Electrician here

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guitarguy10

Well-Known Member
Well I just asked in another 'expert electrician' thread, so perhaps you can help, i'll just copy/paste ...

I am waiting on some HLG QB120 boards (70W each) and a user here @ilovereggae is helping me out with some drivers, wagos, etc. etc. (very much appreciated btw). I will be wiring 2 boards in parralel on one driver (Delta LNE-24V120WDAA) with a potentiometer.

The only thing I have left is the wire to use on the DC side. I have tonnes of 22 gauge wire that I use with my arduino and rasp. pi microcontrollers. Would this wire be sufficient/safe enough to carry the load this setup will produce?

The only source of information I could find on the National Electric Code on maximum rated amperage for a given wire gauge only goes as 'low' as 14 gauge wire, it doesn't show the max amperage for anything above (thinner) then 14 gauge:

wiresizecalculator.net
 
osowhom

osowhom

Well-Known Member
guitarguy10 said:
Well I just asked in another 'expert electrician' thread, so perhaps you can help, i'll just copy/paste ...

I am waiting on some HLG QB120 boards (70W each) and a user here @ilovereggae is helping me out with some drivers, wagos, etc. etc. (very much appreciated btw). I will be wiring 2 boards in parralel on one driver (Delta LNE-24V120WDAA) with a potentiometer.

The only thing I have left is the wire to use on the DC side. I have tonnes of 22 gauge wire that I use with my arduino and rasp. pi microcontrollers. Would this wire be sufficient/safe enough to carry the load this setup will produce?

The only source of information I could find on the National Electric Code on maximum rated amperage for a given wire gauge only goes as 'low' as 14 gauge wire, it doesn't show the max amperage for anything above (thinner) then 14 gauge:

wiresizecalculator.net
Click to expand...
if you must use it and you have a bunch of it my suggestion would be to double or even better triple it up to be safe and make sure your connections are tight be careful when stripping it bach not to knick the wire try a test run and turn on the light the wire shouldnt get warm at all but if it was me i would buy some 14 and do it right 22 is only good for 3 amps max
 
dbz

dbz

Well-Known Member
When using higher amperage solid state relays eg: 20-30 amp relays is a heatsink necessary?

In this case I am using 2 30 amp relays in a box controlled by an arduino that will turn on and off the AC. Really I probably just need 15 amp relays, but they were hard to find in solid state (the AC and heater will probably cut on a lot so I wanted to avoid mechanical for longevity).
 
osowhom

osowhom

Well-Known Member
dbz said:
When using higher amperage solid state relays eg: 20-30 amp relays is a heatsink necessary?

In this case I am using 2 30 amp relays in a box controlled by an arduino that will turn on and off the AC. Really I probably just need 15 amp relays, but they were hard to find in solid state (the AC and heater will probably cut on a lot so I wanted to avoid mechanical for longevity).
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it depends on where they are going to be if they are enclosed in a small box in a warm enviroment then yes i would but you have the right idea about mechanical ones they will fail faster in my opinion
 
Renfro

Renfro

Well-Known Member
osowhom said:
I can answer most questions about electrical problems and such i am a commercial/residential sparkyView attachment 4788198
Click to expand...
Good to have another fellow sparky on board, I'm pretty rusty as I have focused on growing weed for the last 20 years. We have a thread that you should get into since it's become the go to thread for electrical advice.

Experienced Electrician! Here to Answer Any and All Growroom Electrical Questions

Hi there fellow RIU'ers... Over and over again I continualy see new threads and posts about electrical work question and thought I would post a couple threads to help you guys the same way all of you who have done such a great job having helped me... So, Do you have a grow room question about...
www.rollitup.org
 
dbz

dbz

Well-Known Member
Mrgoodsusa said:
Hi. I want to build 3 plc lights and I’m gonna have more stuff like dehumidifier fans and things like that. How do I know if my apartment can take all this load
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Get the wattage draw of each appliance..wattage x volts = amp draw.
Then see what breakers are on the circuits you want to use and how many amps they are.
Add up the appliances amp draw you want to put on each circuit and dont exceed 80 percent of amps that the breaker is for each circuit.
 
osowhom

osowhom

Well-Known Member
spliffendz said:
I take it no one has put a +and - to a spidermite to see how many volts make it explode, or is it the amps
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well if i ever get them again i will try it but i hope that day doesnt come every watering i spray neem oil and insect soap at the base of my plant then pluck several leaves from each plant and check them under a scope homey aint playing that game again
 
1

1212ham

Well-Known Member
dbz said:
Get the wattage draw of each appliance..wattage x volts = amp draw.
Then see what breakers are on the circuits you want to use and how many amps they are.
Add up the appliances amp draw you want to put on each circuit and dont exceed 80 percent of amps that the breaker is for each circuit.
Click to expand...
Nope, wattage/volts = amp draw. Volts x amps = watts. I won't complicate it with power factor. ;-)
 
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