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<blockquote data-quote="tjd999" data-source="post: 197" data-attributes="member: 20"><p>Katodude's first two points were:</p><p>The pool pump is a large draw but has full time power to it (so no need to switch it on and off) and its speed is controlled by the RS-485</p><p>The SWG gets controlled by one relay and is 120v</p><p></p><p> On my DIY Pool Automation sytem, I implemented the following:</p><p></p><p>1. Pool Pump - correct - the RS485 controls my pump speed but what would I do if the pump needs to be worked on? The pump controls, RS485 and voltage power connections, are very close to each other and the pump maker insists you turn off power to pump when opening it up. My voltage to pump goes through a circuit breaker then to the relay and then to the pump. In Florida, the heat is brutal so I shut down power to all relays each night to alleviate this issue. I also monitor the temperature in my PA box to alleviate frying my RPI. If it occurs, I, send myself an email.</p><p></p><p>2. SWG - correct - one relay. Most SWG devices comes either 120 or 240 capable. 240 volts uses less current so it is cheaper to run.</p><p></p><p>I don't mean to be nitpicky but it just shows you the multiple wants/needs of DIYers.</p></blockquote><p></p>
[QUOTE="tjd999, post: 197, member: 20"] Katodude's first two points were: The pool pump is a large draw but has full time power to it (so no need to switch it on and off) and its speed is controlled by the RS-485 The SWG gets controlled by one relay and is 120v On my DIY Pool Automation sytem, I implemented the following: 1. Pool Pump - correct - the RS485 controls my pump speed but what would I do if the pump needs to be worked on? The pump controls, RS485 and voltage power connections, are very close to each other and the pump maker insists you turn off power to pump when opening it up. My voltage to pump goes through a circuit breaker then to the relay and then to the pump. In Florida, the heat is brutal so I shut down power to all relays each night to alleviate this issue. I also monitor the temperature in my PA box to alleviate frying my RPI. If it occurs, I, send myself an email. 2. SWG - correct - one relay. Most SWG devices comes either 120 or 240 capable. 240 volts uses less current so it is cheaper to run. I don't mean to be nitpicky but it just shows you the multiple wants/needs of DIYers. [/QUOTE]
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