Wiring A Disconnect Box. Connect the black wires to the disconnect box. @ecnerwal this answer is obviously using “ac” in the “alternating current” sense, not “air conditioner”.
Connect the ground wires to the disconnect box. There are terminals for ground to allow the box to be grounded. #in preparation for installing our mrcool universal heat pump, we needed to have an outside disconnect box.
There are two hot wires and a neutral wire. There are terminals for ground to allow the box to be grounded. Put the outer cover on the disconnect box.
Where to land the wires for the line and for the load. Web if the current draw is 48 amps, you will need a disconnect rated for 60 amps. Step 3 land the ground wires.
Cut enough conduit to reach from the disconnect box to the wiring panel on the air conditioning condensing unit. If running 3 wires in parallel, 2 or 2.5 inches is recommended. We see nm cable in outdoor receptacles etc routinely.
Web the disconnect box typically contains a switch with a handle and a fuse, as well as terminals for wiring. Strip about 1/2 inch of insulation from the ends of the wires inside the disconnect box. Hooking up disconnect box, conduit , connectors, and pull wires.
The line side is the cable supplying voltage from your electrical panel. Web generally the meter box, the disconnect and the main panel all need to be bonded (connected via a ground wire) to the earth ground (one or two buried ground rods or sometimes a buried metal water pipe) through a common ground wire. The terminals for the hots, of course, are to allow the disconnect.
