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Old 12-06-2010, 11:46 AM   #1
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Wiring 240volt Baseboard Heater


Hello,
I have 3 phase electric.
I hooked up a 240 volt baseboard heater to the two low sides. 110+110
My question is, can I hook it up to one low side and one high side?
Thanks!

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Old 12-06-2010, 11:57 AM   #2
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Wiring 240volt Baseboard Heater


Do you have a high leg delta or a wye 3 phase?

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Old 12-06-2010, 12:11 PM   #3
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Wiring 240volt Baseboard Heater


Not sure.....Every third leg is 240 volt
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Old 12-06-2010, 12:32 PM   #4
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Wiring 240volt Baseboard Heater


After looking at the transformers I believe it's Delta
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Old 12-06-2010, 08:57 PM   #5
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Wiring 240volt Baseboard Heater


If this is your home then more likey you have 4 wire delta system and there is one gotcha is wild leg from phase B to netural it will show up 208 volts so try to advoid it if you have line to netural load.

For your straight 240 volt electric heater it will not be a issue it will work on any phase { A-B or B-C or C-A }

but only gotcha is that if you use on AB or BC you will need straight 240 volt rated breakers { the AC is not a issue due you will have legit netural there }

And all the 240 volt load will need two pole breakers you can NOT use single pole breaker on this set up.

However if this is in commercal building then all bet is off !

Merci.
Marc
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