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Lost partial electricity-- im stumped

hey dudes and dudettes,

During week 7 of flower, I enter "the room" to find 1 out 2 of my 1000w lights shut-off, my portable A/C off, and my exhaust fan off. All girls severely suffering from heat and a panic attack quickly overcoming me. I realize power is lost to one of the quad metal boxes.

I caught the problem in enough time to save my efforts, and finished the cycle (over the next few weeks).. just not with the intended 2000w.

Before the next flower cycle, the non-electric needs to be remedied.

When the room was being designed electricity was a major concern, therefore I had an electrician come out and set up what was needed.

It was a bitch! The goal was to get 40 amps to a third floor townhouse closet. The floors are concrete, so he couldn't route any wires through, and the position of the breaker (only breaker in the house, on first floor in tough spot) didn't allow for wall routing either. He used the line from the breaker that goes out to the air conditioning unit outside to route the wires up the side of the back of the townhome, drilled through concrete, and into the closet that way. The guy was brilliant.

He set up two quad metal boxes, one on top of the other.

Since there were no extra breaker slots available to dedicate the power, he replaced the houses A/C unit breaker with a breaker that had double the amps and ran the closet outlets off the newly replaced breaker. Therefore, the home A/C unit shares power with the 2 quad boxes upstairs.

That is the situation. To sum it all up, there is one quad not working (the top quad) but the other does, and the a/c unit for the home works just fine. So I assumed since the breaker clearly works the outlets may have died? I changed them and nada. I bought a volt checker.. no readings -- I may be ignorant on how to use it although I did read the directions and gave it my best.

What do I do? What other information do you need? What pictures do you need? When it comes to electricity I am simply at a loss.
 
G

Graham Purwatt

sounds like you may have burnt a connection in the box that isn't working or the line to it but i'm no electrician
 

Midnight

Member
Veteran
Find the last place in the circuit that you have voltage, your problem will be the next thing after that in the circuit.
 

Electrician

Active member
Find the last place in the circuit that you have voltage, your problem will be the next thing after that in the circuit.


Exactly. The problem usually is in the last thing on the circuit that still works. Sounds like a bad connection. All you need to do is get your meter and start checking voltage. Sounds pretty simple.
 
sounds like you may have burnt a connection in the box that isn't working or the line to it but i'm no electrician


Exactly. The problem usually is in the last thing on the circuit that still works. Sounds like a bad connection. All you need to do is get your meter and start checking voltage. Sounds pretty simple.

Thanks for the input. Thats what'll do, start checkin the connection.. you guys are lifesavers!
 

gardenbug

Member
So the a/c and room share a breaker? Not cool unless there is a sub panel somewhere, probably at the a/c that has a seperate breaker for the a/c and a seperate one for your room. Possibly seperate brakers for each outlet box. Hopefully the wire was upgraded as well and you aren't running the extra load on the old a/c power wire. If it was done right you may have tripped that breaker at the sub panel. If both of your outlet boxes are on the same breaker whether it's done right to a sub panel or wrong all on the one breaker, then you have a lose or burnt wire going to the outlet box.
Although it's been a week so hopefully you have it sorted out by now.
 

Buzzsmirk!

Active member
souunds liike u burnt one pole of your two pole breaker service up.
u prob gotz a bad breaker (two pole)
check that out too>
Buzz!
 

Stress_test

I'm always here when I'm not someplace else
Veteran
Well now all this advice and nobody asked if the breaker is 240v?

It most likely is, which would suggest that 1 leg isn't getting power from the breaker.

If that is the case then your AC unit probably isn't getting power to that leg of the 240 either. Which is where I would check first as it could burn out the AC unit.

The description you gave of the hassle in wiring gives me the idea that there are probably a couple of junction boxes in route from the main. If so then you may want to trip the breaker and remove the covers from any J-boxes and check connections there as well.
 
R

RedRain

i would call the sparky that setup your service,,this is obviously over your head
 

h.h.

Active member
Veteran
Sounds like a breaker. If your boxes are in series., your last box isn't getting enough amperage.
 

Mr Eckted

Member
Is there any voltage on the circuit in question? If you're getting strange voltages, you most likely have a broken neutral somewhere.

If there's none, a breaker in the malfunctioning box is probably at fault.

Since there were no extra breaker slots available to dedicate the power, he replaced the houses A/C unit breaker with a breaker that had double the amps and ran the closet outlets off the newly replaced breaker. Therefore, the home A/C unit shares power with the 2 quad boxes upstairs.

I hope you made sure that the cable running to the AC is rated to handle the extra heat that would result if your AC unit started pulling amperage up to the rating of the new breaker. If something were to short in the AC unit and the cable wasn't able to handle the increased amperage, you'd have a toaster oven in your walls in no time.
 

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