60A Non-Fused Disconnect Wiring
#1
10-07-16, 07:46 PM
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60A Non-Fused Disconnect Wiring
In a 20A Non-Fused Disconnect, how do you wire the ground? I know the Red/Black go to the main posts in and out. The Neutral goes to the bus below (right), but do you just splice the grounds together or ground the incoming to the box and do the same for the outgoing?
This is the background if you are interested.... I am tying into an unused outdoor box wired for 240V / 60A. The previous homeowner had a hot tub. The purpose of my tie-in is to extend power to an external workshop sub-panel. The new work is 6 ga, THHN in conduit no less than 18" deep.
Thanks for you comments!
This is the background if you are interested.... I am tying into an unused outdoor box wired for 240V / 60A. The previous homeowner had a hot tub. The purpose of my tie-in is to extend power to an external workshop sub-panel. The new work is 6 ga, THHN in conduit no less than 18" deep.
Thanks for you comments!
#2
10-07-16, 08:49 PM
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You can use lugs and connect directly to the metal box or purchase a ground bar.
The ground bar bolts directly thru the metal box.
The ground bar bolts directly thru the metal box.
#4
10-07-16, 10:36 PM
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no grounding rod required at the disconnect I am assuming
#6
10-08-16, 02:47 PM
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In a 20A Non-Fused Disconnect, how do you wire the ground?
The Neutral goes to the bus below (right), but do you just splice the grounds together or ground the incoming to the box and do the same for the outgoing?
#7
10-08-16, 09:24 PM
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Joe - thanks for the additional info. I am coming off of the main panel (60A Double pole) to the 60 amp non-fuse disconnect. From the d/c I am continuing on to the sub panel in the workshop. After looking at the d/c a little closer today, I am concerned that I may be headed down the wrong track. The connections for two hot wires are pretty straight forward. Below that is a bar that accepts two wires - one in and one out. There is no spot to add a ground bar.Since this will be coming off of a breaker in the main, why not just splice the wires together in a junction box and eliminate the disconnect all together? I will also have a disconnect on the sub panel (100A) in the workshop. I understand the 100A subpanel is overkill since there is only 60A coming into the shop, but I need the extra space in the sub panel... Thanks!
Last edited by James R. Davis; 10-08-16 at 09:50 PM.
#8
10-08-16, 10:13 PM
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As Joe wrote that is a ground bar. It has no insulators to isolate it. Just connect the neutrals with a split bolt connector and wrap with tape or use a Polaris™ connector (more expensive). (In some places it is claimed Ideal blue will take two #6.)
