grounding

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  1. F

    Grounding a DIY aquarium light

    I made a DIY light fixture by putting some cut-to-size LED strips in an aluminum housing connecting them to a Mean Well DC power supply with a 3-prong plug. It's supposed to hang over a planted aquarium. My problem is that I feel a tingling sensation when I touch the housing. My understanding...
  2. JanaWick

    How to calculate the effect of ground Enhansing material (GEM) in Earthing

    Can anyone advice me on how to take in the effect of Ground Enhansing Material (GEM) used in Electrical Earthing to reduse the earth resistance? in all the suppliers specification they only mension the GEM reduse the soil resistance drastically? so should i consider 1/5th,ro 1/10th or 1/100th...
  3. P

    Grounding rod location(s) relative to panel

    Short version: does code specify a minimum distance from the panel to the first grounding rod, and if so, what is that distance? Long version: Our house (built in the late 1950's) has an electrical system which is grounded to the water system. There is a grounding cable that runs straight...
  4. eletric

    Grounding Rod Resistance

    Now I understand why so many people in US have stories of computers blowing up during thunder storms. This is a pretty dumb rule for ground electrodes: If the resistance is over 25 ohms for an electrode, the code requires that an additional electrode be installed at least 6 feet (1829 mm) away...
  5. N

    Confused about my floors being grounded

    I am a complete novice when it comes to electrics but I have recently bought a grounding mat and so I've been doing some measurements and I'm totally confused by something. Upstairs I get a reading from my body of 5 (ish) volts (bare foot). When I touch the earthing mat this goes down to 0.2...
  6. B

    Seeking advice for proper grounding

    Hi, Our house is 150m away from the street. We installed a 600V step-up/down system to bring electricity to it in order to avoid excessive losses and very large cables. The 240V/600V 50KVA transformers are rated NEMA-3R enclosures, located one 10ft above ground and the second one 5ft above...
  7. L

    DIY New Solar - Grounding Question

    Good Afternoon All, So I have a new situation to me that I cannot seem to get a definitive answer for. I trained as an electrician and did several years as an apprentice many years ago now and have since maintained those skills through maintenance of my own home. I have no issues doing really...
  8. C

    20kVA single phase generator grounding question

    How should grounding be made to a 20kVA single phase generator set feeding a domestic property via a manual change over switch? At the generator's alternator neutral is bonded to earth. The generator will be some sixty feet from the mains input box of the property fed by SWA cable. The...
  9. W

    Checking proper bonding and grounding for office trailer w/generator power

    Hey guys and gals. We bought a small office trailer that is wired up. It's never seen mains power and uses a generator disconnect (220). I read up on the myriad of code situations for bonding and then grounding, neutral switching etc. and came to the conclusion this would fall under separately...
  10. B

    Expanding off self grounding outlet

    Hi - I'm trying to add an additional outlet to a circuit in my house. I tested the outlet with a tester, and it showed as correct. The existing outlet is facing the finished part of the basement, but where I am looking to add an outlet is in the unfinished utility room behind the wall. I have...
  11. Mdterpsfan

    Main panel and sub panel grounding.

    Brian, DIY but 30-year commercial/industrial master HVAC tech. I have installed an emergency whole-house breaker switch next to my service meter. This will now be the main panel and I have subsequently tied my two grounds from grounding rods into the new panel. The the original main panel...
  12. Mike57

    Grounding and bonding swimming pool pump

    Need some help please. Got a brain teaser for my first post. My pool pump motor cratered over 4th of July. It was working fine and started to sound like it had gravel in it. I turned it off at the timer to backwash and the breaker tripped. She was locked up. Since it was 8 years old I took it to...
    • Mike57
    • Thread
    • bonding grounding pool pool pump pump swimming
    • Replies: 13
    • Forum: USA
  13. DonJohnson

    Grounding light switch

    I am in the process of swapping light switches and currently there is no ground wire connected to old switch. It looks like there may be bare ground wire pushed to very back of box. Is it likely connected to anything? Is there another way to add a ground for new switch? Thanks
  14. A

    Code Question - Grounding MC Cable and Metal Junction Boxes - Garage Addition

    Hey, question for the group on grounding when using MC cable and metal boxes.... Situation: Enclosed a carport and turned it into a garage. I'm branching off of an existing bedroom outlet circuit to add 1 outlet and 7 LED light fixtures in the garage area (1 exterior, 6 interior LED puck...
    • Aaron-DIY
    • Thread
    • addition boxes cable code garage ground grounding junction mc cable metal question screwfix
    • Replies: 1
    • Forum: UK Electrical Forum
  15. N

    Older home with no grounding system and pool pump

    Installing a small above ground pool with a 1/2HP 120v pool pump. The house is older and has no grounding system that I can tell. Outlets are two prong. I know I need a gfci outlet to plug pump into but will this be safe and work as intended with no grounding system and only a hot and neutral...
  16. E

    Rebar bonding for insulated monolithic cement slab

    Hello! I am in the planning stages of a new dwelling construction. The foundation will be a monolithic cement pad with rebar. Based on my research, I am fairly certain that I need to ground the rebar within the slab. The slab will have rigid insulation under it and will have a vapor barrier...
  17. K

    Grounding Wire In Concession Trailer

    I bought a concession trailer that was all propane. Being the town I'm in is so strict about propane, l gutted it out and now making it all electric. Running on 2 generators. So my question is about wiring. The interior is all stainless steel. I have mounted all metal conduit to the walls. I am...
  18. _q12x_

    A Facebook question about Earthing and Grounding

    I find this question on Facebook: And I give it my answer already and I will post my answer that I already made for it. But I am curious what you guys will say first, without me influencing you with my answer. I am an artist, I am not an electrician or electronist. My relation with...
  19. P

    Sub panel grounding in a pool shed

    I have a Ge 125 amp 12/24 load center being installed in my pool shed roughly 80 ft away from the main electrical panel on the house. The plan is to backfeed the panel with a 100 amp breaker to function as a service disconnect. I will be running a 20 amp circuit from this sub panel to a garage...
  20. S

    Grounding resistence

    Am I missing something? I ve been fighting this battle for years. A customer keeps telling me I have to measure resistance to ground in the panel(main ground conductor), I say for consistency I need a proceedure, they come back with use the clamp meter, hanging the clamp on the ground wire. My...

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