bagpiperjosh
Well-Known Member
Just finished my e brewery panel and was testing everything out and i noticed when i used the estop, the 1 amp fast blow fuse i used as per a pj diagram blew. Is that normal or did i screw something up?
kpr121 said:Does the GFCI trip? Sounds odd, since most GFCIs are set to trip the circuit at 0.06 amps or something like that....
kpr121 said:Well that is a little better, but the GFCI shouldn’t let more than 1 amp escape the circuit through ground. Think if your body was that conveyance of electricity, you could die.
This question may sound stupid, but are you sure you have a 1 amp fuse and not a 1 mA (milli-amp) fuse?
Is there a resister in series with the fuse? You need one to limit the current.
bagpiperjosh said:no, that may be my problem, but every resistor is see has a tiny little wire on each end, seemed too small for 120v.. anyone have a diagram of how to wire that properly? or an actual pic... that would be better for me to understand
Without asking the same question, I was planning in soldering.
You should have hot-resistor-fuse-estop switch-ground. Any order works between hot and ground.
The fuse is redundant and potentially unsafe for a safety circuit IMO. You may have trouble with your GFCI breaker if it is tripping but still blowing a 1A fuse. The GFCI should trip long before you should be able to blow the fuse.
Go back and read this entire thread.I understand why the resistor is needed now, but why put the fuse and resistors in there for the e-stop in the first place? It seems sorta pointless
What ever you say.If you design the circuit to not fail, there will not be a problem. Resistors, sized properly are a fuse.
I'm building a panel now using a 5k / 5W resistor...costs about $0.50. That provides 24mA (120/5000) to trip the GFCI...Should be plenty.
Pushing the e-stop button will allow 24mA to flow and will dissipate 2.88W in the resistor. The resistor will not burn up, a fuse will not blow...the only possible failure is the GFCI is bad.
I really don't understand arguing this point. It's Ohms Law. I guess PJ would have a lot of diagrams to edit?
P-J said:What ever you say.
Enter your email address to join: