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seaflo · 03-13-2009, 06:53 AM

Calculate the amperage used by each fixture; then check the electrical circuit they are on and determine what amperage breaker it is. My rule of thumb is that the usage should not be greater than 75% of the rating of the circuit; i.e. if you have a 30 amp breaker, you should not be using more than 22.5 amps. Of course you have to determine what the wiring type is too. My calcs are for copper wiring. If your house has aluminum, God forbid, a 50% rule should apply and you should consider rewiring your house with copper. An overloaded circuit is a recipe for disaster. Please bear in mind I am not an electrician/electrical engineer just someone that has been there and done that a few times. Good luck.

03-13-2009, 06:53 AM	#2 (permalink)
seaflo Old School Join Date: May 2005 Posts: 191 Thanks: 100 Thanked 60 Times in 40 Posts	Calculate the amperage used by each fixture; then check the electrical circuit they are on and determine what amperage breaker it is. My rule of thumb is that the usage should not be greater than 75% of the rating of the circuit; i.e. if you have a 30 amp breaker, you should not be using more than 22.5 amps. Of course you have to determine what the wiring type is too. My calcs are for copper wiring. If your house has aluminum, God forbid, a 50% rule should apply and you should consider rewiring your house with copper. An overloaded circuit is a recipe for disaster. Please bear in mind I am not an electrician/electrical engineer just someone that has been there and done that a few times. Good luck. __________________ FREE AMERICA FROM INTOLERANCE.