulated ungrounded conductors are never allowed under NEC jurisdiction.

Although I suppose there is no explicit mention that the concentric neutral in SE cannot instead be used for an ungrounded conductor.
It is arguable whether K&T is insulated to the same degree as modern wiring, but it gets special mention in the NEC.

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GoldDigger said:
Yes, but only grounded current carrying conductors.
The fact that special recognition is given to uninsulated grounded conductors again implies indirectly that uninsulated ungrounded conductors are never allowed under NEC jurisdiction.

Although I suppose there is no explicit mention that the concentric neutral in SE cannot instead be used for an ungrounded conductor.
It is arguable whether K&T is insulated to the same degree as modern wiring, but it gets special mention in the NEC.

Sent from my XT1585 using Tapatalk
Click to expand...

Think ranges and clothes dryers :thumbsup:
 
electrofelon said:
Can we run bare conductors on poles like utilities do? I always assumed so, but am not certain.
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Unless you find a section that specifically allows it, I don't think so.

I say that based on what is said in 310.106(D): "Conductors, not specifically permitted elsewhere in this Code to be covered or bare, shall be insulated."

Informational note that follows does refer us to 250.184, but that is in the over 1000 volts section of 250, and is only for solidly grounded neutral conductors.
 
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