screwfix

  1. T

    My question about the lightning rod

    There is a lightning rod on the house. But is it safe to use? Lightning can cause damage to, for example, a tree, destroying it completely. It's not stupid to attract lightning to a house with a lightning rod. In addition, the power of the lightning is so great that it is unlikely to be...
  2. J

    What type of receptacle for 208/1 - 25.9 amps

    Hi, Sorry, lengthy post. Really only need to read the next sentence to be able to answer my question. The rest is what I have considered and how I developed the question. Can a NEMA 6-30 outlet rated for 250 volts be used for single phase 208 Volts? I am a relatively new estimater doing a...
  3. O

    I need my panel upgraded but not my wiring.

    I need my panel upgraded but not my wiring.
  4. T

    Wiring a 3 prong 220 plug

    I am wiring a 3 prong 220 plug in a feeder panel with 12/2 wire. Should I hook the ground wire to the ground bus or to the neutral bus? The neutral bus is isolated from the ground bus and the panel box.
  5. J

    Service disconnect triplex

    Hello I am trying to design an electrical service. I am a retired carpenter and trying to build a triplex for my retirement. I am hoping to get some help designing it, so I can get some pricing. This is being built in Nova Scotia, Canada. My understanding is that a service disconnect is...
  6. DMcKanic

    Drill press modification

    I bought a drill press that has a on/off toggle switch. If I replace it with a two-way toggle, will that allow it to operate in both directions?
  7. Skiplndn

    What is the age of fuse box.

    What is the age of General Fuse box No,723607 Class-CTL???
  8. M

    Need to upsize subpanel supply breaker

    I would like to ask advice on a breaker size. Back in 2001 I turned my garage into a woodworking shop with several 240v machines. To power them I put in a 100 amp subpanel supplied by an 80 foot run of 4 gauge romex (two hots, neutral and ground) from the main panel under the house to the...
  9. B

    What kind of cable to run 400 amp residential service 625 feet

    Hello Everyone, I am building a new home in Illinois and will be running 400 amp service from the street where the main ComEd electrical line is located to my house. Here is the problem, or at least what im worried about, the house is over 600' from the main ComEd line. My question is, what...
  10. fanito

    Simple question about converting 240v to 120v

    Hey guys, need some advice, please... this is probably a dumb question but hey, want to make sure.... I am going to replace an electric cooktop that is 240v to a gas cooktop that runs in 120v for the "minor" things. Anyway, since I don't need the 240 jbox (no proper outlet but it is under the...
  11. aworldturns

    Mainline Attachment Break Advice Please

    This is off the mainline above the weather head. On the end the wire got pulled out after a tree fall. Was this a fix from a previous wire rip? Can someone suggest how I could go about fixing this or should I just pay the electric company to fix it? Im thinking just buy a new adaptor and...
  12. S

    Calculaton questions

    I embarrassed that don't remember this but swallowing some pride is sometime good for a person. I am wiring a 3 phase in-line water heater and the manufacturer lists the current draw at 177A. at 480 volts, (144kw). Would that be per phase rating or would that be just the total. I was thinking...
  13. O

    Getting strange reading when I test a recepticle

    I have moved back to my house i was born in some 60+ years ago. Most of the original house's electrical receptacles are 2 prong with the center screw that holds the cover plate on as ground. They all test, OK. My parents had an addition installed on the second floor sometime around the mid to...
  14. F

    An unusual 3 wire cable voltage

    A 3 wire cable. Black, red, and white only. No ground. What does it mean when, black to white 0v, black to red 120v, red to white 120v? Thanks, Flatwall.
  15. J

    Adding 60amp breaker

    Hello, I’m going to be installing a wall charger soon in my garage that requires a 60amp breaker. I’m wondering if it is ok to add it to the garage sub panel (there are open spaces) or if I need to add it to the main panel. DIYer here. The plan is to run the breaker to a disconnect switch...
  16. Z

    What in the world is going on here...

    Was called to a complete previously scheduled work. Prior to arrival was called to say she was having electrical problems. This client has a large 40 year old home, with an 150a pushmatic main panel. No work has been done on the home recently. This is what I witnessed: Some circuits worked...
  17. M

    Which color leg (black or red) should be switched for a 240V rangetop?

    I have a 240V range top that needs a wall switch added (for preventing an elderly person from using it when unattended). The existing feed is one black, one red, one bare ground. Which color leg should I break with a switch? Thanks
  18. B

    Can I get help with the question

    Hey so I need help understanding this question and understanding it in the NEC.The service to a multistory building is 277/480-volt, 3-phase, 4-wire. There are 125 120-volt, duplex, general-purpose receptacles to be installed on each floor. A 3-phase, 480-volt primary, 120/208-volt secondary...
  19. B

    Cap off ground or common?

    I moved into a house where the owner left an air compressor. He started wiring it before he left, said it works but needs wiring finished. It has a 230 volt 15 amp motor which has 4 wires coming out of it 2- H, 1-com. and 1 ground going to a 3 wire plug which he has capped the com. From there...
  20. mikeysmith

    Garage buildout Question

    Hey all, I bought a big garage that I’m going to subdivide and rent out. I am going to hire an electrician to do all work. This is not a DIY question. I just wanted to ask for advice here before hiring an electrician, so I know what I’m getting into. Thanks in advance. The space is 2500 sqft...
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