[Shop-talk] Electrical install questions

[Gordie Bird]

My pull out handle contains 2 fuses... 


Are fuses required? I've seen plenty that are just a pull-out handle... 
On Jul 31, 2015 11:36 PM, "David Scheidt" <dmscheidt at gmail.com> wrote: 

> On Fri, Jul 31, 2015 at 6:15 PM, Steve Hammatt, Mount Vernon WA USA 
> <gsteve at hammatt.com> wrote: 
> > Need to hook up home central a/c located in my (temporary) shop/garage. 
> > New shop and extra garage space is to be soon added to our property. 
> > The installation will be handled by a local HVAC contractor (using an 
> outside 
> > electrical contractor) or option is to allow the homeowner (me) to 
> supply the 
> > power from the panel to the electrical shutoff mounted on the outside 
> wall 
> > of the garage, next to the condenser. We have a dedicated 30A 240V 
> circuit, 
> > previously used for an electric clothes dryer (now switched to gas) that 
> > goes up and through the garage attic trusses (above the garageb s drywall 
> > ceiling) 
> > toward the houseb s laundry room. My thought is to interrupt the run to 
> the 
> > dryer, terminating the run toward the no longer being used dryer, and 
> install 
> > a J-box to make a new run to the adjacent garage wall for the a/c unit. 
> I 
> > plan 
> > to bore through the double top plate and run the Romex down through the 
> wall 
> > and through to the outside where it would be connected to the switch box. 
> > Here are my questions: 
> > 1. Planning 2.5 ton 13SEER unit. What Romex wiring size can I run? 
> Itb s 
> > about a 
> > total of 50b . 
> 
> 30 amp breaker requires 10gauge wire, which will provide a 3% voltage 
> drop at about 100 feet. 
> 
> 
> > 2. I understand that the J-box in the attic storage space must be easily 
> > accessible. 
> > Any other placement requirements? 
> > 3. Any recommendations for the outside switch box? Is there a design 
> for 
> > going through a siding/OSB exterior wall? 
> 
> I expect they want a standard a/c disconnect, with fuses. There are 
> versions that feed through the back, from through the wall. 
> 
> > 4. Any nailing recommendations? Ib m familiar with not nailing 
> (staples) 
> > too 
> > tight on the Romex. Spacing suggestions? 
> 
> Minimum spacing is specified by the NEC. basic rule is no more than 
> 4.5 feet apart, within one foot of any box or fitting, and within 6 
> inches of a single gang box without a clamp. Also, wire should be 
> parallel with the studs (where that makes sense, of course), and needs 
> to be 1 1/4 away from the edge. If it can't be, it has to be 
> protected from nails by a plate, sleeve, or in conduit. There are 
> additional complications, but if you follow that, use sense, you'll be 
> fine. 
> 
> 
> -- 
> David Scheidt 
> dmscheidt at gmail.com 
> _______________________________________________ 
> 
> Shop-talk at autox.team.net 
> Donate: http://www.team.net/donate.html 
> Suggested annual donation $12.96 
> Archive: http://www.team.net/archive 
> Forums: http://www.team.net/forums 
> Unsubscribe/Manage: 
> http://autox.team.net/mailman/options/shop-talk/fishplate@gmail.com 
_______________________________________________ 

Shop-talk at autox.team.net 
Donate: http://www.team.net/donate.html 
Suggested annual donation $12.96 
Archive: http://www.team.net/archive 
Forums: http://www.team.net/forums 
Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/mg_garage@comcast.net