|Forum topic by jmos||posted 06-09-2012 02:59 PM||2765 views||0 times favorited||30 replies|
06-09-2012 02:59 PM
I’ll apologize in advance for being long winded, but I want to try to provide enough info to get a meaningful answer.
I’m pulling together the details for installing a dust collection cyclone in my shop, which requires a new 30amp 220v breaker. My house is fairly new (~6yrs old). When the place was wired they installed a 200amp 40 slot panel. They only left two open slots, which I’ve filled with 110v circuits for my basement/shop. So, I need more space for breakers. There is room immediately below the main panel to mount another (smaller box). I’m thinking 10 or 12 slots and 60amp capacity should do it. I’m contacting licensed electricians and I was hoping to get some details from some knowledgeable folks here so I know if they are blowing smoke at me or not.
Can you just put in a new panel with individual breakers below the existing box (using the existing house main 200amp breaker), or does the sub panel need it’s own main? If it does, should this main be located in the new box, or in the main box (i.e., remove two circuits from the main box, install a 60amp 240v breaker and use that to feed the new box)? If it has it’s own breaker, do you tap the power above the main 200amp breaker, or below?
Also, since this is in a basement (but will be mounted near the ceiling) does the new 30amp 220v circuit need to be GFCI? If so, is it best to get a GFCI breaker, or install a GFCI outlet?
Is there anything else I should know to ask these guys about this?
So far I got one quote, over the phone, for $680; sound reasonable? Seems high to me. Looking at HD’s website, a Seimens box (matches the brand I already have) is about $40, and a 60 amp breaker is around $30 (not GFCI); call it $100 in parts, I’m guessing no more than 3 hours in labor, so $580 in labor seems high. Am I missing something, or are they going to charge me for a full day since they probably can’t get another job for the rest of the day?
I know that’s a lot to ask, and I appreciate any assistance anyone can provide. Thanks in advance. (Oh, I’m in New Jersey if it matters.)