Heads
Our 1991 P42 came equipped with two electric raw water flushing toilets. A bit noisy, but only during flushing. We've owned Belle-Vie since 2002 and sailed her thousands of miles. Each season we cruise for two months at a time all in PNW waters. These original toilets (Jabsco I think) always work, never clog and do a splendid job for which they were designed. I'll check the amp meter the next time to confirm this, but our model seems to draw closer to ten amps while flushing. Each flush is maybe six seconds max.
But then our nine year old granddaughter guest for a two week cruise, who was accustomed to using wet wipes, even when we talked to her about the proper use of the toilets, refused to break her habits, until the verbal alarms went off, did she decide to change. The macerating head motor did finally chew the material enough to send it on its way to the holding tank so that the skipper avoided tearing the system apart.
We've had manual heads before and they work for the most part. But just like the out houses, they worked just fine until the flusher came along. I really like the reliability of our electric system.
Terry Cox