Originally Posted By: jtedesco
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Thanks for taking the time for the NACHI sessions; I wish I could have attended all of yours, but had to spread myself into other disciplines plus your Thursday am 101 class was "closed."
Attached are photos of units from several condos I inspected today.
Note the breaker directory and the breaker sizes-how are a dishwasher and a disposer connected to a 20 amp 240V breaker, if indeed they are [each of these appliances has a plug and each is plugged into the same outlet under the kitchen sink]? Since these units have one heat pump each, what are the 240V "furnace" and 240V "air conditioner" circuits wired to? The only 240v circuits should be range, dryer, heat pump and water heater so it appears there are two too many.
Note the one panel shot with the bonding/ground screw in the bottom of the cabinet.
In these condos the entry cable is Al, the range is Al and the balance is Cu. An alum ground wire goes out to the exterior meter/shutoff breaker/grounding.
|The thought just occurred to me that the individual condo electrical
"main" panels may actually be subpanels to the main panel, which in this part of the country is outside often for fire dept reasons. Outside is the meter group for a building, the ground electrode or two and a main building shut-off breaker. That panel is about 6 feet tall and 2.5 feet wide!
[ Image: http://www.nachi.org/bbsystem/usrimages/P/P0004137.JPG ]
[ Image: http://www.nachi.org/bbsystem/usrimages/P/P0004138.JPG ]
[ Image: http://www.nachi.org/bbsystem/usrimages/P/P0004144.JPG ]
[ Image: http://www.nachi.org/bbsystem/usrimages/P/P0004145.JPG ]
Joe Tedesco, NEC Consultant