Questions tagged [power-supply]

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Can I wire a 220v 15amp outlet in the US?

In Brazil I have visited a number of cities where every house is wired with 220v. This is a FULL 220v between the Live and the Neutral, plus the Ground wire. Very different from the 220 in the US ...
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1 vote
1 answer
110 views

What can cause all LED bulbs / fixtures to rapidly flicker at the same rate?

Since last week, every LED bulb and fixture in my household is flickering at a similar rate. Incandescent and CFL are not affected. Here's what I've had done to try and diagnose the issue: Fuse panel ...
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6 votes
3 answers
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Can a power transformer cause building vibration

For six weeks something that runs when it's cold outside has caused shaking of the floors. There is a transformer for the powerlines at the back of the property. Neighbors to right and left don't ...
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2 votes
0 answers
107 views

Why do we lose power when it is slightly cool in a hot region?

I spend part of the winter in a condo in Quintana Roo, Mexico, which is a subtropical area, with normal daytime high temperatures in the upper twenties to low thirties celsius, and nighttime ...
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4 answers
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Help for electric dryer power issues

I have a 30 Amp circuit breaker for my dryer. The receptacle (outlet) is a 50 Amp outlet (it was in the house when I got it). I have a 50 Amp cord connected to a 30 Amp dryer. My only concern is if ...
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2 answers
138 views

Connecting 1 phase power generator to 3-phase home power circuit

I am looking to hook up my power generator to my house in case city power goes out. I have 3 phase power supply from the city and 1 phase generator. I have connected my generator using rotary switch (...
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-1 votes
2 answers
109 views

Can i use 1/0 THHN/THWN-2 Building Wire

Would this be ok to use from the house to a outdoor garage for the main power line? House has 200 fuse box. Shop will have the same but just your standard plus stuff being used with lights etc
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3 votes
8 answers
1k views

How to detect power cut remotely? [closed]

I need to know if there is a power cut in a building. I have to detect this remotely, because I am usually not present at the building. I need to detect the power outage in less than 24 hours to save ...
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  • 139
2 votes
1 answer
265 views

Why does my Uninterruptible Power Supply produce lower watts on backup battery than line power for my pellet stove?

SOLVED Problem: When my UPS does the switch-over from line power loss, the pellet stove runs but you can hear the stove motors slow down, and the wattage meter on the UPS drops from ~150w nominal to ~...
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1 answer
155 views

Reverse surge protection

This is somewhat related to the question I found here: Will a spike protector work in reverse? I have a trusty old 3D printer running on the same power strip as my two computers including a screen. ...
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2 answers
111 views

Does Electrical Outlet always run current even without anything plugged in? [closed]

In a situation where there is no device plugged in a normal house electrical outlet, does it still run an electric current, if so then how large? I would assume there is no electric current in this ...
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3 answers
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Will an electric shower fry my PC?

In Brazil, showers are all electric. Mine pulls up to 5000W/50A at 120V (actually, 120Vx50A=6000w, but that's how they rated it). We installed it last week and I told the electrician to make it's ...
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1 vote
0 answers
68 views

Partial power out when AC is on

Anytime our AC is on we lose power in a few rooms mostly the kitchen. It can be on a few days before it goes out. I’ve had 2 electricians come they both said electric panel looks great , we did ...
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2 answers
35 views

LED lighting fixture driver busted - what can I replace it with?

A LED lighting fixture in my apartment (in Israel/Palestine) started flickering for a while before coming on, then went bust. I suspect it's the driver/power supply rather than the LEDs themselves, ...
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-1 votes
2 answers
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how wire a 24 vac normally closed float switch to a relay to turn power on and off to a 120 vac clothes washer

Hi: In over my head just by being here so thanks in advance for your patience and help. My goal is use a 24 vac float switch (which sets in an overflow pan) to interrupt a 120 vac circuit that runs a ...
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-1 votes
3 answers
39 views

Tekmar 532 gives error code about voltage too low. Hooked up to 24v powersupply, fluke multi-meter reads 24.18v across wire

I have a tekmar 532 which I have hooked up to a Signcomplex 24V 2A 48W Power Supply Adapter Transformers 24VDC LED Driver Switching Power Supply for LED Strip Light AC/DC Power Adaptor, UL Listed. ...
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2 answers
109 views

I have seven 24v 2amp thermostats. Do I just need a single 24v 2amp power supply to power them?

I have seven 24v 2amp thermostats. The thermostat wires all feed to the same place. Do I just need a single 24v 2amp power supply to power them? The thermostats are Tekmar 532. They will connect to a ...
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