Emergency Disconnects Again

[tortuga]

UL 67 applies to the meter disconnect assemblies.

Did see anything other than in 869A.
What do you think of the house garage scenario proposed in post #51?

 

[tortuga]

Here is another example of a more typical install:
Say we have a 320A meter on a detached garage and one 200A disconnect for the garage & well pump and one 200A breaker for a feeder the house.
The conductors to the house would then be a feeder.

Now omit the 200A breaker and just continue the 3-wire conductors to the house, then they would be service conductors, still legal.

Now do you agree if we add back the 2nd 200A disconnects at the garage as an 'emergency disconnect' for the house the EC could still run a 3-wire feeder to the house? And it does enhance safety because now if there is a problem at the house the fire dept can kill the house breaker on the garage without pulling the meter and killing the water.

 

[jap]

I say pull an EGC with anything past the first means of overcurrent protection.
That way you've got options.

Jap>

 

[don_resqcapt19]

.....

Now do you agree if we add back the 2nd 200A disconnects at the garage as an 'emergency disconnect' for the house the EC could still run a 3-wire feeder to the house? And it does enhance safety because now if there is a problem at the house the fire dept can kill the house breaker on the garage without pulling the meter and killing the water.

Not sure why the fire department would care about local water supply at a dwelling unit. In areas without hydrants, we bring our own water. The units that are dispatched will differ between location that has hydrants and one that doesn't.

If the disconnect on the garage is marked emergency disconnect and is within sight from the house it would be permitted.
As far as pulling meter, that is frowned on by most utilities and fire fighters around here are taught not to do that. A meter is not a load break device, and with fire damaged wiring and equipment there could be a large current flow.

One of our local utilities, when asked for a response to a dwelling unit fire, will remotely open the disconnect that is in most smart meters, They will still respond to the scene as often the service drop will be opened at the pole to take all of the power off the building.

 

[darkenergy]

How Fortuitous!

Can NOT find the post using a breaker to satisfy 230.85. Post in question had a picture, believe only bonding strap (think 2 were used)
3 wire feed to interior panel where 'Normal/Standard' 3-wire GEC/Ground rods were landed. (Don't forget 250.24(A)(4) if I'm remembering correctly. (Land the GEC on the Equipment Ground Bar and You must install wire jumper of the appropriate size to the Grounded Conductor/Neutral bus)

Think 230.82 (10) referenced 230.85(B)(2) & (B)(3)
Labeled in accordance with 230.85(E)(1)(3)

Typically tell 'em to use combo metersocket/disconnect, and of course ALL grounding occurs there, but apparently $$$ is getting really tight for everybody.

ANY guidance/Opinion/insight MUCH appreciated.

Thank You for Your time/effort in advance.