External voltage can induce signals on these sensing leads that prevent the device working properly.Īny external (interference) voltage with an implanted heart device can have the potential to be serious. The heart produces electrical signals (or action potentials) which need to be reliably detected by the AIMD's sensing leads. The most common of these devices are pacemakers and defibrillators. If someone in the pool (skin will be wet) was to touch (on purpose or accidentally) these connections to the low-voltage luminaire, there could be an external voltage introduced onto the bonding grid and that person in the pool would receive some type of shock, whether mild or otherwise.Īn active implantable medical device (AIMD) is any medical device which is intended to be totally or partially introduced, surgically or medically, into the human body, and which is intended to remain after the procedure. Low-voltage luminaires are commonly listed and wired using prong-type quick connects that are designed to pierce the insulation of the wiring. Providing GFCI protection on the primary side of an isolation transformer will not provide GFCI protection on the secondary side. Now the change allows lights (theoretically) to be right next to the pool, where someone will reach out and touch.
One must remember that the pool water is bonded therefore the person in the pool will theoretically be at the same potential as the bonding grid. The purpose of a pool bonding grid is to abate step and touch voltages (keep everything at the same potential). The problem, as I see it, is that the human is at the same potential as the pool bonding grid. I have put in a proposal to delete it or at least get change or clarification. Don't get too excited about this "great change" just yet.
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