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#1
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Use of AC breakers as switches
Our boat has a small Blue Seas 8027 AC distribution panel with main two pole
breaker and 6 circuit capability. One circuit feeds the Truecharge 10TB charger and another will feed a hot water heater (1200watt). Others only feed outlets. The Truecharge doesn't have an integral on-off switch . So, as with DC panels, the breaker is used as a switch. When I install the hot water heater, I was planning on hooking it direct to the panel and using the breaker as the switch. But, then I seemed to recall that breakers shouldn't be used as switches on 120V systems? But thinking about our house that has electric baseboard heating. There are no disconnect switches other than the thermostats and most of them have no OFF position. The water heater will have a thermostat too! The water heater manual shows a fuse on the heater side of a double pole switch (switches both sides of AC). I could install a switch between the heater and the breaker panel. But perhaps the breaker and the double pole main disconnect switch serve the same purpose? Then there is the charger which has no separate switch. GBM |
#2
posted to rec.boats.cruising
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Use of AC breakers as switches
AC circuit breakers are either rated for switching duty or they aren't. As
Blue Sea Systems says "Combines switching and circuit protection into a single device" &" Rated Switch Cycles = 10,000@rated amperage and voltage" on the page for their AC circuit breakers they are rated for switching duty. No problem. http://www.bluesea.com/product.asp?P...407&l1=7407&l2 -- Ken Heaton & Anne Tobin Cape Breton Island, Canada kenheaton at eastlink dot ca "GBM" wrote in message ... Our boat has a small Blue Seas 8027 AC distribution panel with main two pole breaker and 6 circuit capability. One circuit feeds the Truecharge 10TB charger and another will feed a hot water heater (1200watt). Others only feed outlets. The Truecharge doesn't have an integral on-off switch . So, as with DC panels, the breaker is used as a switch. When I install the hot water heater, I was planning on hooking it direct to the panel and using the breaker as the switch. But, then I seemed to recall that breakers shouldn't be used as switches on 120V systems? But thinking about our house that has electric baseboard heating. There are no disconnect switches other than the thermostats and most of them have no OFF position. The water heater will have a thermostat too! The water heater manual shows a fuse on the heater side of a double pole switch (switches both sides of AC). I could install a switch between the heater and the breaker panel. But perhaps the breaker and the double pole main disconnect switch serve the same purpose? Then there is the charger which has no separate switch. GBM |
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