screwfix

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  1. S

    6 20 outlet question

    20 Amp outlet (240v) appears to be connected to 30 amp breaker. Is this safe? Was hoping to use the outlet for an EV Charger. I am new to the house. thanks
  2. A

    please help me with my battery problem

    hello guys i have a (3-6v dc motor), (DC Motor PWM Speed Controller 3V 6V 12V 24V 35V), (3.7v 1200mah rechargeable battery) and a (Charging / discharging circuit MH-CD42 for batteries with 5V output). Everything looks to be working fine it spins and everything but when i put force on the motors...
  3. J

    Plugging 20 amp a/c into 50 amp outlet

    Mobile home outdoor power supply is a pedestal that power to the mobile home plugs in much like an RV. The main power supply into the mobile home plugs into a 50 amp outlet to the breaker box inside the trailer. The central a/c unit was an add on that was installed before I bought the trailer...
  4. K

    Conduit size for 200 foot run to sub panel

    I am adding a 60 AMP subpanel for a detached garage/workshop with a 200 foot underground conduit run from the main panel to the sub panel. Planning to use schedule 40 PVC. I have consulted with a local electrical inspector and determined that I should use 2 2 2 4 Aluminum THHN/THWN. However he...
  5. D

    BUSDUCT STATIC TESTING

    Commissioning a busduct. My contractor has installed a 2000amp aluminum Busduct in a 17 floor office tower. The specifications state you should undertake field quality tests on site, which are more stringent than the manufacturers' static tests, for the following: 1, Perform resistance...
  6. A

    How do I remove the conduits

    I have a switch box, I believed is from the 63 installed, that I want to remove but couldn’t because the conduit connection to the box looks like it’s press in. There is no nut. How would I go about removing it.
  7. finsends

    Insulation of electrical power pole

    Hello, I have a fairly big property and to get power to the house, there are several metal poles with the cables running along them. I had multiple issues with lightning strikes and suspect that the lightning hits one of the poles and reaches the house through that route. Additionally, the...
  8. finsends

    Sparks out of outlets during thunderstorm - Wiring mistake?

    Hello, I live in Costa Rica, which adopted the US electrical code. On a regular basis, during thunderstorms, I have parks coming out of the outlets and damaged devices, but no breaker ever flipped. I asked an electrician here and he told me everything is fine. I looked into the wiring and found...
  9. monolopcidy

    Is my ASUS Laptop fixable?

    My ASUS laptop has been sort of broken for a while, instead of replacing it we thought that it might be repairable? Its missing both hinges and that one bottom border on top of the screen, it turns on but the screen stays black and it charges normally. And the screen is connected to the keyboard...
  10. J

    220 connection for new wall oven.

    I am getting ready to install a new wall oven that's about 4 ft closer to the panel than the old stove. I have about 4 ft extra cable with the new wall oven location. For code do I need to install a metal box on the wall behind the new oven location or can I run the cable that's coming out of...
  11. J

    2013 Chrysler/Dodge TIPM

    Has anyone taken apart their & self repaired it? 2013 Dodge Grand Caravan SXT - Mileage: 112223 - DTCs - P0480 cooling fan. Also codes in TIPM P0691, P0692 for cooling fan control circuit. Tests/Procedures Performed: 1. Using a Autel MaxiDas D808 compatible scan tool, I actuated the cooling fan...
  12. E

    Hall Lighting with Architectural Dimmer

    I am looking at installation of an architectural dimmer, that is will supply 6 channels, with 20A circuits each (2400W ea). Our hall has can light fixtures. Roughly 50 lights are ceiling fixtures (uncertain if individually channeled, or wired in groups), and about 18 are track lights. About 24...
  13. G

    How to connect 50 amp inlet box to a Siemens 200 amp outdoor combination panel

    Trying to connect a 50 amp inlet box to my Siemens outdoor combination panel 200 amp cutoffs. Can’t figure out where to insert the 50 amp breaker since the 200 amp breakers appear to cover the whole panel. The panel has two 200 amp breakers, but want to connect it to just one of the panel...
  14. K

    Can you explain to breaker info to me?

    I am buying a house and it was built in 1949. Is there anyway I can tell if it has tube wiring without opening up the walls? Is there anything else I need to watch out for with a home built in 1949? Also can anyone explain these 2 photos to me? Does any of it explain if there is tube wiring?
  15. juanf8388

    Electrical service ampacity

    I need to calculate the service ampacity of a building. The wire is 250MCM (copper). 3 wires coming in. These wires provides power to 6 - 60amp panels. Anyone can help me to determine the service ampacity? What i know is the 250mcm wire can hold up to 290amps.
  16. I

    Electrical car hookup question

    I am thinking of getting an Electric vehicle. The only way for it to be realistic is to home charge. The problem, I have a fuse box no breakers. Do I have to upgrade my electrical box or can I add a 240V outlet as is? This is a 2 family home, the girl upstairs has a 240V to run her stove (I...
  17. Y

    MC against heating pipes?

    Noticed an old cloth wire coming down the brick wall feeding an outlet on the opposite side of our oil burner is all fray. Was going to replace it with MC but the plumber that was here doing work (why I was back there to take notice of it) mentioned there is some new local rule that they aren't...
  18. P

    Working on a fan, what is this part

    I got my hands on an old floor standing fan and started looking to rewire it. I found this part, I think it's a resistor, but was hoping someone could confirm for me, and maybe suggest a replacement, this thing is kind of crusty, looks like it was covered with layers of something in the past...
  19. W

    220v attic conduit question

    Hello all, new here. In the near furture i want to install an electric tankless water heater. I would do gas but i only have electric in my home after moving. I will be hiring an electrician to do the wiring. Its only 30 feet from electrical box to water heater location and i will need a double...
  20. D

    Ground bar neutral bar connection

    I have breaker box at least 40 yrs old, both conduit and romex enter box, only one neutral bar that all white wires and bare ground wires attach to, bar has bond screw to box. Most everything I read and pictures on internet seem to contradict. Nowdays box must have separate neutral and ground...

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