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  1. Thread: BX Connector

    by fifty60
    Replies
    9$$
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    284

    I am trying to comply with a standard (IEC-61010)...

    I am trying to comply with a standard (IEC-61010) and it states:

    "A compression bushing shall not be used as a cord anchorage unless it is suitable for use with the MAINS supply cord supplied...
  2. Thread: BX Connector

    by fifty60
    Replies
    9$$
    Views
    284

    BX Connector

    Are BX connectors considered compression bushings?
  3. Replies
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    415

    I am getting the 50mm^2 from the attached chart. ...

    I am getting the 50mm^2 from the attached chart. This is giving me the cross sectional area (47mm^2), which is much different than the 171.6mm^2 given in table 5. Anyone know why this is?
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    This is what is confusing me. I have 4...

    This is what is confusing me. I have 4 conductors that are each 50mm^2. I times this by 4 and get 200mm^2. I refer to table 4 in chapter 9 and see that for over 2 wires, 40 % fill, 1 1/4 conduit...
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    Sizing Conduit---Metric

    I normally have four #1AWG THHW conductors that I run through 1 1/4" EMT. I would like to size this to the equivalent metric. The closest standard metric size to #1AWG is 50mm^2. Four 50mm^2 wires...
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    I have an intrinsically safe RH...

    I have an intrinsically safe RH transmitter/sensor. The transmitter will be installed in the unclassified location and the RH sensor will be installed in the Class I Div II location. It would not...
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    Would the resistance method work for measuring...

    Would the resistance method work for measuring transformer winding temperature? The transformer is a small 1KVA industrial control transformer. Can I use a standard issue fluke multimeter?
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    Derating Transformers

    I have a transformer that is rated for an ambient of 40 C. My ambient is getting to about 46 C. I am not using the full capacity of the transformer. Since I am not operating the transformer at...
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    The Appleton cable gland strain relief that I...

    The Appleton cable gland strain relief that I have accepts cables with an outside diameter of up to .75 inches. .75 inches converts over to 19.05mm. All of the 4 core steel wire armoured cable that...
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    I like that idea as well. I am trying to...

    I like that idea as well. I am trying to understand why the size 20 gland is recommended for the 3 + 1 6mm^2 cable. From all of the charts that I can find the size 20 gland would be too small. I...
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    According to this page...

    According to this page http://www.superimpex.com/cable_glands/technical_data.htm
    I will need a size 20 gland to fit a 3+1 6mm^2 cable. It also indicates that a 1/2 inch entry thread located on the...
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    It is difficult to provide a cable gland when you...

    It is difficult to provide a cable gland when you do not know exactly what cable will be used. I believe the 4 conductor 6mm^2 cable will be used. I am hoping that it is not 20mm in outside...
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    SOOW means that the conductors as well as the...

    SOOW means that the conductors as well as the jacket are oil resistant and water resistant. SOOW is a little more robust and tuff than plain SO cable.

    I am trying to size an opening in my...
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    10/4 SOOW--European Equivalent

    Can someone please recommend what type and size of cable would be used in place of 10/4 SOOW cable in the European Union?
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    Equipment Ventilation

    Can anyone recommend any good books/websites that discuss equipment ventilation? I want to understand how the hot air is flowing around my sub panel area, and what techniques I should employ when...
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    So the motor is actually a TEAO motor, so the...

    So the motor is actually a TEAO motor, so the very top of the transformer is a fan. So it might create a mechanical hazard, but not electrical. Are the ambient on these types of motors as strict as...
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    Open Air Cooled Motor Protection

    I have a small fraction open air cooled motor with Nema Class B insulation. Kind of a silly question, but what would happen if I put a 4 inch test pin gently into the vented portion of the top of...
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    10403 Using this chart, and a class B...

    10403

    Using this chart, and a class B insulation, would I just add 15 degrees to the class B curve to get my motor insulation lifespan? If I am at 20,000 hours at 130 C, at an ambient of 55 C, I...
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    Would the ambient temperature be the temperature...

    Would the ambient temperature be the temperature the motor would settle to if it were shut off? If so, this would indicate that you have to get out of the "near field" temperature of the motor, so...
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    Nema Insulation Classes

    Are all Nema classes based off of a 40 C ambient? I have a class B motor that is operating at 52.5 C, it has not tripped its thermal overload. I am not sure what the service factor is for the...
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    Wouldn't the heat in this situation always be...

    Wouldn't the heat in this situation always be conduction or convection? Conduction through directly connected parts and convection from the interaction between the heated parts and the air in the...
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    The motor is not drawing more than the rated...

    The motor is not drawing more than the rated amps. The heat is coming from the top of the oven. I need something to insulate the motor housing and enclosure from the heat coming through the top of...
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    Thermal protection on Air Circ Motor

    I have a .17HP single phase motor that I am trying to run at 115V 50hz. This motor is rated for 115V 50/60Hz. I do not completely understand why I do not have to derate the voltage at 50Hz instead...
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    Bonding Conductor Size

    Should use 250.122 to size the bonding conductors for removable panels on my equipment? I know the equipment grounding conductor is sized to this, but should removable panels bonding conductors...
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    would Fluorinated ethylene propylene meet this...

    would Fluorinated ethylene propylene meet this description? I also have a metallic Fluoropolymer insulation available.
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