Home Improvement → Re: [Electrical] Conduit through brick and block

Already have the pilot hole which currently has an old telephone wire in it.

Don't try to drill with the wire still in there, it will wrap itself around the bit and cause a real PITA.

If you follow he suggestions puil out the wire. Go outside and drill in. Be very sure water can't get inside the box. Backplaster and tar works really well except in wet and extremely cold weather. All you need is one sunny day above freezing, Pull the wire through. Make sure the plaster is dry and the tar is nearly boiling hot. Then connect the box. You will not have a leak.