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disconnect

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  1. ddxact

    Hot Disconnect Switch

    Hi, I just wired a garage electric car charger (EVSE). The EVSE is configured for pulling 32 amp (240V) maximum, and directly connected. I am using 8-gauge copper THHN wires (2 with ground) run inside 3/4 EMT conduits about 30 feet, and then the rest with 8/2 romex in the basement for another...
  2. R

    Power connection of unknown source connected to outdoor light.

    Power connection of unknown source (prob socket spur) connected to outdoor light. Can i disconnect the existing light. Connect up RCD plug and then connect a switch to control a new outdoor light like pic
  3. D

    How do you disconnect neon lights in sockets while doing insulation resistance test.

    Hello everyone, I was just wondering how do you disconnect neon lights from socket outlets when doing insulation resistance test, as this will effect the readings, thanks.
  4. G

    Meter and Service Disconnect at Road - What Wires to use underground to connect main panel in house?

    I have 200amp connection, with the meter and service disconnect at the road (see pictures). House panel is about 75 feet from the service disconnect at the road. 1) Assuming I need 4/0-4/0-4/0-2/0 AL wire sizes (considered a sub panel), exactly what type of wires are required to run from the...
  5. F

    Run time disconnect

    I hope this is an appropriate forum to ask my question. I have an upflush toilet. The pump sometimes does not shut off automatically. I'm hoping to find a solution that will disconnect power if it draws power for more than 5 seconds and resets after a few minutes. Adjustable times would be a...
  6. R

    What type of AC disconnect switch is required?

    I'm preparing an electrical drawing to be submitted to my AWJ (Authority with Jurisdiction) which uses NEC 2014 and IRC 2018. (Important because NEC 2018 changed some requirements). My system is 36 panels producing 12.9kW Dc, and 2 Growatt 5000MTLP-US 5kW inverters, with integral Dc disconnects...
  7. A

    How to safely disconnect a noisy fan?

    Hi everyone, I’m looking to disconnect a noisy ceiling exhaust fan but I want to be able to reconnect it easily should I ever sell. I’ve attached a picture of the wiring from the roof to the fan. Can I simply cut the brown and black wires that are soldered on?
  8. D

    Testing Ze when you cannot disconnect the bonding?

    I was recently watching John Ward's video series on Electrical Installation Testing. In the part where he discusses measuring Ze, he states that you only test the earth connection to the cut-out and need to disconnect it from the bonding and the CU to do this correctly. In his example diagram he...
  9. H

    208V Single phase wiring from 3 phase 4 wire disconnect

    I work in a location that was once a Machine shop showroom. We have 208/230/480 etc in the building. I need to install a temperature chamber that requires single phase only 208V or 230V supply. I have a 100 amp rated disconnect literally in the exact location this needs to go. I've read for...
  10. E

    Insulation resistance check on LED fittings

    Hi, Do I need to disconnect LED fluorescent fittings when doing an insulation resistance check? Thanks
  11. P

    URGeNT wiring the disconnect to 3000 watt water heater

    Hi, I'm replacing oil water heater with 3000 watt electric. square d main panel. bi pole 20 amp breaker. 12/2 wire to a eaton dp221ngb 30 amp disconnect. I have 118v on both conductors going in disconnect but no power coming out. two 15amp glass type p fuses are in the disconnect. Why is there...
  12. G

    Temp pole 100-amp disconnect to original 100-amp main panel wiring.

    Good morning, I'm hoping that a crusty retired construction super is welcome here. I'm remodeling a cabin that has the old 2-wire electrical system panel, so all the neutrals and grounds are attached at the same ground strip and the cabin service drop is 2-wire URD. I already updated all the...
  13. S

    When connected to the fan voltage at connectors is 20v when disconnect from fan voltage is 220v. This down to the capacitor?

    When connected to the fan voltage at connectors is 20v when disconnect from fan voltage is 220v. This down to the capacitor?
  14. Vortigern

    SWA supply cables between buildings will not disconnect in required time

    Doing calcs on swa supply to building as sub main from main three phase squard D board for single phase supply off of TN-S supply. I used cable mate from jarsoft and looked up various tables for disconnection times. In all case scenarios it tells me it will not disconnect within the required...
  15. K

    Disconnect, grounding and mechanical protection requirements when bringing power to a chicken coop...

    Hi, I want to bring 2 x 20A (@120V) to a chicken coop. It will be powered from my garage panel which will require 140' of cable. 85' in the garage along 2 walls, and 55' buried between the garage and the coop. I used a few voltage drop calculators and it looks like I will need a 6/3 to stay...
  16. T

    I trying to add a breaker & my main panel doesn't have a Disconnect, How to I add it without getting electrocuted?

    Here is a pic of my panel. Thanks!
  17. S

    Breaking negative DC twice in disconnect

    Hello all, We have a 175 Kw 1500Vdc string inverter. It has 12 mppt channels with 2 inputs each. Each channel (you can have 1 or 2 strings per "chanel") has 1 DC contactor for the positive and 2 DC contactors for the negatives. Does anyone know the specific UL requirements for this and where to...
  18. O

    Do I need to disconnect leisure battery?

    Hi, I’ve installed a split charge relay in my 2003 Peugeot Boxer minibus. It’s being converted to a campervan and so now ready to install the rest of the electric system. I’m adding in a small 12v fuse box and wondered if I need to disconnect the leisure battery before starting to install the...
  19. littlespark

    Something else to disconnect before testing...

    First came double sockets with integrated USB outlet, now BG has a double socket with USB and a built in wifi repeater. I think i'll just stop using 500v dc across L & N completely. I'm now waiting for double socket with integrated toilet roll holder.
  20. Mr.Smith

    HEAT TRACE - What should be used as means of disconnect?

    Currently overseas and inside a small pumphouse heat trace is required. Wondering if I need double pole RCD protection for it? Thanks in advance.

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