Im trying to make a Star Wars Prop for a course project where the dealine is comming up very fast in days and I need to do the report so really urgent
On the prop whihc is a portable control box Dual control box (Left side control panel, a tower in the middle and a right side control panel
On...
I've managed to mainly fix a Megger 1502 MFT that was so far out of calibration it got laughed out of a tester day.
I have high current loop. rcd test currents, and low resistance within spec now. (I can share more info about this process separately if anyone's interested, it's been an...
Existing situation: 3150kVA transformer, 11kV/450V no load losses 6300W.
Existing premagnetizing resistors with power losses 322kW for 5s.
Due to increase in power demand, a new transformer has to be installed: 11kV/470V no load losses 8500W.
Would the above mentioned resistors be enough?
And...
Im not massively experienced in fire alarms... But can you use one end of line resistor on a different brand of circuit? Currently we're using a kentech board and only have esp resistors to hand? Can I use those. I presume they are no different to any other brand.
After calibration of my loop tester,I am considering using a socket in the house for future calibration checks and to connect various low resistances in series with earth via a rotary switch to give a range of readings,and if so what value of resistors?Thanks for any advice...
Evening all, I think I am being thick but I cant fathom out how to wire activ8 sensors into the g2, I will admit I have never wired one, have been fitting accentas since forever but I cant find an idiots wiring diagram for the panels, I downloaded the 137 page manual and I have the activ8...
There are always quite a few threads where the problem is the LED staying on slightly even when switched off and I see that the solution is to fit certain resistors as a snubber.
I have never had this problem. I guess I have either been lucky or have found a combination of switches/lamps that...
Hi I know something similar has been posted before, but can't find it.
I have fitted a varilight eclique dimmer with a chandelier that has gu10 dimmable megaman leds. When the switch is turned off the led's continue to glow.
Am I right in thinking the problem is that induced voltage from the...
First off, I want to say that I'm not an electrician and don't know much about electricity.
My question... Is it ok to have two resistors connected to a 3mm led? Please don't ask why two resistors.
I just want to know if it would harm the led or have any kind of negative effect on the circuit...
Me again folks
After Sintra helping me out yesterday i've stumbled across another problem.
I've attached the problem if anyone can help or guide me in the right direction i'll know how to work these out in the future.
Thanks in advance folks.
Mark
Hi All first post.
I'm currently doing a Pre Entry in Electrical Engineering and really enjoying it so far.
My question is i'm finding the Resistors in Parallel a bit tricky see below.
The question asks me to determine the values of V,I2,I3 and R
Suppose i'm more confused in whats best to...
Markrobert30
Thread
across
current
first
parallel
really
resistors
through
Can someone just please clarify I have the correct understanding here. With a series circuit with two resistors in it the voltage from the source is dropped equally over the loads and reduced to mV on the outgoing side. Now if you tap into it before it hits those resistors you have created a...
Hello guys,
Just installed 2 bathroom spotlights along with an extract fan, the feed is at the switch and from there to an isolator and obviously fan and lights. However when the fan is turned on the lights flicker, I've been reading previous threads about putting resistors across the switched...
I'm having no end of issues with a current install.
What I've got is two 3gang dimmer switches from Lightwave RF.
Gang 1 - Auraled 240v 5w Warm White LED Dimmable Lamp x4
Gang 2 - Auraled 240v 5w Warm White LED Dimmable Lamp x6
Gang 3 - Auraled 240v 5w Warm White LED Dimmable Lamp x2
Gang 4 -...
Hi, short off it is my sister has bought a texecom wired alarm and wants me to fit it and to be honest I did a course about a year and a half ago on alarm installation but since then cause I was an electrician in the army and for past year been doing domestic electrician with elecsa, I haven't...
hutch6447
Thread
access
alarm
panel
premier
resistors
tamper
texecom
Got a job on at the moment to disconnect part of a building, and need some EOL resistors
Ones im after are a 6K8 and a 470R, im hoping maplins can help but does anyone know what the rating these would be as maplins only state the Ohms value
Thanks in advance
Installed led spotlight on landing controlled by 2 way switch. When switched off it continues to glow. Presumably this is an induced voltage in the strapper. Is there any cure or even any need to cure it?
Been doing some electronics experiments with the students. Fairly easy stuff, but i have to admit the last time i did this stuff was when i was where they are now, and that is more years ago then i will admit. Anyway, we have soldered some resistors in series and parallel, added capacitors and...
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