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Help! I've been following this thread and becoming more and more confused / concerned. The manual for my Epic states: "A pressure wire connector is located on the exterior of the contorl box. The pressure wire connector should be bonded with at least #8 AWG copper wire to any metal ladder, metal water pipe, common bonding grid (reinforced concrete slab, ground plate beneath the spa), or any other metal within 5' of the spa." My problem is I won't have any metal within 5' of the spa. What shoud I do??? Is this an ABSOLUTE must???Thanks in advance!drprwnap