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Old 08-16-2012, 09:28 PM   #1
Jeepinfool86
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May 2012
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I'm planning on following this diagram you posted. The thread I got this diagram from also had a order list. On the parts list there switchs but no contactors. Are contactors needed?
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Old 08-16-2012, 10:42 PM   #2
jeffmeh
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If the switches are rated for sufficient amperage, then no contactors are necessary. The contactors are used to allow for switches at lower ratings.

 
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Old 08-16-2012, 11:08 PM   #3
P-J
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That particular diagram was drawn for a 30A 240V feed. The element switch can handle the current (23A) that the element draws.

As jeffmeh said, if you choose a switch of low current carrying capability, then a contactor is required.

 
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Old 08-17-2012, 02:09 AM   #4
Jeepinfool86
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May 2012
Saint George, Utah
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I also noticed that the fuses say 1 amp. Is that correct? If not what size should they be? 30A?

 
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Old 08-17-2012, 02:19 AM   #5
P-J
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Quote:
Originally Posted by Jeepinfool86 View Post
I also noticed that the fuses say 1 amp. Is that correct? If not what size should they be? 30A?
I placed te 1A fuses so that you can use smaller wire to set up the circuits involved. Re: the E-Stop circuit - That fuse is placed so that any wiring error would prevent a problem. If the circuit is accurately wired the fuse is not needed. I was trying my best to provide a diagram that would be of use to everyone.

JMHO.
P-J

 
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